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PARTS
MANUAL
Models
EH722 LP
ENGINES
PUB-EP
Rev. 05/10
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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:
E H 7 2 2
X X X X
SPEC NO. (11 digits)
CODE NO. (4 digits)
PRODUCT NO. (15 digits)
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MANUAL LAYOUT
1
4
3
2
1
3
9
6
7
2
5
4
8
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
6. DESCRIPTION
7. QTY.
It is the number assigned for sales unit. Use the PART No. when making an order.
It is designation of the part.
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.
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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
INDEX OF DESCRIPTION SYMBOLS
SYMBOL
DESCRIPTION
SYMBOL
DESCRIPTION
AY...........................ASSEMBLY
CP...........................COMPLETE
EX...........................EXPORT (from Japan)
FIG..........................FIGURE
P=...........................PITCH (in mm)
P.T.O. (PTO) ...........POWER TAKE OFF
REF.........................REFERENCE
R.H. (RH)................RIGHT HAND SIDE
RR. .........................REAR
FR...........................FRONT
" ..............................INCH
INCL. ......................INCLUDE
~L............................LITER
L= ...........................LENGTH (in. mm)
L.H. (LH).................LEFT-HAND SIDE
MECH.....................MECHANICAL
NO (NON)...............NONE
STD. .......................STANDARD
SW..........................SWITCH
T= ...........................THICKNESS (in mm)
UN ..........................UNIT
U.S..........................UNDER SIZE
~V...........................VOLTAGE
~W..........................WATT
OPT.........................OPTIONAL
O.S. ........................OVER SIZE
W/ ...........................WITH
W/O ........................WITHOUT
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SECTION 1
CRANKCASE GROUP
FIG. 100
EH722 LP
- 6 -
05-10
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SECTION 1
CRANKCASE GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
10
20
21
22
23
26
27
28
29
40
50
55
60
61
75
80
280-10102-C1 Crankcase Cp
263-14203-03 Valve Guide
056-51000-50 Clip
263-14203-03 Valve Guide
056-51000-50 Clip
132-11AA1-10 Seal, exhaust valve
132-11AA1-10 Seal, exhaust valve
263-35341-03 Retainer Plate
263-35341-03 Retainer Plate
263-15802-03 Main Bearing
X31-00800-80 Dowel Pin
1
2
1
2
1
1
1
1
1
1
2
2
4
4
1
2
1
2
1
1
1
1
1
1
2
1
1
10
1
1
1
1
8
1
1
1
4
8
2
1
1
2
2
1
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
100
100
100
100
100
100
100
100
100
100
100
263-55601-03 Pipe
010-50802-90 Stud
010-50802-90 Stud
044-00800-10 Oil Seal
X40-11400-30 Plug
263-15911-A1 Blind Plug Cp
021-11400-20 Gasket
263-76102-H1 Switch, oil pressure
263-11002-F1 Main Bearing Cover Cp
044-04200-30 Oil Seal
X60-04500-10 Ball Bearing
263-45001-C1 Governor Gear Cp
263-46215-A3 Thrust Bearing
263-46214-A3 Washer
277-41901-03 Governor Sleeve
263-16002-A3 Gasket, main bearing cover
X11-00802-20 Flange Bolt
280-13011-B1 Cylinder Head 1 Cp
280-13111-B1 Cylinder Head 2 Cp
280-15001-13 Gasket 1, cylinder head
280-15101-13 Gasket 2, cylinder head
X11-01000-70 Flange Bolt
280-15501-A3 Rocker Cover
263-15501-A3 Rocker Cover
263-16101-A3 Gasket, rocker cover
X31-00600-20 Dowel Pin
85
90
200
210
220
230
250
255
257
260
290
300
610
615
620
621
630
680
681
690
700
710
800
810
820
830
860
960
X11-00601-01 Flange Bolt
280-19001-A3 Hook
263-14301-03 Breather Cover
280-14401-A1 Breather Plate Cp
263-16006-03 Gasket, breather plate
X11-00600-30 Flange Bolt
Gasket Set
EH722 LP
- 7 -
05-10
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SECTION 2
CRANKSHAFT GROUP
FIG. 200
EH722 LP
- 8 -
05-10
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SECTION 2
CRANKSHAFT GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
10
40
41
42
50
65
70
310
320
350
360
370
380
280-21201-C1 Crankshaft Cp
263-25012-A3 Spacer
263-25013-A3 Spacer
263-25014-A3 Spacer
X18-01800-10 Nut
1
200
200
200
200
200
200
200
200
200
200
200
200
200
1
1
1
1
1
1
2
4
2
2
2
4
t=0.8
t=1.0
t=1.2
003-10180-00 Washer
