Kawasaki_fa76_fa130_fa210_shop_manual Kawasaki Fa76 Fa130 Fa210 Shop Manual

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4=stroke air=cooledgasoline engine

CONTENTS
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.

General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dimensional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Setting Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Torque Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Standard Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

A. GENERAL SPECIFICATIONS
FA76D

-

-

*Air cooling:
Large capacity, curved vane blower casting, integrated
with flywheel. Air passes through deep fins to maintain
optimum operating temperature of engine.
*Ignition:
Magneto with waterproof molded ignition coil and
dustproof breaker point enclosure.
Breaker system standard. (Electronic ignition system
available as optional specification.)
*Lubrication: Splash type.
"Carburetor:
Pulse pump type; with idle mixture adjustment.
Float type; anti-erosion aluminum alloy, with idle mixture adjustment and fuel shut off valve.
*Air cleaner:
Semi-dry type, washable polyurethane element with
nylon brush.
*Fuel tank:
Sheet metal for pulse pump carburetor model.
Polyethylene for Float carburetor model.
"Governor:
Mechanical fly-weight type, running in crankcase oil.
*Governor control:
Adjustable speed control. Wire joint and outer wire
clamp are optional for remote speed control.
*Cylinder and crankcase:
One piece hypereutectic aluminum-silicon alloy die
casting with plateau honing.
*Piston:
Hard-chrome plated aluminum alloy.
*Piston rings:
Two compression rings including silicon carbide (on an
iron base) plated top ring. One oil control ring.
*Connecting rod:
I-beam cross section, heat treated aluminum alloy,
with large bearings.

-

Bore and stroke
Piston displacement
Compression ratio
Maximum output
Maximum torque
Fuel consumption ratio
Fuel tank capacity
Fuel
Oil volume: crankcase max.
Oil volume: crankcase min.
Lubricating oil
Oil fill and drain
Ignition timing
Spark plug
Permissible inclination of
engine for continuous
operation without any
lubrication problem.
Idle speed set, no load
Max. speed set, no load
Dry weight (S.T.D. set-up)

*Crankshaft:
Heat treated ductile iron integrated with counterbalance weights and camshaft drive gear. Induction
hardened crankpin and main journals.
*Main bearings:
Durable bush type, lead bronze sintered alloy plain
bearings with steel back metal.
*Valves:
Forged 2 1-4N austenitic stainless steel exhaust valve.
Forged heat-resisting steel intake valve.
*Valve seats:
Exhaust; Sintered alloy insert (Co-W-Ni-Cr-Mo) o n an
iron base.
Intake; Sintered alloy insert (Cu-Mo) on an iron
base.
*Valve guides:
Exhaust; .Sintered alloy insert (Cu-P-Sn) on an iron
base.
Intake; Directly borne by cylinder/crankcase. Diecasted hypereutectic aluminum-silicon alloy,
machined.
*Valve tappets:
Wear resisting stamp-forged steel, hardened and
ground.
*Breather:
Vacuum type, vented through air cleaner to prevent oil
spill.
"Muffler:
Sheet metal painted with heat-resisting paint, effective
noise suppression. (Optional parts available.)
*Starter:
Recoil starter with safety cover as standard. (Optional
parts available.)
*Direction of rotation:
'~ounterclockwise,viewed from power take-off side.
*Finish:
Anti-rust, painted.

Direct Drive, Pulse Pump Carburetor
Direct Drive, Float Carburetor
52 x 3 6 mm [2.05 x 1.42 in]
76 cc [4.66 cu. in]
6.4 : 1
1.7 HP/4000 rpm [SAE J607al
0.32 kgml3200 rpm [2.31 ft-lbs/3200 rpm]
330 gr/HP, Hr [0.73 IbslHP, Hr]
1.1 5Q [I .22 Qt US]
1.7Q [1.8 Qt US]
Regular gasoline
3 2 0 cc [0.678 Pt US]
200 cc [0.42 Pt US]
A.P.I. Grade: SC, SD, S E class
SAE #20 -Winter, SAE #30 - Summer
Dual (carb. side and opposite carb.)
Fixed 23" B.T.D.C
1 4 m m NGK BM-6A
Angled forward (carb. side up)
20'
Angled backward (carb. side down) 20"
Angled P.T.O. shaft (towards both) 20°
1 6 0 0 rpm (crankshaft)
4000 rpm (crankshaft)
7.3 kg [16.1 Ibs]

