Diesel Engine Manual

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OWNER’S MANUAL
AIR-COOLED DIESEL ENGINE
170F / FE / FS / FSE
178F / FE / FS / FSE
186F / FE / FS / FSE

PREFACE
Thank you for purchasing products from Eastern Tool & Equipment, INC. The following
manual is only a guide to assist you and is not a complete or comprehensive manual of all
aspects of maintaining and repairing your engine. The engine you have purchased is a complex
piece of machinery. We recommend that that you consult with a dealer if you have doubts or
concerns as to your experience or ability to properly maintain or repair your engine. You will
save time and the inconvenience of having to go back to the store if you choose to write or call
us concerning missing parts, service questions, operating advice, and/or assembly questions.
Engine Features and Highlights
 Direct fuel injected intake system
 Recoil-type manual starter and or optional electric starter system
 Forced air convection cooling system
 Composite steel fan cover for minimum noise levels
Our four stroke diesel engines are air cooled with a direct fuel injected intake system. They offer
maximum efficiency through the minimal conservation of energy and materials. These diesel
engines are compact and lightweight. They are easily maintained and portable making it
convenient to move. They are widely used as a source of mechanical power for industrial,
agricultural, and machinery equipment. Some applications include irrigation equipment, diesel
powered pressure sprayers, grass-cutting machines, and soil-sampling machines. Other
applications include vibration rammers, shock rammers, marine engines, lightweight transport
vehicles, portable compressors, and lightweight portable generators.
This operating manual will explain how to operate and maintain your series of engines. Please
read it before running the engine for correct operation.
To ensure long engine life please follow the operating requirements listed in this manual.
If you have any questions or suggestions about this manual, please contact your local dealer or
us. Consumers should notice that this manual might differ slightly from the actual product as
more improvements are made to our products. Some of the pictures in this manual may differ
slightly from the actual product as well. Eastern Tools and Equipment, Inc. reserves the right
to make changes at any time without notice and without incurring any obligation.

TABLE OF CONTENTS
Page number
Safety Precautions
Chapter 1 Technical Specifications and Data
1-1 Technical Specifications
1-2 Overall Dimensions and Installation Conditions
1-2.1 Belt wheel and engine clearance requirements
1-2.2 Crankshaft driving angle conditions
1-2.3 Engine electrical system
1-3 Diesel engine shaft specifications
1-4 Diesel engine part names
1-5 Valve timing, initial angle of fuel delivery and valve clearances
1-5.2 Initial angle of fuel delivery
1-5.3 Valve clearances
1-6 Temperature ranges for exhaust and injection pressure specifications
1-7 Various engine torque specifications
Chapter 2 Diesel Engine Operation Procedures
2-1 Engine safety precautions
2-2 Fuel choices
2-3 Starting the diesel engine
2-3.1 Recoil Starting
2-3.2 Electric starter
2-3.3 Cold starting
2-4 Running and stopping the diesel engine
2-4.1 Running the diesel engine
2-4.2 Routine checks while engine is running
2-4.3 Stopping the engine
Chapter 3 Technical Maintenance of Diesel Engine
3-1 Daily checks and maintenance
3-2 Regularly checks and maintenance
3-3 Storing the engine for long periods of time
Chapter 4 Part Listings
4-1 Engine block
4-2 Cylinder head assembly
4-3 Piston connecting rod and crankshaft balancing mechanism
4-4 Fuel system parts
4-5 Oil and speed control system
4-6 Cooling and recoil starting system
4-7 Air cleaner and silencer system
Chapter 5 Engine Troubleshooting
5-1 Engine is not starting
5-2 Diesel engine lacks power
5-3 Engine stops automatically
5-4 Engine exhaust very black
5-5 Engine exhaust very blue
5-6 Engine exhaust white
5-7 Various methods of checking to see if engine is malfunctioning
Limited Warranty
Registration Card
Comment Card

4
7
7
9
10
11
11
12
13
14
14
14
14
15
16
16
16
19
19
21
21
23
23
23
23
25
25
25
27
29
30
33
36
39
41
44
47
50
50
51
51
51
51
52
52
53
55
55

SAFETY PRECAUTIONS
Please be sure to follow each instruction carefully
EXHAUST PRECAUTIONS





Never inhale the exhaust gases, it contains
carbon monoxide, a colorless, odorless and
extremely dangerous gas which can cause
unconsciousness or death
Never operate the engine indoors or in a
poorly ventilated area, such as a tunnel or
cave, etc.
Exercise extreme care when operating the
engine near people or animals. Keep the
exhaust pipe free of external objects.

REFUELING PRECAUTIONS
 Be sure to stop the engine before refueling.
 Do not overfill the fuel tank.
 If fuel is spilled, wipe it away carefully and
wait until the fuel has dried before starting
the engine again.
 When changing oil, make sure that the fuel
cap is tightly secured to prevent fuel
leakage.

FIRE PREVENTION


Never operate the engine while
smoking or near an open flame.



Never use the engine around dry brush,
twigs, cloth-rags, or other flammable
materials.
Keep the engine at least 3 feet (1 meter)
away from buildings or other
structures.
Keep the engine away from flammables
and other hazardous materials.




PROTECTIVE COVER




Always place the protective covers
over the rotating parts. If rotating parts
such as the driving pulley, belts, and
shafts are exposed, serious injuries can
be caused. To prevent injury, please
equip all rotating parts with protective
covers.
Be careful of hot parts. The muffler
and other engine parts can become very
hot while the engine is running or after
the engine has been run. Always
operate the engine in a safe area and
keep children away from running
engines.

SURROUNDINGS
 Operate the engine on a table or level
surface free of small rocks and loose
gravel.
 Operate the engine on a level surface. If
the engine is tilted, fuel may spill from the
gas tank.
NOTE: Operating the engine at a steep incline
may cause the engine to seize up due to
improper lubrication even when the oil level is
a maximum.
 Be careful of fuel spillage when
transporting the engine. Always tighten
the fuel cap and close the fuel strainer cock
before moving the engine around.
 Never move the engine while it is in
operation.
 If the engine will be transported over a
long distance, drain all the fuel from the
fuel tank to prevent fuel leakage.
PRE-OPERATION CHECKS


Carefully check fuel pipes and fuel joints
for fuel leakage. Leaked fuel creates a
dangerous situation.