005-32054-01 Woodruff Key
263-22601-20 Connecting Rod Ay
001-05084-00 Connecting Rod Bolt
263-23301-33 Piston Pin
280-23411-H3 Piston
280-23501-07 Piston Ring Set
056-52100-20 Clip
EH722 LP
- 9 -
05-10
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SECTION 3
INTAKE and EXHAUST GROUP
FIG. 300
500
555
590
555
EH722 LP
- 10 -
05-10
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SECTION 3
INTAKE and EXHAUST GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
10
50
60
70
80
90
95
280-31701-13 Camshaft
263-33301-A3 Tappet
1
4
4
4
2
2
8
4
4
4
4
4
2
2
4
1
1
2
3
4
1
2
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
246-33611-03
246-33711-13
Valve Spring
Sprint Retainer
263-33402-03 Intake valve
263-33503-13 Exhaust Valve
246-35501-03 Collet Valve
210 263-35322-A1 Push Rod Cp
220 267-36102-03 Rocker Arm
230 263-35801-03 Bolt, pivot
235 267-35701-03 Pivot
240 X17-00601-10 Nut
260 263-37002-A3 Guide Plate
340 270-35201-01 Gasket Cp, muffler
350 002-38080-00 Flange Nut
500 280-33003-J3
Intake Manifold
550 280-35501-A3 Gasket, adapter
555 263-35503-A3 Gasket, intake manifold
580 X11-00600-20 Flange Bolt
590 002-38080-00 Flange Nut
850 263-18003-03 Rubber Pipe
853 263-68512-A3 Hose Clamp
EH722 LP
- 11 -
05-10
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SECTION 3
INTAKE and EXHAUST GROUP
FIG. 330
EH722 LP
- 12 -
05-10
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SECTION 3
INTAKE and EXHAUST GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
512
514
516
520
280-32625-A1 Cleaner Base Cp
280-32631-A3 Cleaner Cover
263-32640-01 Wing Nut
1
1
1
1
315
315
315
315
280-32610-A1 Cleaner Element Cp
EH722 LP
- 13 -
05-10
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SECTION 4
GOVERNOR GROUP
FIG. 400
EH722 LP
- 14 -
05-10
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SECTION 4
GOVERNOR GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
10
20
25
26
30
40
50
60
263-42301-B3 Governor Lever
263-42201-A3 Governor Shaft
X23-00801-50 Spacer
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
2
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
003-10080-00 Washer
263-42701-A3 Governor Rod
263-42801-03 Rod Spring
005-11060-01 Snap Pin
001-14063-00 Bolt and Washer Ay
X18-60600-20 Nut
263-42509-A3 Governor Spring
263-43311-A3 Speed Control Lever
X11-50500-20 Bolt, speed set
002-27050-00 Nut, speed set
002-38060-00 Flange Nut
263-45021-A2 Bracket Unit, speed control
X11-00600-20 Flange Bolt
70
80
310
360
370
381
435
485
EH722 LP
- 15 -
05-10
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SECTION 5
COOLING and STARTING GROUP
FIG. 500
EH722 LP
- 16 -
05-10
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SECTION 5
COOLING and STARTING GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
10
40
60
61
62
63
80
81
110
113
280-51101-C2 Blower Housing Unit
X11-00600-30 Flange Bolt
1
8
1
1
1
1
6
2
1
4
500
500
500
500
500
500
500
500
500
500
263-52612-A1 Cylinder Baffle 1 Cp
280-52701-C1 Cylinder Baffle 2 Cp
263-52802-A3 Cylinder Baffle 3
263-52912-A2 Cylinder Baffle 4 Unit
X11-00600-20 Flange Bolt
X11-00600-10 Flange Bolt
263-54101-A2 Cooling Blower Unit
001-14061-60 Bolt and Washer Ay
EH722 LP
- 17 -
05-10
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SECTION 6
FUEL, LUBRICATION GROUP
FIG. 600
EH722 LP
- 18 -
05-10
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SECTION 6
FUEL, LUBRICATION GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
270
573
610
615
620
623
625
640
650
653
660
670
673
677
680
714
718
263-63603-01 Oil Gauge Cp
X11-00801-10 Flange Bolt
263-63901-13 Inner Rotor
263-63902-13 Outer Rotor
263-64002-A1 Oil Pump Cover Cp
044-03501-70 Oil Seal
1
2
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
X24-08900-30 O ring
X11-00600-30 Flange Bolt
263-64302-02 Oil Pump Filter Unit
263-65011-A3 Flange Bolt
248-65801-00 Oil Filter Ay
X40-11400-50 Plug, oil relief
003-70140-00 Gasket, aluminum
263-66001-03 Spring, relief valve
006-90308-00 Steel Ball
280-63602-A1 Oil Filler Cap Cp
263-64414-A3 O ring
EH722 LP
- 19 -
05-10
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SECTION 6
FUEL, LUBRICATION GROUP