FA130D
*Air cooling:
Large capacity, curved vane blower casting, integrated
with flywheel. Air passes through deep fins to maintain
optimum operating temperature of engine.
*Ignition:
Magneto with waterproof molded ignition coil and
dust-proof breaker point enclosure.
Breaker system standard. (Electronic ignition system
available as optional specification.)
*Lubrication:
Splash type.
*Carburetor:
Pulse pump type, with idle mixture adjustment.
*Air cleaner:
Semi-dry type, washable polyurethane element with
nylon brush.
*Fuel tank:
Sheet metal.
*Governor:
Mechanical fly-weight ty,pe, running in crankcase oil.
"Governor control:
Adjustable speed control. Remote speed control joint
optional.
*Cylinder and crankcase:
One piece hypereutectic aluminum-silicon alloy diecasting with plateau-honing.
"Piston:
Hard-chrome plated aluminum alloy.
*Piston rings:
Two compression rings including silicon carbide (on an
iron base) plated top ring. One oil control ring.
*Connecting rod:
I-beam cross section, heat treated aluminum alloy,
with large bearings.
*Crankshaft:
Heat treated ductile iron integrated with counter

Bore and stroke
Piston displacement
Compression ratio
Maximum output
Maximum Torque
Fuel consumption ratio
Fuel tank capacity
Fuel
Oil volume: crankcase max.
Oil volume: crankcase min.
Lubricating oil
Oil fill and drain
Ignition timing
Spark plug
Permissible inclination of
engine for continuous
operation without any
lubrication problem.
Idle speed set, no load
Max. speed set, no load
Dry weight (S.T.D. set up)

balance weights and camshaft drive gear. Induction
hardened crankpin and main journals.
*Main bearings:
P.T.O. side, ball bearing. Magneto side, lead bronze
sintered alloy plain bearing with steel back metal.
*Valves:
Forged 21 -4N austenitic sizinless steel exhaust valve.
Forged heat-resisting steel intake valve.
*Valve seats:
Exhaust; Sintered alloy insert (Co-W-Ni-Cr-Mo) o n an
iron base.
Intake; Sintered alloy insert (Cu-Mo) on an iron
base.
"Valve guides:
Exhaust; Sintered alloy insert (Cu-P-Sn) o n an iron
base.
Intake; Directly borne by cylinder/crankcase. Diecasted hypereutectic aluminum-silicon alloy,
machined.
*Valve tappets:
Wear resisting stamp-forged steel, hardened and
ground.
*Breather:
Vacuum type, vented through air cleaner to prevent oil
spill.
"Muffler:
Sheet metal painted with heat-resisting paint, effective noise suppression. (Optional parts available.)
"Starter:
Recoil starter with safety cover as standard. (Optional
parts available)
*Direction of rotation:
Counterclockwise, viewed from power take-off side.
"Finish:
Anti-rust, painted.

Direct Drive, Pulse Pump Carburetor
Direct Drive, Float Carburetor
6 2 x 4 3 mm [2.44 x 1.69 in]
129 cc [7.92 cu. in]
6.4 : 1
3.1 HP/4000 rpm [SAE J607al
0.62 kgm/3000 rpm [4.48 ft-lbs/3000 rpm]
3 10 gr/HP, Hr [0.68 Ibs/HP, Hr]
2.7Q [2.8 Qt US]
Regular gasoline
500 cc [1.06 Pt US]
3 0 0 cc [0.63 Pt US]
A.P.I. Grade: SC. SD. SE class
SAE
- #20
, , - _ -Winter,
. . ., SAE #30 - Summer
Dual (carb. side and opposite carb.)
Fixed 23" B.T.D.C.
1 4 m m , NGK BM-6A
A --1-2 c
Angled
forward2 (carb.
arb. side up)
20'
Angled backward (carb. side down) 20°
Angled P.T.O. shaft
ft (towards both) 20"
(-

1600 rpm (crankshaft)
4000 rpm (crankshaft)
10 kg [22 Ibs]
11.5 kg [25 lbs]