Verify that all the nuts and bolts of the
engine are tights. A loose nut or bolts may
cause serious engine failure and could lead
to serious injuries.
Always check the engine oil and refill it if
necessary.
Always check the fuel level and refill it if
necessary. Never overfill the fuel tank
Avoid wearing dangling or long clothes
such as loose aprons, towels, and waist
belts, as these items may be caught in a
rotating part of the engine.





Chapter 1 Technical Specifications and Data
1-1 Technical specifications in English Units
Model

170F

178F

186F

Item
Type

Single vertical cylinder, 4-stroke, air-cooled, direct injection

Bore x Stroke (in.)

2.76 x 2.17

3.01 x 2.44

3.39 x 2.76

Displacement (cu. in.)

13.36

18.67

25.51

Speed (rpm)

3600

Continuous

4.0

5.9

8.85

Maximum

4.5

6.6

9.85

.66

1.45

27.1

37.17

55.75

8.45

13.51

20.27

Output
(HP)

Fuel tank capacity
(US gallons)
Lube-oil
Full
Capacity
(oz)
Effective
Crankshaft direction

Clockwise from flywheel end

Cooling type

Forced air cooled by flywheel fan

Lubrication type

Pressure splash

Starting system

Recoil manual start and or optional electric start

Dry weight (recoil) (lbs)

106

Dry weight (elec.) (lbs)

117

Dimensions (LxWxH)
(inch)

13.1 x 14.8 x 16.3

15.1 x 16.6 x 17.7

16.4 x 17.4 x 19.5

Technical specifications in SI units
Model
Item
Type

170F

178F

186F

Single vertical cylinder, 4-stroke, air-cooled, direct injection

Bore x Stroke (mm)

70 x 55

78 x 62

86 x 70

Displacement (cc)

211

296

406

Speed (rpm)

3600

Continuous

2.98

4.4

6.6

Maximum

3.36

4.92

7.3

2.5

3.4

5.5

1.10

1.65

.25

.40

.60

Output
(kw)

Fuel tank capacity
(Liters)
Lube-oil
Full
Capacity
(L)
Effective
Crankshaft direction

Clockwise from flywheel end

Cooling type

Forced air cooled by flywheel fan

Lubrication type

Pressure splash

Starting system

Recoil manual start and or optional electric start

Dry weight (recoil) (kg)

Dry weight (elec.) (kg)

Dimensions (LxWxH)
(mm)

332 x 376 x 415

383 x 421 x 450

417 x 441 x 494

1-2 Overall engine dimensions

Installation Conditions

(1) There must be a tight stationary foundation for the diesel engine to avoid vibrations or
movement when the engine is running. For prolonged engine life, consider using some
type of motor mount.
(2) Make sure that the centering position of the output shaft is properly aligned.

(3) Verify that the dimensions of the hole on the belt wheel and keyway shaft match or
correspond with each other. Also make sure that the bolt of the engine shaft is
tightened to the proper torque specifications.
(4) When the engine is matched with other belt driven machines, the total desired belt
distance traveled by the driven wheel must equal the total distance traveled by the
driver wheel. If this is not properly calculated and matched, the desired speed on the
driven wheel will be incorrect. A formula used to calculate the necessary diameters of
the various wheels is provided below.
The diameter of driving wheel (belt wheel) can be calculates as follows:
Diameter of engine driving wheel (engine pulley) =
Diameter of driven machine x speed of driven machine
Diesel speed (engine speed)

(5) Make sure that the belt has a correct tension to it.
Note: If the belt is to tight, the engine bearings will wear at a high rate leading to engine failure.
If the belt is to loose, the belt will slip at high speeds and high loads causing high pitch whistling
noises.

1-2.1 Allowed clearance between belt wheel and engine
The belt pulley wheel should be as close to the engine as possible. The values of L are tabulated
in table 1-1.
Table 1-1. Allowed belt pulley wheel to engine distances.

1-2.2 Crankshaft driving angles must be less than 120o, see Fig 1-1
The tilt must be kept within the allowed values shown in Fig 1-2
Fig 1-1. Allowed driving angles.

Fig 1-2. Allowed tilt angles.

1-2.3 Please contact our dealers about the electric circuits involved with this engine.
We recommend the use of accumulators rated at 20 hours shown in table 1-2.
Model
170F
178F
186F

Units: (amp-hours)
18~24
24~26
36~45

Table 1-2.

1-2

Diesel Engine shaft specifications

units: mm

Sizes of PTO flanges

Diesel Engine Power Curves

1-4 Names of Diesel Engine Parts

1-5 Valve timing, initial angle of fuel delivery and valve clearances.
Table 1-3.

Units: Degrees

1-5.2 Initial angle of fuel delivery
Table 1-4

Units: Degrees

1-5.3 Valve Clearances
Table 1-5

1-6 Temperature ranges for exhaust and injection pressure specifications

1-7 Torque specifications for various engine nuts and bolts
Table 1-7. Torque specifications in SI units

Units: N m

CHAPTER 2

DIESEL ENGINE OPERATION

2-1 Please pay close attention for safe operation of the diesel engine.
1. The fuel used must be filtered by silk fabric or settled for 24 hours before it is used in the
engine. Never add oil to the crankcase when the engine is running.
2. Keep flammable and combustible goods away from engine while engine is running. The
engine should be placed in a simple ventilated place.
3. Do not touch the muffler when the engine is running or just after it has stopped.
4. The diesel engine should be operated at its rated power and rated speed. If abnormal
operating conditions are detected, stop the engine immediately to check and fix the
problem.
5. A new engine must be properly broken in. For the first 20 hours, run the engine at low
speed and low loads. Do not allow engine to run at high speeds and high loads during the
break in period.
2-2 Fuel Choices

Oiling plug:
In winter, if it is difficult to start the
engine, pull the plug out and fill 2cc of lube oil
into the hole and then put the plug back in
place. Make sure the plug is tight, if not, the

Compression release lever:
Push the lever down
to start the engine

engine can absorb dust into the combustion
chamber and damage itself.
Muffler
The factory has replaced the
engine fuel and engine oil
once already. To check the
fuel pipeline, make sure the
fuel line is completely
drained. IF there is air in the
pipeline, drain it out. To do
this, loosen the nut between
the injection pump and fuel
pipe, then drain out the air
until there are no bubbles
left in fuel line.

