Robin America EH722 EFI User manual

PARTS
MANUAL
EH722 EFI
ENGINES
Models
PUB-EP
Rev. 04/10

© Copyright 2010 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 H 7 2 2

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 .................................................................. 24
ACCESSORY GROUP............................................................................. 26
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

EH722 EFI - 6 - 04-10
SECTION 1 CRANKCASE GROUP
FIG. 100

EH722 EFI - 7 - 04-10
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 1 CRANKCASE GROUP
10 280-10102-C1 Crankcase Cp 1 100
20 263-14211-03 Valve Guide 2 100
21 056-51000-50 Clip 1 100
22 263-14211-03 Valve Guide 2 100
23 056-51000-50 Clip 1 100
26 132-11AA1-10 Seal, exhaust valve 1 100
27 132-11AA1-10 Seal, exhaust valve 1 100
28 263-35341-03 Retainer Plate 1 100
29 263-35341-03 Retainer Plate 1 100
40 263-15802-03 Main Bearing 1 100
50 X31-00600-20 Dowel Pin 2 100
55 263-55601-03 Pipe 2 100
60 010-50802-90 Stud 4 100
61 010-50802-90 Stud 4 100
75 044-00800-10 Oil Seal 1 100
80 X40-11400-30 Plug 2 100
85 263-15911-A1 Blind Plug Cp 1 100
90 021-11400-20 Gasket 2 100
200 263-76102-H1 Oil Pressure Switch 1 100
210 263-11004-E1 Main Bearing Cover Cp 1 100
220 044-04200-30 Oil Seal 1 100
230 X60-04500-10 Ball Bearing 1 100
250 263-45001-C1 Governor Gear Cp 1 100
255 263-46215-A3 Thrust Bearing 1 100
257 263-46214-A3 Washer 2 100
260 277-41901-03 Governor Sleeve 1 100
290 263-16002-A3 Gasket, main bearing cover 1 100
300 X11-00802-20 Flange Bolt 10 100
610 280-13003-A1 Cylinder Head 1 Cp 1 100
615 280-13103-A1 Cylinder Head 2 Cp 1 100
620 280-15001-13 Gasket 1, cylinder head 1 100
621 280-15101-13 Gasket 2, cylinder head 1 100
630 X11-01000-70 Flange Bolt 8 100
680 280-15501-A3 Rocker Cover 1 100
681 263-15501-A3 Rocker Cover 1 100
690 263-16101-A3 Gasket, rocker cover 2 100
700 X31-00600-20 Dowel Pin 4 100
710 X11-00601-01 Flange Bolt 8 100
800 280-19001-A3 Hook 2 100
810 263-14301-03 Breather Cover 1 100
820 280-14401-A1 Breather Plate Cp 1 100
830 263-16006-03 Gasket, breather plate 2 100
860 X11-00600-30 Flange Bolt 2 100
960 280-99001-17 Gasket Set 1 100

EH722 EFI - 8 - 04-10
SECTION 2 CRANKSHAFT GROUP
FIG. 200

EH722 EFI - 9 - 04-10
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 2 CRANKSHAFT GROUP
10 280-21101-C1 Crankshaft Cp 1 200
40 263-25012-A3 Spacer 1 200
41 263-25013-A3 Spacer 1 200
42 263-25014-A3 Spacer 1 200
50 X18-01800-10 Flange Nut 1 200
65 003-10180-00 Washer 1 200
70 005-32054-01 Woodruff Key 1 200
310 263-22601-20 Connecting Rod Ay 2 200
311 263-22602-10 Connecting RodAy 2 Undersize 0.25mm 200
320 001-05084-00 Flange Bolt 4 200
350 263-23301-33 Piston Pin 2 200
360 280-23411-H3 Piston 2 Std 200
361 280-23412-H3 Piston 2 Oversize 0.25mm 200
362 280-23413-H3 Piston 2 Oversize 0.50mm 200
370 280-23501-07 Piston Ring Set 2 Std 200
371 280-23502-07 Piston Ring Set 2 Oversize 0.25mm 200
372 280-23503-17 Piston Ring Set 2 Oversize 0.50mm 200
380 056-52100-20 Clip 4 200

EH722 EFI - 10 - 04-10
SECTION 3 INTAKE and EXHAUST GROUP
FIG. 300

EH722 EFI - 11 - 04-10
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 3 INTAKE and EXHAUST GROUP
10 280-31801-03 Camshaft 1 300
50 263-33301-A3 Tappet 4 300
60 246-33611-03 Valve Spring 4 300
70 246-33711-13 Spring Retainer 4 300
80 263-33401-03 Intake Valve 2 300
90 263-33502-13 Exhaust Valve 2 300
95 246-35501-03 Collet Valve 8 300
210 263-35322-A1 Push Rod Cp 4 300
220 267-36102-03 Rocker Arm 4 300
230 263-35801-03 Bolt, pivot 4 300
235 267-35701-03 Pivot 4 300
240 X17-00601-10 Nut 4 300
260 263-37002-A3 Guide Plate 2 300
500 280-33005-H1 Intake Manifold Cp 1 300
505 010-50601-91 Stud 4 300
507 002-38060-00 Flange Nut 4 300
530 280-35622-03 Gasket, cleaner 1 300
538 280-35501-03 Gasket, adapter 1 300
550 280-66202-03 Gasket, carburetor 1 300
555 263-35503-A3 Gasket, intake manifold 2 300
580 X11-00600-20 Flange Bolt 3 300
590 002-38080-00 Flange Nut 4 300
700 280-38001-03 Cleaner Adapter 1 300
850 280-18001-03 Breather Pipe 1 300
853 263-68512-A3 Hose Clamp 2 300
866 X42-30600-30 Cap, vinyl 1 300
920 20K-91702-A3 Label, trademark 1 300

