Subaru EX40 user guide

PARTS
MANUAL

Models

EX40
ENGINES

PUB-EP6516
Rev. 04/14

Robin America, Inc.

905 Telser Road, Lake Zurich, IL 60047 • Phone: [phone] • Fax:[phone]

e-mail: [e-mail] • www.subarupower.com

© Copyright 2009 Robin America, Inc.

HOW TO USE THIS MANUAL

Robin engines are identifi ed by MODEL, SPECIFICATION, and CODE NUMBER. For each
model there may be many different versions called specifi cations. Each specifi cation will be
unique in some way . The dif ference may only be the paint color or it may have a different type
of PTO or some other signifi cant difference.

In order the identify the correct service part number, it is important to confi rm the specifi ca-
tion and code numbers for your engine. The specifi cation 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:

E X 4 0 0

SPEC NO. (11 digits) CODE NO. (4 digits)

PRODUCT NO. (15 digits)

X X X X

MANUAL LAYOUT

1

2

1

6

4

3

7

9

2

3

5
4

8

1. SECTION NAME Parts are broadly classifi ed 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 identifi es 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 specifi cation,

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:

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

- 2100 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 ...........................VOLT AGE

~W ..........................WA TT

W/ ...........................WITH

W/O ........................WITHOUT

SECTION 1 CRANKCASE GROUP

FIG. 100

620

631

70

610

20

27

630

28

26

60

690

680

710

270

280

220

250

210

300

260

240

230

45

40

50

75

10

30

700

90

80

EX40 - 6 - 08-09

SECTION 1 CRANKCASE GROUP

Ref. Part Number Description Qty Remarks To-From Fig.

10 20B-10102-11 Crankcase Cp 1 100
20 20B-14202-03 Valve Guide 2 100
26 132-07AA0-50 Seal, intake valve 1 100
27 056-51000-50 Clip 1 100
28 263-35341-03 Retainer Plate 1 100
30 044-03500-90 Oil Seal 1 100
40 060-03502-40 Ball Bearing 1 100
45 X60-01500-11 Ball Bearing 1 100
50 277-15011-03 Pipe Knock 2 100
60 010-50603-51 Stud, intake 2 100
70 010-50802-90 Stud, exhaust 2 100
75 044-00800-10 Oil Seal 1 100
80 040-11400-30 Plug 1 100
90 021-11400-20 Gasket 1 100
210 20B-11002-11 Main Bearing Cover Cp 1 100
220 044-03500-90 Oil Seal 1 100
230 060-03502-40 Ball Bearing 1 100
240 X60-01500-11 Ball Bearing 1 100
250 20B-45003-01 Governor Gear Cp 1 100
260 277-41901-03 Governor Sleeve 1 100
270 279-63601-30 Oil Gauge Ay 1 8157- 100
224-63601-03 Oil Gauge 1 -8156 100
280 021-32000-50 Gasket 1 100
300 011-00803-40 Flange Bolt 8 100
610 20B-13001-01 Cylinder Head Cp 1 100
620 20B-15001-03 Gasket, cylinder head 1 100
630 011-01000-40 Flange Bolt 4 100
631 001-04083-50 Flange Bolt 2 100
680 20B-15501-01 Rocker Cover Cp 1 100
690 20B-16001-03 Gasket, rocker cover 1 100
700 031-00600-20 Dowel Pin 2 100
710 011-00600-20 Flange Bolt 4 100
960 20B-99001-07 Gasket Set 1 100

EX40 - 7 - 08-09

SECTION 2 CRANKSHAFT GROUP

FIG. 200

310

320

10

380

350

70

360

390

370

EX40 - 8 - 08-09

SECTION 2 CRANKSHAFT GROUP

Ref. Part Number Description Qty Remarks To-From Fig.

10 20B-20901-01 Crankshaft Cp 1 1" Key 200
20B-21201-01 Crankshaft Cp 1 7/8" Taper 200
20B-21001-01 Crankshaft Cp 1 1" Pump 200
70 005-32054-01 Woodruff Key 1 200
310 20B-22501-00 Connecting Rod Ay 1 200
320 001-05084-00 Connecting Rod Bolt 2 200
350 263-23301-33 Piston Pin 1 200
360 20B-23401-H3 Piston 1 Std 200
360 20B-23403-H3 Piston 1 Oversize 0.25mm 200
360 20B-23404-H3 Piston 1 Oversize 0.50mm 200
370 20B-23501-07 Piston Ring Set 1 Std 200
370 20B-23502-07 Piston Ring Set 1 Oversize 0.25mm 200
370 20B-23503-07 Piston Ring Set 1 Oversize 0.50mm 200
380 056-52100-20 Clip 2 200
390 20B-24101-03 Balancer Shaft 1 200

EX40 - 9 - 08-09

SECTION 3 INTAKE and EXHAUST GROUP

FIG. 300

350

365

80

90

290

340

60

70

310

241

225

220

240

231

320

361

315

317

370

210

230

95

170

25

150

27

37

35

10

34

38

166

160

163

EX40 - 10 - 08-09