Subaru EX40 Parts Manual EP6516 Rev 06 12 User To The 31061a7a B23f 4734 Bfc4 8ce7411517b8

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PARTS
MANUAL
Models

EX40
ENGINES

PUB-EP6516
Rev. 04/14

Robin America, Inc.
905 Telser Road, Lake Zurich, IL 60047 • Phone: 847-540-7300 • Fax:847-438-5012
e-mail: sales@robinamerica.com • www.subarupower.com

© Copyright 2009 Robin America, Inc.

HOW TO USE THIS MANUAL
Robin engines are identified by MODEL, SPECIFICATION, and CODE NUMBER. For each
model there may be many different versions called specifications. Each specification will be
unique in some way. The difference may only be the paint color or it may have a different type
of PTO or some other significant difference.
In order the identify the correct service part number, it is important to confirm the specification and code numbers for your engine. The specification and code number together are
know as the PRODUCT NUMBER.
All Robin 4 cycle engines have a Product Number label similar to the label illustrated below.

The Product Number Label has a 15 digit alphanumeric string that consists of the
SPECIFICATION (SPEC) number (11 digits) and the CODE number (4 digits). Please
note the illustration below:

EX400

XXXX

SPEC NO. (11 digits)

CODE NO. (4 digits)

PRODUCT NO. (15 digits)

MANUAL LAYOUT
1

4
3

2

1

6

7

9

2

3
5
8

4

1. SECTION NAME

Parts are broadly classified according to their functions.
Refer to the Group Index (table of contents) for respective section name.

2. FIG. No.

The FIG. number indexes the reference and part numbers to the illustration. Figure numbers
that vary only in the tens place (i.e..: 700 and 710) are in a group of the same section
(i.e..:Electrical Device Group).

3. REF. No .

The Reference number identifies the part illustration with the corresponding part number in the
part list.

4. SUBASSEMBLY

SUBASSEMBLY parts of part assembly are listed below the assembly part. The subassembly
part reference number is indicated by the number led by "-" such as "-1", "-2".

5. PART NUMBER

It is the number assigned for sales unit. Use the PART No. when making an order.

6. DESCRIPTION

It is designation of the part.

7. QTY.

Quantity of each part used for each product.

8. REMARKS

This gives a distinctive feature and/or a supplementary comment for the type, the specification,
and the part concerned. It also shows part number(s) interchangeable for the part.

9. FROM-TO

This section shows the CODE No. to indicate the history of progress in which improved parts
have been introduced in the product. The FROM-TO CODE No. helps to identify PART No.
being employed in the product concerned. See the examples below:

2101- 2100

The part is used in the product irrespective of CODE No.
The part is used in the products with CODE No. of 2101 and after this number.
The part is used in the products with CODE No. of 2100 and before this number.

GROUP INDEX
Group Name

Page

CRANKCASE GROUP ............................................................................... 6
CRANKSHAFT GROUP ............................................................................. 8
INTAKE and EXHAUST GROUP .............................................................. 10
GOVERNOR GROUP .............................................................................. 14
COOLING and STARTING GROUP ......................................................... 16
FUEL, LUBRICANT GROUP .................................................................... 18
CARBURETOR GROUP .......................................................................... 20
ELECTRIC DEVICE GROUP .................................................................. 22
ACCESSORY GROUP ............................................................................. 24

INDEX OF DESCRIPTION SYMBOLS
SYMBOL
DESCRIPTION
AY ........................... ASSEMBLY
CP........................... COMPLETE
EX ........................... EXPORT (from Japan)
FIG.......................... FIGURE
FR. .......................... FRONT
" .............................. INCH
INCL. ...................... INCLUDE
~L............................ LITER
L= ........................... LENGTH (in. mm)
L.H. (LH) ................. LEFT-HAND SIDE
MECH ..................... MECHANICAL
NO (NON) ............... NONE
OPT......................... OPTIONAL
O.S. ........................ OVER SIZE