EH722 EFI - 12 - 04-10
SECTION 3 INTAKE and EXHAUST GROUP
FIG. 330

EH722 EFI - 13 - 04-10
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 3 INTAKE and EXHAUST GROUP
510 20K-32601-A0 Air Cleaner Ay 1 315
512 280-32626-A1 Cleaner Base Cp 1 315
514 263-32630-03 Cleaner Cover 1 315
516 263-32640-01 Wing Nut 1 315
520 263-32610-A1 Cleaner Element CP 1 315

EH722 EFI - 14 - 04-10
SECTION 4 GOVERNOR GROUP
FIG. 400

EH722 EFI - 15 - 04-10
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 4 GOVERNOR GROUP
10 263-42301-B3 Governor Lever 1 400
20 263-42201-A3 Governor Shaft 1 400
25 X23-00801-50 Spacer 1 400
26 003-10080-00 Washer 2 400
30 20K-42701-A3 Governor Rod 1 400
40 20K-42801-B3 Governnor Rod Spring 1 400
50 005-11060-01 Snap Pin 1 400
60 001-14063-00 Bolt and WasherAy 1 400
70 X18-60600-20 Nut 1 400
80 263-42501-A3 Governor Spring 1 400
310 263-43301-A3 Sped Control Lever 1 400
340 227-43501-13 Stop Plate 1 400
350 263-45002-03 Spring Washer 1 400
355 021-70600-30 Friction Washer 2 400
360 X11-50500-20 Bolt 2 400
370 002-27050-00 Nut 2 400
381 X17-60600-20 Self Lock Nut 1 400
395 261-43901-03 Clamp, 2 400
396 001-17052-00 Bolt and WasherAy 2 400
435 263-45011-A2 Bracket Un, speed control 1 400
465 X84-14320-00 Rubber Foam 1 400
485 X11-00600-20 Flange Bolt 2 400

EH722 EFI - 16 - 04-10
SECTION 5 COOLING and STARTING GROUP
FIG. 500

EH722 EFI - 17 - 04-10
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 5 COOLING and STARTING GROUP
10 280-51202-A2 Blower Housing Un 1 500
20 073-20057-20 Label, FI 1 500
25 073-20057-60 Label, warning 1 500
40 X11-00600-30 Flange Bolt 6 500
41 X11-00601-40 Flange Bolt 2 500
60 263-52612-A1 Cylinder Baffle 1 Cp 1 500
61 280-52701-C1 Cylinder Baffle 2 Cp 1 500
62 280-52801-A2 Cylinder Baffle 3 Un 1 500
63 263-52912-A2 Cylinder Baffle 4 Un 1 500
80 X11-00600-20 Flange Bolt 6 500
81 X11-00600-20 Flange Bolt 1 500
110 263-54101-A2 Cooling Blower Un 1 500
113 001-14061-60 Bolt and Washer Ay 4 500
145 X11-00600-10 Flange Bolt 2 500

EH722 EFI - 18 - 04-10
SECTION 6 FUEL, LUBRICATION GROUP
FIG. 600

EH722 EFI - 19 - 04-10
Ref. Part Number Description Qty Remarks To-From Fig.
SECTION 6 FUEL, LUBRICATION GROUP
55 263-65012-A3 Fuel Filter 1 600
164 X85-10616-60 Rubber Pipe 1 600
165 263-68501-03 Hose Clamp 2 600
166 X85-10614-81 Rubber Pipe 1 600
167 263-68501-03 Hose Clamp 2 600
168 X85-10613-81 Rubber Pipe 1 600
169 263-68501-03 Hose Clamp 2 600
270 263-63604-11 Gauge Cp, oil level 1 600
272 263-63622-01 Guide Cp 1 600
280 024-01000-10 O ring 2 600
511 20K-62201-00 Fuel Pump Ay 1 600
540 X11-00600-20 Flange Bolt 9 600
610 263-63901-13 Inner Rotor 1 600
615 263-63902-13 Outer Rotor 1 600
620 263-64002-A1 Oil Pump Cover Cp 1 600
623 044-03501-70 Oil Seal 1 600
625 X24-08900-30 O ring 1 600
640 X11-00600-30 Flange Bolt 4 600
650 263-64302-02 Oil Pump Filter Un 1 600
653 263-65011-A3 Flange Bolt 1 600
660 248-65801-00 Oil Filter Ay 1 600
670 X40-11400-50 Plug, oil relief 1 600
673 003-70140-00 Gasket, aluminum 1 600
677 263-66001-03 Spring, relief valve 1 600
680 006-90308-00 Steel Ball 1 600
714 280-63602-A1 Oil Filler Cap Cp 1 600
718 263-64414-A3 O ring 1 600

EH722 EFI - 20 - 04-10
SECTION 6 FUEL, LUBRICATION GROUP
FIG. 660