-

-

*Air cooling:
Large capacity, curved vane blower casting, integrated
with flywheel. Air passes through deep fins to maintain
optimum correct operating temperature of engine.
"Ignition:
Magneto with waterproof molded ignition coil and
dustproof breaker point enclosure.
Breaker system standard. (Electronic ignition system
available as optional specification.)
*Lubrication:
Splash type.
"Carburetor:
Pulse pump type, with idle mixture adjustment.
*Air cleaner:
Semi-dry type, washable polyurethane element with
nylon brush.
*Fuel tank:
Sheet metal.
*Governor:
Mechanical fly-weight type, running in crankcase oil.
*Governor control:
Adjustable speed control. Remote speed control joint
optional.
"Cylinder and crank case:
One piece hypereutectic aluminum-silicon alloy diecasting with plateau honing.
*Piston:
Hard-chrome plated aluminum alloy.
*Piston rings:
Two compression rings including silicon carbide (on an
iron base) plated t o p ring. One oil control ring.
*Connecting rod:
I-beam cross section, heat treated aluminum alloy,
with large bearings.
"Crankshaft:
Heat treated ductile iron integrated with counter-

1

I

Bore and stroke
Piston displacement
Compression ratio
Maximum output
Maximum Torque
Fuel consumption ratio
Fuel tank capacity
Fuel
Oil volume: crankcase max.
Oil volume: crankcase min.
Lubricating oil

I

1
L

Oil fill and drain
Ignition timing
Spark plug
Permissible inclination of
engine for continuous
operation without any
lubrication ~ r o b l e n i .
Idle speed set, no load
Max. speed set, no load
Dry weight (S.T.D. set up)

balance weights and camshaft drive gear. Induction
hardened crankpin, main journals and output shaft.
*Main bearings:
P.T.O. side, ball bearing. Magneto side, lead bronze
sintered alloy plain bearing with steel back metal.
*Valves:
Forged 21-4N austenitic stainless steel exhaust valve.
Forged heat-resisting steel intake valve.
"Valve seats:
Exhaust; Sintered alloy insert (Co-W-Ni-Cr-Mo) on an
iron base.
Intake; Sintered alloy insert (Cu-Mo) on an iron
base.
*Valve guides:
Exhaust; Sintered alloy insert (Cu-P-Sn) on an iron
base.
Intake; Directly borne by cylinder/crankcase. Die- casted hypereutectic aluminum-silicon alloy,
machined.
*Valve tappets:
Wear resisting stamp-forged steel, hardened and
ground.
"Breather:
Vacuum type, vented through air cleaner t o prevent oil
spill.
"Muffler:
Sheet metal painted with heat-resisting paint, effective
noise suppression. (Optional parts available.)
*Starter:
Recoil starter with safety cover as standard. (Optional
parts available.)
*Direction of rotation:
Counterclockwise, viewed from power take-off side.
*Finish:
,Anti-rust, painted.

I

Direct Drive, Pulse Pump Carburetor
Direct Drive, Float Carburetor
72 x 51 mm [2.83 x 2.01 in]
207 cc 112.67 cu. in]
6.4 : 1
5.2 W / 4 0 0 0 rpm [SAE J607a1
1.09 kgm/2600 rpm [7.88 ft-lbs/2600 rpm]
3 1 0 gr/HP, Hr [0.68 Ibs/HP, Hr]
2.7Q [2.8 Qt US]
Regular gasoline
6 0 0 cc [1.27 Pt US]
3 50 cc [0.74 Pt US]
A.P.I. Grade: SC, SD, S E class
SAE #20 - Winter, SAE #30 - Summer
Dual (carb. side and opposite carb.)
Fixed 23" B.T.D.C.
1 4 m m NGK BM - 6A

-~- - -

-

I

Angled forward (carb. side up)
20'
Angled backward (carb. side down) 20"
Angled P.T.O. shaft (towards both) 20"
1600 rpm (crankshaft)
4000 rpm (crankshaft)
1 3 kg [28.7 Ibs]

3

B. PERFORMANCE CURVES

gr /Hp Hr

IlbriHp Hrl

R P.M. A T POWER TAKE-OFF SHAFT

R.P M. AT POWER TAKE-OFF SHAFT

5
Kg-m

Ifl-lbr)
1 1
17.961

4
16.511

a.
I
C

+
3
P

3

griHP Hr
1lbrlHP.Hr)
400
( 0 881
2
10.661

2000
3000
R.P.M. A T POWER TAKE.OFF SHAFT

4000

Horsepower is measured in accordance with the appropriate
SAE test procedures.
Power curves are corrected t o standard conditions of
atmospheric pressure at sea level and temperature of 6 0 " ~
and are developed from laboratory test engines equipped
with standard air cleaner and muffler.
The Maximum B.H.P. curve represents laboratory test
engines equipped t o operate at full performance.
Production engines will develop 95% of the Maximum
B.H.P. when tested after run-in t o reduce friction and after
clean out of t h e combustion chamber, with valves, carburetor and ignition system adjusted t o laboratory standards.
Engine power will decrease 3 112% for each 1,00Oft,
above sea level and 1% for each 10°F above standard temperature of 60°F. For practical operation B.H.P. load and
speed should be within the limits shown b y the recommended Maximum B.H.P. Complete details of installations
requiring operation at other than recommended speeds
should be referred t o factory for approval.