Oil Lubricant Inlet:
Place the engine on level ground and fill the lubricant into the inlet. When checking the
oil level, gently place the dipstick into the oil. Do not turn the oil scale.

If your engine is still relatively new, follow the break in procedure. The life of the engine
will shorten if it is overloaded during its break in period. For the first 20 hours, the engine
must be started and stopped according to the test run method.
Avoid overloading the engine
Change the engine oil regularly. Below a table for the interval of oil changes will be
provided.

2-3 Starting the Diesel Engine
2-3.1 Recoil Starting
Note: When the engine is running, do not pull the recoil handle, otherwise the engine may be
damaged.

2-3.2 Diesel engine with electric starter system
(1) Starting
The preparation of the diesel engine for the electric starting system is the same as the
manual recoil type.
a. Open the fuel cock.
b. Set the speed governor lever to the start position.
c. Turn the start switch clockwise to the “Start” position.

d. If the engine is started, immediately remove your hand away from the key
switch.
e. If the engine does not start after 10 seconds, wait awhile (about 15 seconds)
before trying to start the engine again.
If you run the starter motor to long, the voltage of
the accumulator will drop and the motor may be
damaged. Keep the key switch in the “ON” position
(2) Battery
a. Always check the liquid level of the battery every month, if the level is lower
than the low limit mark, refill the battery with distilled water till you reach the
upper limit mark.
If the liquid level in the battery is to low, the electric
starter will not function to its best potential. Always keep
the level of the liquid in the battery between the upper and
lower limits. If there is too much liquid, the liquid will
splash onto other nearby parts thereby ruining the battery.
2-3.3 Cold starting
If the engine is difficult to start in winter, take off the rubber seal plug and put 2cc of
machine oil into the hole.
Notice: Engines supplied to the Torrid Zone will not contain the rubber plug. A solid
plug is provided instead.

Warning:
Never use flammable liquids as fuel, such as gasoline etc. Also, never
take away the air cleaner for easy starting of the engine, doing so may
cause explosions from the intake gases.

Never take the oil plug unless you’re planning on filling the oil. If the
plug is not in place, rain, dust, and other impurities may be sucked into
the engine causing serious damage to the engine parts.

2-4 Running and stopping of the Diesel Engine
2-4.1 Running the Diesel engine
(1) Preheat the engine for three minutes at no load.
(2) Set the speed governor lever to the desired speed.
Use the speed governor lever to control the
speed of the engine. Never loosen or
readjust the speed limiting screw and the

2-4.2 Checks on the engine while the engine is running.
(1) Check to see whether there are abnormal noises such as vibration.
(2) Check to make sure there is good combustion. (Extremely high speeds
are not recommended for the engine, as that will decrease engine life.)
(3) Check to see the color of the exhaust gases to see if it is to white or to
black.
(4) If any of these conditions are detected, stop the engine immediately
and contact your nearest dealer for repair information.
2-4.3 Stopping the engine
(1) First, bring down the speed of the engine by using the speed governor.
Let it run for 3 minutes at no load before stopping it.
(2) Then stop the engine.
Sudden stops to the engine will cause abnormal
temperature increases in the block of the engine.
Decrease the load gradually when stopping the engine.
Also, never stop the engine with the decompression
(3)lever.
Set the fuel cock at “S” (stop position)

(4) If the engine comes with an electric starter, turn the starting switch to
the “Off” position.
(5) Pull the recoil handle slowly until pressure is felt by your hand, this
means the piston is on the compression stroke; where the intake and
exhaust valves are closed and then let the handle recoil back into the
engine. This natural position will prevent rust from occurring when
the engine is being stored for long periods of time.
Note: Only perform step 5 when the engine is off. Doing so otherwise
will damage the engine.

CHAPTER 3. TECHNICAL MAINTENANCE OF DIESEL ENGINE
3-1 Daily checks and maintenance
Check the oil level of the engine to see whether it is between the upper and lower limits.
Check to see whether there any oil leaks within the engine.
Keep the engine clean by cleaning up the dirt and other greasy deposits on the engine.
3-2 Regularly checks and maintenance
Regular checks and maintaining are very important for normal operation and engine life. The
following table indicates what is necessary to be performed at specific time intervals. The
marks signify that a special tool or technique is needed for maintenance. Please contact your
local dealer for special maintenance.

The core of the air filter may become dirty from various impurities. If this occurs, the
performance of the engine will decrease because the amount of air entering the combustion
chamber is incorrect. Also, because the amount of air is incorrect, the amount of fuel entering
also becomes incorrect leading to an overall incorrect air/fuel mixture. This will lead to poor
performance of the diesel engine. Always keep the air filter and air filter core clean.
3-3 Storing the engine for long periods of time.
Please follow the instructions below if you plan on storing the engine for long periods of time.
(1) Run the engine for three minutes to burn out the excess fuel in the chamber.
(2) Quickly drain way the engine oil lubricant before the engine becomes cool and refill it
with new oil. The figure below shows where the oil plugs are.

(3) Take the rubber plug off the cover of the rocker shaft and put about 2cc of lubricant into
it and put the plug back in place. The figure below shows where to access the plug.