FIG. 660
EH722 LP
- 20 -
05-10
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SECTION 6
FUEL, LUBRICATION GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
930 280-65212-00 Mixer Ay
280-62536-08 Throttle Valve
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
660
-2
-3
-4
-6
261-62352-08 Screw, valve set
280-62525-08 Choke Valve
258-62555-08 Set Screw, valve
280-62500-08 Needle Cp, idle adjust
280-62520-08 Choke Shaft Ay
280-62532-08 Throttle Shaft Ay
280-62402-08 Main Jet
-8
-11
-22
-23
-40
-41
-59
-61
-62
-94
280-62403-08 Main Jet
263-62451-08 Thottle Adjust Screw
258-62445-08 Spring, adjust screw
263-62560-08 O ring, air horn
280-62552-08 Collar, choke
280-62558-08 Filter, choke
280-62446-08 Spring, choke return
-102 258-62558-08 Filter, throttle shaft
-210 280-62362-08 Opener Ay, choke
-211 280-62370-08 Hose
100mm
40mm
-212 280-62371-08 Hose
-213 107-62567-08 Delay Valve Ay
-214 263-62585-08 Screw with washer
-216 280-62350-08 Rod, choke piston
-218 263-62596-08 Washer, rod
-219 107-62377-08 E ring, rod
-240 280-62335-08 Fuel Connector
-241 280-62560-08 Gasket, connector
EH722 LP
- 21 -
05-10
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SECTION 6
FUEL, LUBRICATION GROUP
FIG. 685
EH722 LP
- 22 -
05-10
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SECTION 6
FUEL, LUBRICATION GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
752 280-65011-A1 Adapter Cp
754 280-65025-A3 Elbow Adapter 1
758 280-65050-A3 O ring
765 X11-00601-01 Flange Bolt
810 280-65001-C1 Oil Cooler Cp
822 280-65037-03 Hose 1, oil cooler
824 280-65038-03 Hose 2, oil cooler
826 X56-10900-30 Hose Clamp
840 280-65030-01 Bracket Cp, oil cooler
1
2
1
3
1
1
1
4
1
685
685
685
685
685
685
685
685
685
EH722 LP
- 23 -
05-10
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SECTION 7
ELECTRIC DEVICE GROUP
FIG. 700
384
61
EH722 LP
- 24 -
05-10
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SECTION 7
ELECTRIC DEVICE GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
700
10
11
15
20
30
35
61
70
95
263-77203-11 Flywheel
1
2
1
1
4
4
1
1
2
2
2
2
1
1
2
3
263-78201-01 Ignition Coil
263-79411-A1 Charge Coil
263-71002-03 Ring Gear
001-14062-50 Bolt and Washer Ay
001-16052-00 Screw and Washer Ay
KU3-11052-21 Stop Diode Cp
X11-00600-10 Flange Bolt
X65-91000-10 Plug Terminal
100 065-01404-80 Spark Plug
110 X65-51000-10 Spark Plug Cap
130 X11-00801-00 Flange Bolt
216 002-38080-00 Flange Nut
291 263-71901-A1 Regulator CP
301 X11-00601-40 Flange Bolt
384 X56-30000-80 Wire Band
EH722 LP
- 25 -
05-10
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SECTION 7
ELECTRIC DEVICE GROUP
FIG. 770
EH722 LP
- 26 -
05-10
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SECTION 7
ELECTRIC DEVICE GROUP
Ref. Part Number Description
Qty Remarks
To-From
Fig.
120 263-70503-00 Starting Motor Ay
1
1
1
1
1
1
1
1
1
2
1
1
1
1
3
1
1
1
731
731
731
731
731
731
731
731
731
731
731
731
731
731
731
731
731
731
-1
-4
-6
-7
-9
-11
263-70561-08 Yoke Ay
245-70503-08 Brush Holder Ay
263-70512-08 Armature Ay
263-70522-08 Pinion Ay
263-70503-08 Gear Case Cy
263-70507-08 Rear Cover Ay
-14 245-70518-08 Shift Lever Set
-15 263-70515-08 Magnetic Switch Ay
-17 207-70524-08 Through Bolt
-23 245-70516-08 Washer Stopper Set
-30 245-70520-08 Dust Cover Kit
-77 207-70526-08 Rubber Cap
-80 263-70596-08 Internal Gear
-82 263-70576-08 Planet Gear
-85 245-70509-08 Center Bracket, P
-86 263-70591-08 Center Bracket, A
-95 263-70571-08 Pinion Shaft
EH722 LP
- 27 -
05-10
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SECTION 8
SHIP LOOSE ITEMS
FIG. 800
(Illustrations are excluded)
EH722 LP
- 28 -
05-10
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SECTION 8
SHIP LOOSE ITEMS
Ref. Part Number Description
Qty Remarks
To-From
Fig.
102 280-68201-A3 Hose
1
2
1
2
1
1
1/2 dia
800
800
800
800
800
800
103 056-12500-10 Hose Clamp
110 280-65301-A0 Regualtor Cp
111 280-65402-00 Fuel Solenoid Ay
112 280-65601-A3 Elbow
LPG
3/8 NPT
3/4 NPT
113 280-65602-A3 Elbow
EH722 LP
- 29 -
05-10
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PRINTED IN THE USA
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