C. RIMENSlONAL SPECIFICATIONS
Pulse pump model

Float model

Pulse pump model

Float model

t-

425 (1694)

Pulse pump model

Float model

R. CONSTRUCTION
Main Parts

Carburetor Construction
-*

Pulse Pump Type
(FA76, FA130,FA210)

Pulse pump model

/pilot outlet
Inlet check valve

Outlet check valve

\ slowair-jet
Main nozzle

*---

Fuel
Air

Float Type

(FA76, FA210)

Throttle valve

Fuel cock

Pilot outlet

Air vent (Gate-type outer vent)

Fioat

*---

Fuel
Air

Float Type

(FA130)

Pilot outlet

1

Throttle valve

Ir\

\

Fuel cock

Choke valve

d-7

*---

Fuel
Air

E. DISASSEMBLY
1.

6.

Draining engine oil

Governor arm
6-1. Loosen the governor arm nut.
6-2. Take the governor arm off the governor shaft.
and then remove the governor link, link spring
and governor spring from the governor arm.
6-3. Remove the other end of the governor link and
link spring from the carburetor, and remove the
other end of the governor spring from the speed
control lever.

Remove drain-plug and drain off engine oil.
In general, drain off the oil after the engine has
been stopped and the oil is still warm.
There are two drain plugs, one on the carburetor
side and the other one on the opposite side, either
of which can be used for draining the oil.
Check for dirt and foreign matter in the oil. If any
foreign matter is found, inspect the following parts
during disassembly for any wear or damage:
piston. piston rings, cylinder, con-rod, bearings,
crank-pin, crankshaft and camshaft journals.

-EmF_n&rr-W

1 0 rnm spanner.

-i-

10 m m spanner.

2.

Oil-gauge
These is an oil-gauge located o n the carburetor side
al:d on the opposite side. Remove both of them.

3.

Output-shaft pulley
If the pulley is o n the output shaft, remove it at this
point

4.

7.

R-r,love the air-cleaner from the carburetor.
m Inspect the gasket for any damage, and if necessary replace it with a new one when reassembling.

5.

Carburetor
e l s e pump model) Remove the carburetor nuts and
take off the carburetor, two gaskets and insulator.
Inspect the gaskets for any damage, and if necessary replace them with new ones when reassembling.

Air-cleaner

i;i;el-tank

10 m m spanner.

!,'?rrlse pump model) Remove the fuel-tank from the
buretor and crankcase.
* l n s ~ e c tthe gasket for any damage, and if neces5ar.y replace it with a new one when reassembling.
FA76: Screwdriver. 10 rnm spanner.
FA130, FA210: Screwdriver. 13 mm spanner.

(Float model) Remove the inlet pipe from the
cylinder.

8.

(Float model) After removing the center clamp for
the fuel pipe except FA76, pull the fuel pipe off the
carburetor and insert a 6 mm dia. bolt in the fuel pipe
t o prevent fuel flowing out. Then remove the four
bolts holding the file1 tank in place and remove the
fue! tank from the engine. Also remove the lower
tank bracket from the crankcase.
10 mm spanner.

Speed control plate assembly and breather
cover
Remove the control plate assembly and breather
cover from the crankcase.
If the gasket is damaged, replace it with a new one
during reassembly.
10 rnm box spanner.

-

1 0 m m box spanner.

.

9.

Fan housing

1 1 . Cylinder head and cylinder head cover

Remove the fan housing from the crankcase and
cylinder head. (It is not necessary to remove the
recoil starter from the fan housing.)
For this operation, disconnect the wire going to
the stop-switch.

-

10 mm spanner.