SYMBOL
DESCRIPTION
P= ........................... PITCH (in mm)
P.T.O. (PTO) ........... POWER TAKE OFF
REF. ........................ REFERENCE
R.H. (RH) ................ RIGHT HAND SIDE
RR. ......................... REAR
STD. ....................... STANDARD
SW .......................... SWITCH
T= ........................... THICKNESS (in mm)
UN .......................... UNIT
U.S.......................... UNDER SIZE
~V ........................... VOLTAGE
~W .......................... WATT
W/ ........................... WITH
W/O ........................ WITHOUT

SECTION 1

CRANKCASE GROUP

FIG. 100

610

70

20

28

27
26

60
620

690
680

710
631

630

250
10
260

280

75

210
270

30

50
230

40

240

220

45

700

90
300

EX40

80

-6-

08-09

SECTION 1

CRANKCASE GROUP

Ref.

Part Number

Description

10
20
26
27
28
30
40
45
50
60
70
75
80
90
210
220
230
240
250
260
270

20B-10102-11
20B-14202-03
132-07AA0-50
056-51000-50
263-35341-03
044-03500-90
060-03502-40
X60-01500-11
277-15011-03
010-50603-51
010-50802-90
044-00800-10
040-11400-30
021-11400-20
20B-11002-11
044-03500-90
060-03502-40
X60-01500-11
20B-45003-01
277-41901-03
279-63601-30
224-63601-03
021-32000-50
011-00803-40
20B-13001-01
20B-15001-03
011-01000-40
001-04083-50
20B-15501-01
20B-16001-03
031-00600-20
011-00600-20
20B-99001-07

Crankcase Cp
Valve Guide
Seal, intake valve
Clip
Retainer Plate
Oil Seal
Ball Bearing
Ball Bearing
Pipe Knock
Stud, intake
Stud, exhaust
Oil Seal
Plug
Gasket
Main Bearing Cover Cp
Oil Seal
Ball Bearing
Ball Bearing
Governor Gear Cp
Governor Sleeve
Oil Gauge Ay
Oil Gauge
Gasket
Flange Bolt
Cylinder Head Cp
Gasket, cylinder head
Flange Bolt
Flange Bolt
Rocker Cover Cp
Gasket, rocker cover
Dowel Pin
Flange Bolt
Gasket Set

280
300
610
620
630
631
680
690
700
710
960

EX40

Qty
1
2
1
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
8
1
1
4
2
1
1
2
4
1

-7-

Remarks

To-From

8157-8156

Fig.
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

08-09

SECTION 2

CRANKSHAFT GROUP

FIG. 200

310
320
360

370

350
380

70
10

390

EX40

-8-

08-09

SECTION 2

CRANKSHAFT GROUP

Ref.

Part Number

Description

10

20B-20901-01
20B-21201-01
20B-21001-01
005-32054-01
20B-22501-00
001-05084-00
263-23301-33
20B-23401-H3
20B-23403-H3
20B-23404-H3
20B-23501-07
20B-23502-07
20B-23503-07
056-52100-20
20B-24101-03

Crankshaft Cp
Crankshaft Cp
Crankshaft Cp
Woodruff Key
Connecting Rod Ay
Connecting Rod Bolt
Piston Pin
Piston
Piston
Piston
Piston Ring Set
Piston Ring Set
Piston Ring Set
Clip
Balancer Shaft

70
310
320
350
360
360
360
370
370
370
380
390

EX40

Qty

Remarks

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

1" Key
7/8" Taper
1" Pump

-9-

Std
Oversize 0.25mm
Oversize 0.50mm
Std
Oversize 0.25mm
Oversize 0.50mm

To-From

Fig.
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200

08-09

SECTION 3

INTAKE and EXHAUST GROUP

FIG. 300
310

320

350

361

365

315

225
241

340

231

317

80

370
210
240

90

230
290
60
220
70
95

170

25
150
27
160

37 35 34 38
10

EX40

163
166

- 10 -

08-09

SECTION 3

INTAKE and EXHAUST GROUP

Ref.

