Robin EX35 User manual

PARTS
MANUAL
EX35
ENGINES
Models
PUB-EP
Rev. 08/09

© Copyright 2009 Robin America, Inc.
Robin America, Inc.
905 Telser Road, Lake Zurich, IL 60047 • Phone: [phone] • Fax:[phone]
e-mail: [email protected] • www.subarupower.com

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 specifica-
tion 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:
X X X X
SPEC NO. (11 digits) CODE NO. (4 digits)
PRODUCT NO. (15 digits)
E X 3 5 0

MANUAL LAYOUT
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:
- 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.
1
23
4
16792
8
3
5
4

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
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
INDEX OF DESCRIPTION SYMBOLS

EX35 - 6 - 08-09
SECTION 1 CRANKCASE GROUP
FIG. 100
260
250
270
280
220
210
230
240
300
10
50
40
45
75 30
700
90
80
70 20 28
27 26
60
620
631 630
690 680
710
610

EX35 - 7 - 08-09
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 1 CRANKCASE GROUP
10 20E-10102-21 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
270 224-63601-01 Oil Gauge 2 100
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

EX35 - 8 - 08-09
SECTION 2 CRANKSHAFT GROUP
FIG. 200
310
320
360 370
380
350
10 70
390

EX35 - 9 - 08-09
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 2 CRANKSHAFT GROUP
10 20B-20901-11 Crankshaft Cp 1 200
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

EX35 - 10 - 08-09
SECTION 3 INTAKE and EXHAUST GROUP
FIG. 300
350
310
365
315
317
340
80
90
290
225
241 231
210
240
230
60
70 220
95
320
361
170
25
27
37 35 34 38 166 163 160
10
150
370

EX35 - 11 - 08-09
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 3 INTAKE and EXHAUST GROUP
10 20B-31601-01 Camshaft Cp 1 300
25 20B-35101-11 Pin Cp, camshaft 1 300
27 024-00700-20 O ring 1 300
34 005-19041-00 Pin, spring 2 300
35 277-36401-03 Release Lever 1 300
37 20B-36501-03 Clip 1 300
38 277-38702-03 Return Spring 1 300
60 246-33611-03 Valve Spring 2 300
70 246-33711-13 Spring Retainer 2 300
80 20B-33401-H3 Intake Valve 1 300
90 20B-33501-H3 Exhaust Valve 1 300
95 246-35501-03 Collet Valve 4 300
150 20B-35601-H1 Timing Chain 1 300
160 277-36911-03 Tentioner 1 300
163 277-37101-03 Spring, tentioner 1 300
166 277-36902-03 Pin, tentioner 1 300
170 277-36913-13 Chain Guide 1 300
200 20B-35001-01 Pin Cp, rocker 1 300
210 003-13060-00 Clip 1 300
220 20B-36101-00 Rocker Arm Ay, intake 1 300
225 20B-36102-10 Rocker Arm Ay, exhaust 1 300
230 014-90500-20 Adjust Screw 1 300
231 014-90500-20 Adjust Screw 1 300
240 017-00500-30 Nut 1 300
241 017-00500-30 Nut 1 300
290 011-00600-20 Flange Bolt 1 300
310 20B-30101-J2 Muffler 1 300
315 20B-37001-11 Deflector Cp 1 300
317 015-00400-60 Tapping screw 3 300
320 20B-34201-11 Muffler Cover Cp 1 300
340 20B-35201-03 Gasket, muffler 1 300
350 980-20082-80 Flange Nut 2 300
361 011-00600-10 Flange Bolt 5 300
365 011-00803-20 Flange Bolt 1 300

EX35 - 12 - 08-09
SECTION 3 INTAKE and EXHAUST GROUP
FIG. 310
200 290
295
280
250
510
520
270
220
260

EX35 - 13 - 08-09
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 3 INTAKE and EXHAUST GROUP
510 20B-32611-H0 Air Cleaner Ay 1 315
-200 20B-32630-H8 Cleaner Body 1 315
-220 20B-32720-H8 Gasket, packing 1 315
-250 20B-32640-H8 Cover Cp 1 315
-260 20B-32850-H8 Cap 1 315
-270 20B-32650-H8 Bolt 1 315
280 X85-11001-80 Rubber Pipe, breather 1 315
290 002-38060-00 Flange Nut 2 315
295 001-04061-60 Flange Bolt 1 315
520 20B-32610-H7 Element 1 315