(4) For recoil starting engines, push the decompression lever down and pull the recoil
starter two or three times. This pushes all the excess intake mixture out of the
combustion chamber.
(5) For engines that come with an electric starter, hold down the decompression lever and
turn the start key switch to the start position. Let the engine rotate for about two to three
seconds. Once again, this pushes all the excess intake mixture out of the combustion
chamber.
(6) Now pull the decompression lever up and pull on the recoil starter slowly until you feel
resistance. The resistance point occurs on the compression stroke where the intake and
exhaust valves are closed. It is also the point that will prevent moisture from entering the
chamber to cause rust.
(7) Finally, clean excess oils from the engine and put the engine in a nice dry place.

CHAPTER 4 PART LISTINGS
Diesel Engine Exploded View

4-1 Engine Block
Table 4-1. Please refer to Fig 4-1 for illustration
Number
1
2
3

6
7

11
12
13
14
15
16
17
18
19
20
21
22
23

Part Number
ETQ1710626
ETQ 17138
ETQ 70-1704901
ETQ 78-1704902
ETQ 86-1704903
ETQ 70-1705001
ETQ 78-1705002
ETQ 86-1705003
ETQ 70-1704801
ETQ 78-1704802
ETQ 86-1704803
ETQ 70-1719504
ETQ 78-1719704
ETQ 86-1706314
ETQ 70/78-17182
ETQ 86-1720106
ETQ 70-1700201
ETQ 78-1700202
ETQ 86-1700203
ETQ 70-1700301
ETQ 78-1700302
ETQ 86-1700303
ETQ 70-1700107
ETQ 78-1700103
ETQ 86-1700110
ETQ 70-1711702
ETQ 78-1711702
ETQ 86-1711704
ETQ 17121
ETQ 17120
ETQ 1711324
ETQ 17123
ETQ 17122
ETQ 1719605
ETQ 70-1702001
ETQ 78/86-1702002
ETQ 1710103
ETQ 17159
ETQ 17158
ETQ 17195
ETQ 1710636

Name of Part
Bolt M10 x 20 (GB5787-86)
Starter motor hole cover
Cylinder head nuts (long)

Cylinder head nuts (short)

Cylinder head nut gasket

Cylinder head gasket (0.4)
Oval ring gasket 5.1 x2.5
Oval ring gasket 5.1 x2.6
Cylinder head bolts (long)

Cylinder head bolts (short)

Engine block

Rear oil seal 30 x 45 x 8
Rear oil seal 35 x 50 x 8
Oil drain plug
Oil drain plug gasket
O ring for oil dipstick
Fuel pump fastening bolt (short)
Fuel pump fastening bolt (long)
Fuel injector gasket (0.5)
Oil dipstick
M6 nut
Sealing plate gasket
Sealing plate
Thrust piece
Flange face with bolts (GB5789-86)

Qty each set
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
2
2
2
2
2
2
2
1
1
1
1
1
1
1
2
1
2
1
2
2
3
1
1
1
1

24
25

27
28
29
30
31

35
36
37
38

ETQ 1710010
ETQ 70-1710006
ETQ 78-1710007
ETQ 86-1710008
ETQ 70-1704601
ETQ 78-1704602
ETQ 86-1704603
ETQ 70-1710002
ETQ 78-1710003
ETQ 86-1710004
ETQ 1711111
ETQ 78/86-17080
ETQ 70-1701901
ETQ 78-1701902
ETQ 86-1701904
ETQ 17133
ETQ 70-1710083
ETQ 70-1711062
ETQ 78-1710083
ETQ 86-1710083
ETQ 70-1711701
ETQ 78-1711703
ETQ 86-1711705
ETQ 70-1701801
ETQ 78-1701802
ETQ 86-1701803
ETQ 78-1701903
ETQ 78-1711703
ETQ 70-1711602
ETQ 78/86-1711602

Needle bearing 7941/15
Ball bearing 306 (GB/T276-94)
Ball bearing 307 (GB/T276-94)
Ball bearing 308 (GB/T276-94)
Crankcase cover gasket
Bearing 205 (GB/T276-94)
Bearing 206 (GB/T276-94)
Bearing 207 (GB/T276-94)
Retaining pin 8x12 (GB119-86)
Fuel Pipe
Crankcase cover
Inner Hexagon Plug G1/8
M8 x 33.5 Bolt
M6 x 25
M8 x 33.5 Bolt
M8 x 33.5 Bolt
Front oil seal 25 x 42 x 10
Front oil seal 30x 45 x 10
Front oil seal 35 x 50 x 10
Main Bushing
Front side crankcase cover
Front side oil seal
Aluminum Plug Diameter 8 x 8

1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
14
15
16
1
1
1
1
1
1
1
1
2
3

Note: If purchasing the engine cylinder block, the included parts are numbers 1, 2, 8, 9, 10, 12,
13, 14, 15, 16, 18 and 24. The parts of the crankcase cover include numbers 14, 18, 27, 28, 29,
30, 31, 35 and 38.

Fig 4-1. Exploded view of engine block assembly

4.2 Cylinder head Assembly
Table 4-2. Part listing for cylinder head assembly. Please refer to Fig 4-2
No.
1
2
3
4
5
6
7
8
9
9A
10

15
16
17
18
19
20

Code
Names of Parts
ETQ 70/78-1710755
M6 x 55 Flanged Bolt (GB5789-86)
ETQ 86-1710730
M6 x 70 Flanged Bolt (GB5789-86)
ETQ 17142
Oiling hole plug
ETQ 17139
Decompression shaft
ETQ 1711310
O ring 10 x 1.9 (GB1235-76)
ETQ 17140
Decompression shaft spring
ETQ 1711103
Retaining pin 3 x 16 (GB119-86)
ETQ 70/78-17066
Cylinder head cover
ETQ 86-1706603
ETQ 70/78-17170
Cylinder head cover gasket
ETQ 86-1717001
ETQ 70/78-17168
Rocker arm
ETQ 86-1716801
ETQ 17165
Valve clearance adjusting screw
ETQ 70/78-1710745
Rocker arm shaft fastening bolt
ETQ 86-1716901
ETQ 70-1705201
ETQ 78-1705202
Adjusting valve spacer
ETQ 86-1705203
ETQ 70-1702701
ETQ 78-1702702
Valve clip
ETQ 86-1702703
ETQ 70-1702801
ETQ 78-1702802
Valve spring seat
ETQ 86-1702803
ETQ 70-1702901
ETQ 78-1702902
Valve spring
ETQ 86-1702903
ETQ 70-1702003
ETQ 78-1702004
Valve guide oil seal
ETQ 86-1702100
ETQ 70/78-17136
Valve spring washer
ETQ 86-1713601
ETQ 1711104
Pin 4 x 8 (GB119-86)
ETQ 1710920
Double ended stud AM8 x 20 (GB899-88)
ETQ 70-1702403
ETQ 78-1702402
Cylinder Head
ETQ 86-1702404
ETQ 70/78-1710955 Double ended bolt AM6 x 55 (GB900-88)
ETQ 86-1710956
Double ended bolt AM6 x 75 (GB900-88)
ETQ 70-1702501
ETQ 78-1702601
Intake valve