Part Number

Description

10
25
27
34
35
37
38
60
70
80
90
95
150
160
163
166
170
200
210
220
225
230
231
240
241
290
310
315
317
320
340
350
361
365
370

20B-31601-01
20B-35101-03
024-00700-20
005-19041-00
277-36401-03
20B-36501-03
277-38702-03
246-33611-03
246-33711-13
20B-33401-H3
20B-33501-H3
246-35501-03
20B-35601-H1
277-36911-03
277-37101-03
277-36902-03
277-36913-13
20B-35001-01
003-13060-00
20B-36101-00
20B-36102-10
014-90500-20
014-90500-20
017-00500-30
017-00500-30
011-00600-20
20B-30101-J2
20B-37001-01
015-00400-60
20B-34201-11
20B-35201-03
980-20082-80
011-00600-10
011-00803-20
267-37601-01

Camshaft Cp
Pin, camshaft
O ring
Pin, spring
Release lever
Clip
Return Spring
Valve Spring
Spring Retainer
Intake Valve
Exhaust Valve
Collet Valve
Timing Chain
Tentioner
Spring, tentioner
Pin, tentioner
Chain Guide
Pin, rocker
Clip
Rocker Arm Ay, intake
Rocker Arm Ay, exhaust
Adjust Screw
Adjust Screw
Nut
Nut
Flange Bolt
Muffler
Deflector Cp
Tapping Screw
Muffler Cover Cp
Gasket, muffler
Flange Nut
Flange Bolt
Flange Bolt
Spark Arrestor

EX40

Qty

Remarks

1
1
1
2
1
1
1
2
2
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
2
5
1
1

To-From

Fig.
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300

- 11 -

04-14

SECTION 3

INTAKE and EXHAUST GROUP

FIG. 310$

250
520

200

270
290

220
295

260

510

280

EX40

- 12 -

08-09

SECTION 3

INTAKE and EXHAUST GROUP

Ref.

Part Number

Description

510
510
200
220
250
250
254
260
270
280
290
295
520

20B-32611-H0
20B-32651-H0
20B-32630-H8
20B-32720-H8
20B-32640-H8
20B-32641-H8
20B-32680-H8
20B-32850-H8
20B-32650-H8
X85-11001-80
002-38060-00
001-04061-60
20B-32610-H7

Air Cleaner Ay
Air Cleaner Ay
Cleaner Body
Gasket, packing
Cover
Cover
Clip1
Cap
Bolt
Rubber Pipe, breather
Flange Nut
Flange Bolt
Element

EX40

Q1ty Remarks
1
1
1
1
1
1
2
1
1
1
2
1
1

- 13 -

To-From

Dual

Fig.
310A
310B
310A
310A&B
310A
310B
310B
310A
310A
310A
310A
310A
310A&B

04-14

SECTION 4

GOVERNOR GROUP

FIG. 400
450

340
80
40

345
311

310

30
10

355

480

70

60

360
485
50
370
90

435

396
490
395

436

20
50

EX40

- 14 -

08-09

SECTION 4

GOVERNOR GROUP

Ref.

Part Number

Description

10
20
30
40
50
60
70
80
90
310

20B-42301-03
20B-42201-13
20B-42701-01
20B-42801-13
003-13060-00
001-14062-50
018-60600-20
20B-42503-13
003-11080-00
20B-43301-01
20B-43351-03
011-60400-30
227-43501-13
227-45002-03
021-70600-30
004-31061-80
002-27060-00
277-43902-03
013-10500-30
20B-46001-11
20B-35903-03
002-35060-00
267-45101-03
011-00600-20

Governor Lever
Governor Shaft
Governor Rod
Rod Spring
Clip
Bolt and Washer
Nut
Governor Spring
Washer
Speed Control Lever Cp
Speed Control Lever
Bolt, swivel
Stop Plate
Spring Washer
Friction Washer
Screw, panhead
Nut
Clamp
Screw and Washer
Speed Control Bracket Cp
Gasket 3
Self Lock Nut
Return Spring
Flange Bolt

311
340
345
355
360
370
395
396
435
436
450
480
485

EX40

Qty
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1

- 15 -

Remarks

Std
Generator

To-From

Fig.
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400

08-09

SECTION 5

COOLING and STARTING GROUP

FIG. 500

220
707
705
20
706

210
80

18

60

40

16

10

15
17

61
81

EX40

- 16 -

08-09

SECTION 5

COOLING and STARTING GROUP

Ref.
490

Part Number
277-96107-03

Description
Label, hi-low

10
15
16
17
18
20
40
60
61
80
81
220
705
706

20B-51201-H1
20B-55101-02
010-00804-40
010-00804-50
002-38060-00
073-20054-70
001-04061-60
001-65081-20
20B-52702-H1
279-52711-11
011-00600-20
013-00602-81
KU3-11077-01
20B-73102-01