EX35 - 14 - 08-09
SECTION 4 GOVERNOR GROUP
FIG. 400
80
30
40
450
340
345 310
311
355
480
10
70
60
485
360
370
435 396
395
436
50
90
20 50
490

EX35 - 15 - 08-09
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 4 GOVERNOR GROUP
10 20B-42301-00 Governor Lever Ay 1 400
20 20B-42201-01 Governor Shaft 1 400
30 20B-42701-01 Governor Rod 1 400
40 20B-42801-13 Rod Spring 1 400
50 003-13060-00 Clip 2 400
60 001-14062-50 Bolt and Washer Ay 1 400
70 018-60600-20 Nut 1 400
80 20B-42501-13 Governor Spring 1 400
90 003-11080-00 Washer 1 400
310 20B-43301-01 Speed Control Lever Cp 1 400
340 227-43501-13 Stop Plate 1 400
345 227-45002-03 Spring Washer 1 400
355 021-70600-30 Friction Washer 2 400
360 004-31061-80 Screw, panhead 1 400
370 002-27060-00 Nut 1 400
395 277-43902-03 Clamp 1 400
396 013-10500-30 Screw and Washer Ay 1 400
435 20B-46001-21 Speed Control Bracket Cp 1 400
436 20B-35903-03 Gasket 3 1 400
450 002-35060-00 Self Lock Nut 1 400
480 267-45101-03 Return Spring 1 400
485 011-00600-20 Flange Bolt 1 400
490 277-96107-03 Label, hi-low 1 400

EX35 - 16 - 08-09
SECTION 5 COOLING and STARTING GROUP
FIG. 500
707
705
706
220
210
20
80
60 40
16
10
15
17
61
81
18

EX35 - 17 - 08-09
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 5 COOLING and STARTING GROUP
10 20B-51201-H1 Blower Housing 1 500
15 20B-55101-02 Recoil Bracket UN 1 500
16 010-00804-40 Bolt 2 500
17 010-00804-50 Bolt 2 500
18 002-38060-00 Flange Nut 4 500
20 073-20054-70 Label, trademark 1 Subaru 500
40 001-04061-60 Flange Bolt 5 500
60 001-65081-20 Bolt 1 500
61 20B-52702-H1 Baffle 2, head 1 500
80 279-52711-11 Baffle 1, case 1 500
81 011-00600-20 Flange Bolt 3 500
220 013-00602-81 Bolt and Washer Ay 4 500
705 KU3-11077-01 Float C/U Cp11 1 Recoil 500
KU3-11076-01 Float C/U Cp10 1 Electric Start 500
706 20B-73102-01 Wire 2 Cp 1 500
707 004-36041-20 Screw and Washer 2 500

EX35 - 18 - 08-09
SECTION 5 COOLING and STARTING GROUP
FIG. 520
-1
-4
-7
210
-5
-9
-6
-11
-8
-2
-3
-10

EX35 - 19 - 08-09
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 5 COOLING and STARTING GROUP
210 20B-50301-00 Recoil Starter Ay 1 520
-1 20B-50145-08 Starter Pulley 1 520
-2 261-50100-08 Starter Knob 1 520
-3 20B-50110-08 Starter Rope 1 520
-4 20B-50101-08 Set Screw 1 520
-5 161-50150-08 Ratchet Guide 1 520
-6 227-50135-08 Return Spring 2 520
-7 227-50131-08 Friction Spring 1 520
-8 277-50155-08 Spiral Spring 1 520
-9 161-50125-08 Ratchet 2 520
-10 20B-50120-08 Reel 1 520
-11 20B-50150-08 Starter Case 1 520

EX35 - 20 - 08-09
SECTION 6 FUEL, LUBRICATION GROUP
FIG. 600
40 23
30
10
20
52
60 63
59
53
51
54
50
58
55 56
57
210
560 550
540