Qty each set
2
2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
2
2
2
4
4
4
2
2
2
2
2
2
2
2
2
2
2
1
2
1
1
1
2
2
1
1

22
23
24
25
26
27
28

ETQ 86-1702503
ETQ 70-1702502
ETQ 78-1702602
ETQ 86-1702605
ETQ 1710103
ETQ 1717302
ETQ 1724502
ETQ 70-1712201
ETQ 78-1712201
ETQ 86-17122
ETQ 17141
ETQ 1711312

Exhaust valve
M6 (GB6177-86) Nut
Fuel injector pressure plate
Fuel injector gasket
AM 6 x 42 Fuel injector bolt
AM 6 x 42 Fuel injector bolt
Fuel injector bolt (long)
Breather assembly
O ring 12 x 1.9

1
1
1
1
2
1
1
2
2
2
1
1

Note: The parts of the cylinder head cover included are numbers 2, 3, 4, 5, 6, 7, 27, 28 and 29.
The parts of the rocker arm include 9 and 9a.
The parts of the cylinder head include 12, 13, 14, 15, 16, 17, 18, 19, 20, 22 and 26.

Fig 4-2. Exploded view of cylinder head

4-3 Piston connecting rod and crankshaft balancing mechanism

No.
1

8
9
10

Code
ETQ70-1701403
ETQ 78-1701402
ETQ 86-1701404
ETQ 70-1701601
ETQ 78-1701602
ETQ 86-1701603
ETQ 70-1701200
ETQ 78-1701202
ETQ 86-1701204
ETQ 78FS-1701203
ETQ 70-1701701
ETQ 78-1701702
ETQ 86-1701703
ETQ 70-1701301
ETQ 78-1701302
ETQ 86-1701303
ETQ 70-1701501
ETQ 78-1701502
ETQ 86-1701503
ETQ 70-1710001
ETQ 78-1710001
ETQ 86-1710000
ETQ 70-1706501
ETQ 78-1706502
ETQ 86-1706503
ETQ 1710507
ETQ 70-1707701
ETQ 78-1707702
ETQ 86-1707703

11
12
13
13A
14

15
16

Name of Part
Piston Rings
Retainer clip of Piston pin Dia. 19mm
Retainer clip of Piston pin Dia. 21mm
Retainer clip of Piston pin Dia. 23mm
Piston

Piston pin

Connecting rod

Connecting rod journal bearing
Bearing 202 (GB/T276-94)
Bearing 203 (GB/T276-94)
Balancing Shaft
Key 5 x 7 (GB1096-79)
Balancing Shaft Timing Gear
Bolt (included with diesel engine)

ETQ 70-1700801
ETQ 78-1700802
ETQ 86-1700803
ETQ 70/78-1710512
ETQ 86-1710512
ETQ 86-1710514
ETQ 70-1710530
ETQ 78/86-1710563
ETQ 70-1700601
ETQ 78-1700701
ETQ 86-1700708
ETQ 1711601

Crankshaft timing gear
Key 5 x 12 (GB1096-79)
Key 5 x 12 (GB1096-79)
Key 5 x 14 (GB1096-79)
Key 5 x 30 (GB1096-79)
Key 6 x 63 (GB1096-79)
Crankshaft
6 x 8 Plug

Qty each set
1
1
1
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
2
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1

Table 4-3. Please refer to Fig 4-3 for a complete illustration of the parts.

18
19
20

21
22
23

24
25

26
26S
27
28
30
31
32

ETQ 70-1707801
Balancing Shaft Driving Gear
ETQ 78-1707802
ETQ 86-1707803
ETQ 70-1704400
ETQ 78-1704404
Flywheel
ETQ 86-1704409
ETQ 70/78-17156
Flywheel nut gasket
ETQ 86-1715601
ETQ 70/78-17155
Flywheel nut
ETQ 86-1715501
ETQ 70-1704501
ETQ 78-1704502 Flywheel ring gear (for electric starter)
ETQ 86-1705504
ETQ 1704705
Sleeve of fuel pump rod
ETQ 70-1705101
Push rod
ETQ 78-1705102
ETQ 86-1705103
ETQ 70-17157
ETQ 78-17157
Tappet
ETQ 86-1715701
ETQ 70/86-1710514
Key 5 x 14 (GB1096-79)
ETQ 78-1710504
Key 4 x 12 (GB1096-79)
ETQ 70-1701001
Camshaft
ETQ 78-1701002
ETQ 86-1701000
ETQ 78-1701003
Front Side Camshaft
ETQ 70-1701101
Camshaft timing gear
ETQ 78-1701102
ETQ 86-1701103
ETQ 78-1700702
FS crankshaft
ETQ 78-1710545 Key 8 x 45 (GB1096-79) camshaft key
ETQ 78-1704403
FS Flywheel
ETQ 78-1704503
FS flywheel ring gear

1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1

Note: The included parts with the piston connecting rod are numbers 1,2,3,4,5 and 6
The included parts with the balancing shaft are numbers 8, 9 and 10.
The included parts with the crankshaft are numbers 9, 12, 13, 15 and 17.