11-1. Take out the sparkplug.
Check the sparkplug gap, and look for any
burning or carbon build-up on the electrodes, and replace the plug with a new one
if necessary. or clean it and adjust it before
re-using it.
11-2. Evenly loosen the cylinder head bolts in the
same order as specified in the assembly instruction, and remove the cylinder head and cylinder
head cover. Follow the order shown in the
photo.
FA76: 10 mm spanner.
FA130, FA21 0: 13 m,,i spanner.
-

sq@€f

10. Flywheel
10-1. Loosen the nut by turning it counter-clockwise
and take it off.
Wedge a'piece of wood against the vanes of
the flywheel to stop it from turning.
FA76: 17 mm box spanner (plug-wrench).
FA130, FA210: 19 mm box spanner (plug-wrench).

1

10-2. Use a pulley puller to remove the flywheel.
10-3. Pull the cap off the sparkplug.
10-4. Take off the contact breaker cover and remove
the ignition coil. the contact breaker and the
condenser.
Take care not t o damage the wires.
Pulley puller

Inspect for combustion gas 1e:tk:ipe aild m y
related gasket damage. if there is r.ny sip., of
such leakage, take care when reassernb!!in:7, to
tighten the bolts evenly to rhc speiified
torque. Replace the gaskc; if it is dainaged.
Inspect the combustion chamber for carbon
build-up, and remove any such build-up
prior to reassembly.

12. Muffler
Loosen the nuts and reniove the muffler
._

L,
1

-;

,J:

;<

-..-

.-7-

-

E-9

I

8 mm Spanner

FA76: 10 rnm spanner
FA130, FA210: 13 mm spanner

7

.

9"
Screwdriver.

--

-

13. Valves
13-1. Use screwdrivers to remove the retainers.
Screwdriver.

13-2. Remove the valves from the cylinder.

Check that both valves are seating properly.
If necessary, reface the valve seats.
Inspect the valves for any damage, and
replace any valve that is damaged. Also
check the stems carefully.
Remove any carbon build-up on the valves.

Take care not to damage the oil seal. Check
whether this oil seal has been damaged
during crankcase removal, and if so replace it
with a new one during reassembly.
Check the governor assembly in the crankcase cover for any wear or malfunction.
- If the governor gear or governor weight
show any sign of damage, remove the
governor gear assembly from the cover,
take out the pin and remove the weight
from the gear. Replace any damaged parts
for reassembly. To remove the governor
gear, grip the gear section firmly and pull
it off straight along its shaft.

-

-

Screwdriver.

Remove the governor sleeve if it is worn
and replace it for reassembly. Only the
sleeve needs to be removed. The photo
shows the assembly after removal.
Remove it by pressing the tip of a
screwdriver against the arrowed part.

14. Crankcase cover
14-1. Evenly loosen the crankcase cover bolts In the
same order as for assembly, and take out all the
bolts. Loosen the bolts in the order shown in
the photo.
10 m m b o x spanner.

-

14-2. Use a wooden (or plastic) hammer to gently tap
the crankcase cover loose, and remove it from
the crankcase. Do not try to prise it off by
force.

Do not remove the governor gear except
when necessary. If it is removed even
once, replace it with a new one for
reassembly.

Check for wear to the governor tip. If it is
worn, replace with a new one when reasse~nbling.

Wooden (or plastic) hammer.

I
[/bovernor

E-21

tip /

t

4

I

i

-

Evenly loosen the t w bolts.
Remove the con-rod cap, splasher and conrod lock together

15. Camshaft, tappet and governor tip
15-1. Remove the camshaft from the crankcase

Inspect the cams and journals for any wear,
and replace camshaft if necessary when
reassembling.
(Refer to Settings Table)
Inspect the camshaft bearings for wear.
(Refer to Settings Table)
15-2. Remove the tappets from the crankcase.

17. Crankshaft
Using a. wooden (or plastic) hammer to gently tap the
end of the crankshaft on the magneto side, remove
the crankshaft.

1- A

,

3

*
1 Wooden (plastic) hammer.

E-23

-

After removing the tappets, make sure not
to mix up the intake and exhaust sides, so
they can be refitted in their original positions.
Check for any damage to tappet stems and
faces, and replace if necessary when reassembling.
15-3. Withdraw the snap-pin and remove the governor
tip.

Carefully ease the con-rod big-end free of the
crankshaft by tapping it very carefully with the
wooden (or plastic) hammer.
Take care not to damage the oil seal.
With pump shaft models, take care not to lose a
shim o n the side of the crank gear.