Blower Housing
Recoil Bracket Un
Bolt
Bolt
Flange Nut
Label, trademark
Flange Bolt
Bolt
Baffle 2, head
Baffle 1, case
Flange Bolt
Bolt and Washer Ay
Float C/U Cp11
Wire 2 Cp

EX40

Qty
1
1
1
2
2
4
1
5
1
1
1
3
4
1
1

- 17 -

Remarks

To-From

Fig.
400
500
500
500
500
500
500
500
500
500
500
500
500
500
500

08-09

SECTION 5

COOLING and STARTING GROUP

FIG. 520

-11
-8
-2

-10

-9

-3
-7
-6
-5

-1

-4
210

EX40

- 18 -

08-09

SECTION 5

COOLING and STARTING GROUP

Ref.

Part Number

Description

210
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11

20B-50301-00
20B-50145-08
261-50100-08
20B-50110-08
20B-50101-08
161-50150-08
227-50135-08
227-50131-08
277-50155-08
161-50125-08
20B-50120-08
20B-50150-08

Recoil Starter Ay
Starter Pulley
Starter Knob
Starter Rope
Set Screw
Ratchet Guide
Return Spring
Friction Spring
Spiral Spring
Ratchet
Reel
Starter Case

EX40

Qty
1
1
1
1
1
1
2
1
1
2
1
1

- 19 -

Remarks

To-From

Fig.
520
520
520
520
520
520
520
520
520
520
520
520

08-09

SECTION 6

FUEL, LUBRICATION GROUP

FIG. 600
30

40
23

10

20

52

59
60

63
53
51
54

58
50

56
55
57

210

560

550

540

EX40

- 20 -

08-09

SECTION 6

FUEL, LUBRICATION GROUP

Ref.
707

Part
Number
004-36041-20

Description
Screw and Washer Ay

10
20
23
30
40
50
51
52
53
54
55
56
57
58
59
60
63
540
550

20B-60102-01
073-20051-81
20B-95101-03
X43-04401-61
X64-13600-10
X64-20122-00
267-62604-11
X85-10614-91
X56-11100-60
056-11200-40
20B-62601-01
085-10620-90
056-11000-30
011-00600-20
056-81200-10
002-38080-00
011-00802-50
20B-32901-J1
20B-35901-H3

Fuel Tank Cp
Label, warning
Label, model
Fuel Tank Cap Cp
Fuel Filter
Fuel Strainer Ay
Fuel Pipe Cp
Rubber Pipe
Hose Clamp
Hose Clamp
Fuel Pipe Cp
Rubber Pipe
Hose Clamp
Flange Bolt
Clamp
Flange Nut
Flange Bolt
Insulator Cp
Gasket 1, insulator

EX40

Qty
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
2
2
1
1

- 21 -

Remarks

fuel tank strainer
fuel pipe, strainer
fuel pipe, tank
strainer, carb
fuel pipe

To-From

Fig.
500
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600

08-09

SECTION 6

FUEL, LUBRICATION GROUP

FIG. 610

EX40

- 22 -

08-09

SECTION 6

FUEL, LUBRICATION GROUP

Ref.
560

Part
Number Description
20B-35902-H3
Gasket 2, insulator

210

20B-62301-00

EX40

Carburetor Ay

Qty
1
1

- 23 -

Remarks
Std

To-From

Fig.
600
640

08-09

SECTION 7

ELECTRIC DEVICE GROUP

FIG. 700

785
16
15
780
10
12
20
35

30

100
11

50
385

775
770
110

733
384
740
700

EX40

- 24 -

08-09

SECTION 7

ELECTRIC DEVICE GROUP

Ref.