Fig 4-3. Exploded view of Piston / Crank Assembly

4-4 Fuel System Parts
Table 4-4. Fuel system parts; please refer to Fig 4-4 for a complete illustration.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

25
26
27
28

Code
ETQ 1710745
ETQ 17185
ETQ 1710208
ETQ 70-1705801
ETQ 78-1705802
ETQ 86-1705803
ETQ 1705301
ETQ 17212
ETQ 17192
ETQ 17184
ETQ 70-1704201
ETQ 78-1704202
ETQ 86-1704203
ETQ 17212
ETQ 17147
ETQ 17151
ETQ 17152
ETQ 17183
ETQ 1710714
ETQ 1710106
ETQ 1710206
ETQ 17150
ETQ 17154
ETQ 1719403
ETQ 17189
ETQ 17148
ETQ 70-1704301
ETQ 78-1044302
ETQ 86-1704303
ETQ 70-1704702
ETQ 78-1704702
ETQ 86-1704700
ETQ 70-1705601
ETQ 78-1705602
ETQ 86-1705603
ETQ 17146
ETQ 17153
ETQ 1705302

Name of part
M8 x 45 (GB5787-86) Bolt
Upper fuel tank bracket fastener
Flat washer 8 (GB97.1-85)
Upper fuel tank bracket
Injector
Hose Clamp
Fuel Pipe
Rubber fuel tank mount
Fuel Tank
Fuel Pipe connectors
Fuel Pipe
M6 (GB6177-86) Fuel drain gasket
Fuel drain plug
Lower fuel tank bracket
M6 x 14 (GB5787-86) Bolt
M6 (GB6177-86) Nut
M6 (GB97.1-85) Flat washer
Fuel tank cock assembly
Flat washer
Fuel pipe clamp
Fuel pipe
Fuel filter gasket
Fuel filter assembly

Fuel injector pump

High pressure fuel pipe
Fuel cup filter
Fuel cap assembly
Fuel injector cap

Qty each set
1
1
1
1
1
1
1
2
1
4
1
1
1
2
1
1
1
1
2
2
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Note: The fuel tank assembly comes with numbers 9, 10, 11, 12, 13, 16, 17, 18, 19, 22, 23, 26
and 27.
39

Fig 4-4. Exploded view of fuel tank parts

4-5 Oil and speed control system
Table 4-5. Please refer to Fig 4-5 for a complete illustration.
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

Code
ETQ 70-1710712
ETQ 70-17187
ETQ 70-17188
ETQ 70-1711314
ETQ 78/86-1711316
ETQ 70-1702101
ETQ 1710712
ETQ 17022
ETQ 1711334
ETQ 70-17135
ETQ 78-17135
ETQ 86-1713501
ETQ 1711103
ETQ 78/86-1710714
ETQ 78/86-1702103
ETQ 70-1711314
ETQ 78/86-1711316
ETQ 78/86-17080
ETQ 70-1702301
ETQ 78-1702302
ETQ 86-1702302
ETQ 17132
ETQ 17131
ETQ 17234
ETQ 17125
ETQ 1710009
ETQ 70-1700501
ETQ 78-1700502
ETQ 86-1700503
ETQ 17124
ETQ 70-17126
ETQ 78-17126
ETQ 86-1712601
ETQ 17164
ETQ 17167
ETQ 1710714
ETQ 1710714
ETQ 17162
ETQ 17161
ETQ 70-17160

Name of part
M6 x 12 (GB5787-86) Bolt
Oil filter cover
Oil filter cover gasket
Sealing Ring 20 x 2.5
Sealing Ring 20X2.65
Oil filter assembly
M6 x 12 (GB5787-86) Bolt
Oil pump cover
O ring 34.5 x 1.8 (GB3452.1-82)
Oil Pump
3 x 16 (GB119-82) pin
M6 x 14 (GB5789-86)
Oil filter cleaning element
Sealing ring 20 x 2.5
Sealing ring 20 x 2.65
Oil Guide
Oil pump driving gear
Fly block pin
Fly block
Governor fork tappet
Lever shaft gasket
Bearing 7941/8 (GB290-64)
Fork lever assembly
Washer
Fuel controller parts
Handle bracket
Speed-control lever
M6 x 14 (GB5787-86)
M6 x 18 (GB5787-86)
Lead seal
Return spring 2
Return spring 1

Qty each set
2
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1

31
32
33
34
35
36
37
38
39

ETQ 78-17160
ETQ 86-1716001
ETQ 1710645
ETQ 1710111
ETQ 1706701
ETQ 1706901
ETQ 1710714
ETQ 1710106
ETQ 1716801
ETQ 1730720

Speed-control spring
M6 x 45 (GB6172-86) Bolt
M10 x 1.25 Nut
FG Lever
FG governor spring
M6 x 14 (GB5789-86) Bolt
M6 (GB39-88) Nut
Washer
Shaft Handle

1
1
1
1
1
1
1
1
2
1

Fig 4-5. Lubrication and speed control system

4-6 Cooling and recoil starting system

No.
1
1S
2
3

4
5

6
7
8
9
10
11
12
13
14
15
16

17
17S
18
19

Code
Name of part
ETQ 70-1703401
Recoil case assembly
ETQ 78-1703402
ETQ 86-1703404
ETQ 78-1703404
178FS case assembly
ETQ 1710708
M6 x 8 (GB5787-86)
ETQ 70-1703501
ETQ 78-1703502
Recoil starter rope
ETQ 86-1703503
ETQ 70-1703801
Recoil starter handle
ETQ 78-1703802
ETQ 86-1703802
ETQ 70/78-1703301
Flat Torsional spring
ETQ 86-1703303
ETQ 70-1703201
ETQ 78-1703202
Recoil reel
ETQ 86-1703203
ETQ 70-1704003
Starting claw
ETQ 78/86-1704005
ETQ 70-17218
Helical spring
ETQ 78/86-1721801
ETQ 70-17219
Torsional spring
ETQ 78/86-1721901
ETQ 70-1704004
Starting claw plate
ETQ 78/86-1704006
ETQ 70-17039
Friction plate
ETQ 78/86-1703902
ETQ 70-1703903
Friction plate gasket
ETQ 78/86-1703803
ETQ 1710306
Spring washer
ETQ 1710106
M6 (GB6170-86) Nut
ETQ 1710712
M6 x 12 (GB6170-86)
ETQ 70-1705701
ETQ 78-1705702
Starter
ETQ 86-1705703
ETQ 70-1704101
Recoil starter cover
ETQ 78-1704102
ETQ 86-1704105
ETQ 78-1704106 Recoil starter cover assembly
ETQ 78-1710622
M6 x 22 (GB5787-86) Bolt
ETQ 70/86-1710622
ETQ 78-1710207
M6 washer (GB90-85)
ETQ 70/86-1710207