Thin nosed plier.

18. Piston (with con-rod)
Withdraw the piston (with con-rod) from the cylinder
by gently tapping the piston crown with a wooden
(or plastic) hammer.

Wooden (plastic) hammer.

16. Con-rod cap (big-end disassembly)
16-1. Bend down the con-rod lock.
16-2. Loosen and remove the con-rod bolts.

L

FA76. Hammer, Screwdr~ver
8 mm box spanner ,
FA130, F A 2 1 0 Hammer.
Screwdrver
1 0 mm box spanner

h8.
f

1

Take care not to damage the cylinder.
Check the degree of cylinder wear. (Refer to the
Settings Table for wear limits.)
Align the con-rod cap with the con-rod big-end
and check the big-end bearing for damage; that is,
look for any scoring on the crankpin. If there is
any scoring, a new con-rod and crankshaft should
be used for reassembly.

15

IF. ASSEMBLY
1.

Crankcase cover

Crankshaft bearing (when bearing is replaces)

F - -

1-1. lnsert the plain bearing into the crankcase.
L

Bear~ngd r ~ v e r .

v r
F .
,

Oil seal

rr

FA76
Crankcase cover side (PTO side)
1-3. Fit the crankcase and crankcase cover oil seals.
The oil seals should be facing the way shown
. i n the diagrams. The oil seal should be
pressed right in, as shown.

Oil seal
Crankcase

Direction of bearing
instauation

2.

0

Bearing inset
lmrn
Plain bearing

pa

Ak

Governor gear assembly (when this has been
disassembled)
2-1.Fit the governor weight onto the governor gear
with the pin.

II I

,

u

Crankcase side
(Magneto side)

Align the oil groove with the hole in the
plain bearing.
The direction of the plain bearing groove
must be as shown in the photo.
The bearing should be pressed in 1 m m ,
as shown in the dia,oram.

1-2. Insert the ball bearing into the crankcase cover.
Insert the plain bearing into the crankcase
cover.
Align the oil groove with the hole in the
plain bearing.
The direction of the plain bearing groove
must be as shown in the photo.
The bearing should be pressed in 1 mm,
as shown in the diagram.

1

'2

F-4

If a governor gear has been removed, always
use a new one for reassembly.
Push the pins right in so it is against the
shaped projection (photo, part A) on the
governor gear.
2-2. Fit the governor sleeve. Use a screwdriver to
press the two tongued parts of the sleeve into
the groove of the governor gear.

-

Screwdr~ver.

L

L

2-3.Put the thrust washer on the governor gear
shaft, and then press the governor assembly
well on to the shaft.
Ball

-

3.

Governor tip

-A-

Put the washer shown in the diagram on the governor
tip.
Insert the governor tip into the crankcase from the
inside, and clip the snap-pin firmly.

-

Gasket surface

---B

Shim thickness

Snap pin

-

cr
-

4
,

.

.

Shims: t=1.0, t=1.2, t=1.4, t=1.6
Use one of these four shims.

F-7

5.

Piston and con-rod
5-1. Fit the piston rings (the oil ring, second ring
and top ring) in the correct grooves in the
piston in accordance with the following procedure.

T

A Top ring 7/]

=Second

%-

ring=

Oil ring

Ring mark"RU

4.

~-

Crankshaft
Insert the crankshaft into the crankcase

Take care n o t to put a ring in the igoove.
Have the side of each ring marked
facing upwards.
5-2. At this point, fit the snap-ring on just one :i:iz
of the piston.
5-3. Position the con-rod small-end on the pisto11. so
that the "M" mark on the piston and the
"Made In Japan" mark o n the con-rod are on
the same side. Then insert the piston pin and
put the snap-ring on the other end of the pin.

First coat the crankshaft journals, bearings and oil
seal sections with fresh oil.

-

Take care not t o damage the oil seals.
(Pump shaft model (Shaft Code No. 06 & 07))
No shim adjustment is required on model FA76 in
which both ends of crankshaft are supported by
plain bearings.
RepIace a shim on the end of the crank gear.
However, if the crankshaft o r the crankcase has
been replaced by a new one, measure the axial
play and select the type of shim accordingly.
Axial play is not t o exceed 0.3 mm.
Use one of the shims (which are 1.O, 1.2, 1.4 or
1.6 mm in thickness)
T o determine shim thickness: Measure A and B,
then the required thickness "t" is that which
provides
O
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