Part Number
20B-62302-00

Description
Carburetor Ay

10

20B-79230-H1
20B-79241-H1
20B-79430-H1
20B-79301-H1
20B-54101-H3
018-01800-10
20B-71002-03
001-14062-50
004-35062-00
20B-73101-01
065-01401-50
065-50003-11
056-60002-50
011-00600-10
279-76301-51
277-75801-03
013-00602-60
20B-75501-03
015-20600-50
214-79006-01
011-00600-10

Flywheel Cp
Flywheel Cp
Ignition Coil
Charge Coil
Cooling Blower
Flange Nut
Ring Gear
Bolt and Washer Ay
Screw and Washer Ay
Wire 1
Spark Plug
Spark Plug Cap
Clamp
Flange Bolt
Oil Sensor
Shield Plate
Bolt and Washer
Wire Clamp
Tapping Bolt
Clamp Cp
Flange Bolt

11
12
15
16
20
30
35
50
100
110
384
385
700
733
740
770
775
780
785

EX40

Qty
Remarks
1
Generator
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
2
1
1
1
1

- 25 -

Std
15 Watt
15 Watt

stop wire
clamp

To-From

Fig.
640
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700

08-09

SECTION 7

ELECTRIC DEVICE GROUP - ELECTRIC STARTER

FIG. 710

120

13
19
20

12
18
6

4
3
5

17

10
11

2
1

15
9
14

8

16
7

EX40

- 26 -

08-09

SECTION 7

ELECTRIC DEVICE GROUP - ELECTRIC STARTER

Ref.

Part Number

Description

120
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20

279-70502-00
209-70550-08
209-70551-08
209-70545-08
209-70530-08
209-70552-08
209-70554-08
209-70521-08
279-70550-08
209-70511-08
209-70505-18
209-70510-08
209-70525-08
279-70515-18
234-70555-08
209-70557-18
209-70558-08
949-29970-02
209-70560-08
107-70652-08
211-70584-08

Starting Motor Ay
Yoke Cp
Brush
Brush Spring
Brush Holder
Insulator
Armature Ay
Over Running Clutch Cp
Housing Cp
Bush
Frame Cp
Bush
Lever
Magnet Switch Cp
Pinion Stopper
Snap Ring
Through Bolt
Nut
Nut
Spring Washer
Nut

EX40

Qty
1
1
4
4
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1

- 27 -

Remarks

To-From

Fig.
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710

08-09

SECTION 7

ELECTRIC DEVICE GROUP - CONTROL BOX

FIG. 720

387
200
210
388
386

190
130

55
220

385

131

335
260

230

385

387

240

EX40

- 28 -

08-09

SECTION 7
Ref.
55
130
131
190
200
210
220
-1
230
240
260
335
385
385
386
387
388

EX40

ELECTRIC DEVICE GROUP - CONTROL BOX

Part Number Description
277-73105-01 Wire 5
214-79007-01 Bolt, starter
003-10080-00 Washer
073-20044-80 Label, battery
20B-75101-01 Control Box Cp
073-20044-70 Label, starter switch
066-00003-30 Switch Ay
066-00099-80 Key
277-71401-01 Diode Rectifier Cp
044-35061-00 Screw and Washer Ay
277-73103-11 Wire 3 Cp
277-73104-01 Wire 4 Cp
056-30000-60 Wire Band
20B-76511-01 Bracket Cp, SEL
056-60002-50 Clamp, sel
011-00600-20 Flange Bolt
013-50600-10 Bolt and Washer Ay

Qty
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
3
2

- 29 -

Remarks

To-From

Fig.
720
720
720
720
720
720
720
720
720
720
720
720
720
720
720
720
720

08-09

SECTION 9

ACCESSORY GROUP

FIG. 900

EX40

- 30 -

08-09

SECTION 9

ACCESSORY GROUP

Ref.

Part Number

Description

10

224-90303-00

Accessory Tool Kit

EX40

Qty
1

- 31 -

Remarks

To-From

Fig.
900

08-09

PRINTED IN THE USA

Robin America, Inc

905 TFMTFS3PBEt-BLF;VSJDI *- 60047
1IPOFt'BY
FNBJMTBMFT!TVCBSVQPXFSDPNtXXXTVCBSVQPXFS.com



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