Qty each set
1
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
3 or 4
1
1
1
1
1
1
1
5
4
5
4

Table 4-6. Please refer to Fig 4-6 for illustration.

20
21
22
23
24
25
26

ETQ 78-17145
ETQ 70/86-17145
ETQ 78-17143
ETQ 70/86-17143
ETQ 17144
ETQ 78/86-17127
ETQ 78/86-17129
ETQ 78/86-17128
ETQ 70-1700401
ETQ 78-1700402
ETQ 86-1700403
ETQ 70-1710712
ETQ 78-1710718
ETQ 86-1710614

Collar
Shock absorber
Shock pads
Shock isolator
Collar
Pad
Wind leading plate
M6 x 12 (shaped piece) Bolt
M6 x 18 (shaped piece) Bolt
M6 x 22 (shaped piece) Bolt

5
4
5
4
1
1
1
1
1
1
1
1
1
1

Fig 4-6. Exploded view of cooling and recoil starting system.

4-7 Air cleaner and silencer system

No.

Code
ETQ 70-1703101
ETQ 78-1703102
ETQ 86-1703103
ETQ 70-1703001
ETQ 78-1703002
ETQ 86-1703003
ETQ 70/78-17175
ETQ 86-1717501
ETQ 17137

ETQ 1710722

2
3

6
7
8
9

10
11
12
13
14

15
16
17
18
19
20
21
22

Name of part
Intake pipe gasket

Intake pipe
Air cleaner gasket
Bolt
M6 x 22 (GB5789-86) Shaped bolt

ETQ 70/78-17174
ETQ 86-1717401
Air filter assembly
ETQ 1710103
M6 (GB6177-86) Nut
ETQ 70/78-1717602
Air filter element
ETQ 86-1717601
ETQ 70/78-17186
Muffler gasket
ETQ 86-1718601
ETQ 70-1705401
Muffler assembly
ETQ 78-1705402
ETQ 86-1705403
ETQ 1710208
Flat washer Dia. 8
ETQ 1710308
Spring washer Dia. 8
ETQ 1710108
M8 (GB6170-86) Nut
ETQ 70-1710714
M6 x 14 (GB5789-86) Bolt
ETQ 78/86-1710757
M8 x 14 (GB5789-86) Bolt
ETQ 70-1705501
Muffler screen cover
ETQ 78-1705502
ETQ 86-1705503
ETQ 1710708
M6 x 14 (GB5789-86) Bolt
ETQ 70/78-1705404
Muffler tail pipe
ETQ 86-1705406
ETQ 70/78-17179
Inner shock proof sealing ring
ETQ 86-1718002
ETQ 70/78-17180 Bottom case assembly of Air Cleaner
ETQ 86-1718003
ETQ 70/78-17178
Outer shock proof sealing ring
ETQ 86-1718001
ETQ 70/78-17181
Air filter shock absorber
ETQ 86-1718101
ETQ 70/78-1710103
Collar (GB6177-86)
ETQ 86-1720106
Collar (GB6177-86)

Qty each set
2
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Table 4-7. Please refer to Fig 4-7 for a complete illustration.

23
24
25

ETQ 70/78-17182
ETQ 86-1720106
ETQ 17177
ETQ 70/78-1710107
ETQ 85-1710109

Air filter shock absorber

M6 butterfly nut
M8 butterfly nut

Fig 4-7. Exploded view of muffler assembly

1
1
1
1
1

CHAPTER 5 ENGINE TROUBLESHOOTING
5-1 Engine is not starting
Possible Cause
Weather is cold. Engine oil may have become
overly adhesive.

Remedy
Put engine oil into crankcase after preheated. Put
engine oil into the inlet manifold. Disconnect the
belts to the engine and run engine under no load
conditions until the engine becomes hot. Then
connect the belts back and start the engine again.
Clean the fuel filter and fuel pipe, and then replace
the fuel with new fuel.
Use the correct specific fuel.

Fuel system may be contaminated with water.
The fuel has thickened and does not permit easy
flow.
There is air in the fuel system.

Drain out the air and fuel and tighten the
connectors of the fuel pipe.
Check the position of the speed governor handle
and clean the fuel injector spray nozzle. Check the
fuel pump and change the pump or fuel nozzle if
necessary.
The spray nozzle may be bad, or the delivery angle
may be incorrect. The gasket of the cylinder head
may be leaking and the pressure of compression is
not held. Fix each component that is necessary to
achieve correct compression and a correct angle of
spray.
Fuel level in fuel tank may be to low. Fill the fuel
tank until it is full. Or the fuel pipe or fuel filter
may be clogged, fix this by replacing them.
Replace head gasket or tighten the cylinder head
bolts in a diagonal line pattern. If changing the
head gasket, tighten the cylinder head bolts once
again after running the engine.
Change the piston rings.
Make sure each piston ring gap is off by an angle
of 120 degrees from each other.
Clean the rings and cylinder with diesel fuel and or
replace the rings if necessary.
Grind the gas valves, if the vestige is too deep,
please send it to the factory for replacement
Adjust the clearance as specified in the technical
specifications chart.
Disassemble the gas valve and clean the stem and
guide pipe.

Very little fuel injected into cylinder or the injected
spray is bad.
Incomplete combustion

Fuel delivery is not constant
Low compression

Piston rings worn leading to low compression
Piston ring gaps may all be set up in a line
Piston rings are stuck or broken
Gas valves are leaking
Incorrect valve clearance
The valve stem is clipped on the guide pipe

5-2 Diesel engine lacks power

Possible Cause
Fuel system clogged. Clogged fuel line or clogged
fuel filter.
Fuel pump is bad.

Remedy
Clean fuel filter and fuel pipe. Check the fuel
switch, it should be opened fully.
Service or change the damaged parts of the fuel
pump.
Adjust the injection pressure.

Nozzle not operating correctly or incorrect
injection pressure.
Carbon deposits in the spray hole.
Adhered needle valve.
Fitting between the needle valve and needle valve
body is too loose.
Air filter is dirty.

Clean out the spray hole.
Clean or change needle valve.
Change the needle valve or needle valve body.
Disassemble the air filter assembly and clean the
core and air filter.
Check the speed of the tachometer. Adjust the
high speed limiting screw.

Engine may be to slow.
5-3 Engine stops automatically
Possible cause
No fuel in system.
Fuel line is clogged.
There is air in fuel system.
Needle valve of nozzle adhered.

Remedy
Add fuel to the fuel tank.
Clean out fuel line.
Clean out the system and put new fuel in.
Clean or grind the nozzle if necessary replace the
nozzle.
Clean the air filter.
Decrease the load.

Air filter is clogged.
The load suddenly increases.
5-4 Engine exhaust very black
Possible cause
Overloaded engine

Remedy
Decrease the load. If driven machine is not
properly fitted with proper engine, change the
engine.
Check the fuel injection pressure and spraying
conditions. Correct or replace the nozzle.
Clean the air filter and check to see what the cause
of the leak is and fix as necessary.

Bad fuel injection.
Not enough intake air or problems with leaking air.

5-5 Engine exhaust very blue
Possible cause
Engine oil in the cylinder.
Piston ring worn or piston ring gaps are all
aligned to permit oil to travel up into
combustion chamber.
Worn piston or worn cylinder.
Valve and or valve guide worn.

Remedy
Check the oil level and drain out unnecessary engine
oil.
Check or change the piston rings and make sure the
gaps are not all aligned.
Replace as necessary.
Change the valve or valve guide as necessary.

5-6 Engine exhaust white
Possible cause
There is water in the diesel fuel

Remedy
Clean the fuel tank and diesel filter, replace the
diesel fuel.

5-7 Various methods of checking to see if the engine is malfunctioning
Possible cause
High and low speed fluctuation.

Remedy
Check the speed governor system to see if it is
loose. Also, check to make sure there is no air
in the fuel system.
Check each rotating part carefully.
Check the fuel system, especially the injection
nozzle.
The fuel delivery angle is too large. Adjust it
to the correct specifications.

Abnormal sounds suddenly appear.
Sudden appearance of black smoke from
exhaust.
There are metal knocking sounds in the
cylinder.

Limited Warranty
Eastern Tools & Equipment, Inc. will repair or replace, free of charge, any part or parts of the generator that are defective in
material or workmanship or both. Transportation charges on parts submitted for repair or replacement under this Warranty must
be borne by purchaser. This warranty is effective for the time period and subject to the conditions provided for in this policy.
For warranty service, find the nearest Authorized Service Dealer by contacting the place of purchase or Eastern Tools &
Equipment, Inc. THERE IS NO OTHER EXPRESSED WARRANTY. IMPLIED WARRANTIES, INCLUDING THOSE OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR FROM
PURCHASE, OR TO THE EXTENT PERMITED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED.
LIABILITY FOR CONSEQUENTIAL DAMAGES UNDER ANY AND ALL WARRANTIES ARE EXCLUDED TO THE
EXTENT EXCLUSION IS PERMITTED BY LAW. Some states do not allow limitations on how long an implied warranty
lasts, and some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation and
exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights, which vary
from state to state.

Eastern Tools & Equipment, Inc.
WARRANTY PERIOD***
ENGINES
DIESEL ENGINE

WITHIN U.S.A AND CANADA
CONSUMER
COMMERCIAL
USE
USA
1 year
1 year
or 1000 hours
or 1000 hours

OUTSIDE U.S.A. AND CANADA
CONSUMER
COMMERCIAL
USE
USE
1 year
1 year
or 1000 hours
or 1000 hours

About Your Product Warranty
Eastern Tools & Equipment, Inc. welcomes warranty repair and apologizes to you for being inconvenienced. Any Authorized
Service Dealer may perform warranty repairs. Most warranty repairs are handled routinely, but sometimes warranty service may
be inappropriate. For example, warranty would not apply if an engine is damaged because of misuse, lack of routine
maintenance, shipping, handling, warehousing and improper installation. Similarly, warranty is void if the serial number on the
engine has been removed or if the engine has been altered or modified. If a customer differs with the decision of the Service
Dealer, an investigation will be made to determine whether the warranty applies. Ask the Service Dealer to submit all supporting
facts to his Distributor or the factory for review. If the distributor or the factory decides that the claim is justified, the customer
will be fully reimbursed for those items that are defective. To avoid misunderstanding, which might occur between the customer
and the dealer, listed below are some of the causes of engine failure that the warranty does not cover.

Normal wear:
Engines and generators, like all mechanical devices, need periodic parts service and replacement to perform well. Warranty will
not cover repair when normal use has exhausted the life of a part of an engine.

Improper maintenance:
The life of an engine or your equipment depends upon the conditions under which it operates, and the care it receives. Some
applications, such as tillers, pumps, and rotary movers, are very often used in dusty or dirty conditions, which can cause what
appears to be premature, wear. Such wear, when caused by dirt, dust, spark pug cleaning grit, or other abrasive material that has
entered the engine because of improper maintenance is not covered by warranty.

Note: Please mail the above card to: Eastern Tools & Equipment, Inc.
4951 Commerce Dr.
Baldwin Park, CA 91706

https://capetillers.co.za

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