PARTS
MANUAL
Model
PKX301
PUMP
PUB-PP5873
Rev. 07/03
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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 X 1 3 0
X X X X
SPEC NO. (11 digits)
CODE NO. (4 digits)
PRODUCT NO. (15 digits)
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MANUAL LAYOUT
1
2
4
3
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
PUMP GROUP........................................................................................... 6
CRANKCASE GROUP............................................................................... 8
CRANKSHAFT GROUP........................................................................... 10
INTAKE and EXHAUST GROUP.............................................................. 12
GOVERNOR GROUP .............................................................................. 16
COOLING and STARTING GROUP......................................................... 18
FUEL, LUBRICANT GROUP.................................................................... 20
CARBURETOR GROUP .......................................................................... 22
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
PUMP GROUP
FIG. 100
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SECTION 1
PUMP GROUP
REF. PART NO.
DESCRIPTION
CASING
QTY. REMARKS
w/ oil sensor
FROM-TO FIG.
100
110
115
120
130
140
145
150
170
172
180
210
280
285
310
314
320
410
414
420
460
462
510
520
610
670
680
681
684
686
690
691
910
470-01127-95
470-01139-89
470-01143-79
470-01150-57
470-01106-64
470-01104-91
470-01150-15
470-01180-78
471-00000-05
471-00000-50
470-01127-96
471-00000-03
471-00000-02
470-01128-76
471-00000-50
470-01127-99
470-01133-37
471-00000-34
470-01105-84
470-01180-79
471-00000-09
470-01181-95
471-00000-06
470-01176-91
470-01105-15
471-00000-65
471-00000-71
471-00000-68
471-00000-66
471-00000-57
471-00000-57
470-01165-65
1
1
1
1
1
3
1
1
1
4
1
4
4
1
3
1
1
4
1
1
1
1
3
1
4
4
4
4
4
4
4
1
O RING
INNER CASING
IMPELLER
MECHANICAL SEAL
ADJUSTING WASHER
O RING
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
PLUG AY
O RING
BOLT AND WASHER
FLANGE BRACKET
SOCKET BOLT
SEAL WASHER
SUCTION FLANGE
BOLT AND WASHER
CHECK VALVE
DELIVERY FLANGE
BOLT AND WASHER
PACKING, DELIVERY
PLUG AY
O RING
STRAINER
HOSE BAND
FRAME
CUSHION RUBBER
BOLT AND WASHER
BOLT AND WASHER
SPRING WASHER
WASHER
NUT
NUT
LABEL, PUMP NAME
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SECTION 2
CRANKCASE GROUP
FIG. 200
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SECTION 2
CRANKCASE GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
10
277-10102-41 CRANKCASE CP
277-10102-31 CRANKCASE CP
237-14201-03 VALVE GUIDE
277-16010-01 STEM SEAL
044-02502-00 OIL SEAL
060-02800-21 BALL BEARING
060-02800-20 BALL BEARING
277-15011-03 PIPE KNOCK
010-50802-50 STUD
1
1
2
1
1
1
1
2
2
2
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
6
1
1
4
1
1
1
2
4
1
5692~
~5691
200
200
200
200
200
200
200
200
200
200
200
200
200
200
20
26
30
40
5692~
~5691
50
60
70
75
80
90
010-50603-51 STUD
044-00600-20 OIL SEAL
040-11400-30 PLUG
021-11400-20 GASKET
210 277-11001-31 MAIN BEARING COVER
277-11001-21 MAIN BEARING COVER
5692~
5753-5691 200
~5752
277-11001-11
MAIN BEARING COVER
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
220 044-02502-10 OIL SEAL
230 060-02501-40 BALL BEARING
060-02500-10 BALL BEARING
250 277-45004-21 GOVERNOR GEAR
260 263-41901-03 GOVERNOR SLEEVE
270 277-63601-13 OIL GAUGE
275 277-65001-03 FILLER PLUG
280 021-31600-20 GASKET
5692~
~5691
281 021-31600-20 GASKET
300 001-04083-50 FLANGE BOLT
610 277-13001-01 CYLINDER HEAD
620 277-15001-13 GASKET, HEAD
630 011-00802-40 FLANGE BOLT
631 001-04083-50 FLANGE BOLT
680 277-15501-01 ROCKER COVER CP
690 277-16001-03 GASKET, ROCKER COVER
700 277-15011-03 PIPE KNOCK
710 011-00600-20 FLANGE BOLT
960 227-99001-07 GASKET SET
Gasket Sets include the following:
Fig. 200 items 90, 280, 620 and 690
Fig. 400 items 340 and 550
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SECTION 3
CRANKSHAFT GROUP
FIG. 300
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SECTION 3
CRANKSHAFT GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
5784~ 300
5692-5783 300
10
277-20301-21 CRANKSHAFT
277-20301-11 CRANKSHAFT
277-20301-01 CRANKSHAFT
018-01400-20 FLANGE NUT
032-30300-10 WOODRUFF KEY
1
1
1
1
1
1
2
1
1
1
2
~5691
300
300
300
300
300
300
300
300
300
50
70
310 277-22501-10 CONNECTING ROD
320 277-23001-03 CONNECTING ROD BOLT
350 277-23301-03 PISTON PIN
360 277-23401-03 PISTON
370 277-23511-07 PISTON PRING SET
380 056-51600-10 CLIP
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- 11 -
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SECTION 4
INTAKE and EXHAUST GROUP
FIG. 400
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- 12 -
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SECTION 4
INTAKE and EXHAUST GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
10
25
27
34
35
37
38
60
70
80
90
95
277-31601-01 CAMSHAFT
277-35101-03 PIN, CAMSHAFT
024-00600-10 O RING
277-38601-03 PIN, SPRING
277-36401-03 RELEASE LEVER
277-36501-03 CLIP
277-38701-03 RETURN SPRING
279-33601-03 VALVE SPRING
269-33701-03 SPRING RETAINER
277-33401-13 INTAKE VALVE
277-33501-13 EXHAUST VALVE
132-10KA0-31 COLLET VALVE
1
1
1
1
1
1
1
2
2
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
2
1
1
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
400
150 277-35601-01 TIMING CHAIN
160 277-36911-03 TENTIONER
163 277-37101-03 SPRING, TENTIONER
166 277-36902-03 PIN, TENTIONER
170 277-36913-13 CHAIN GUIDE
200 277-35001-23 PIN, ROCKER
277-35001-13 PIN, ROCKER
5692~
5661-5691
~5660
277-35001-03 PIN, ROCKER
220 277-36101-00 ROCKER ARM, INTAKE
225 277-36102-00 ROCKER ARM, EXHAUST
230 014-90500-10 ADJUST SCREW
231 014-90500-10 ADJUST SCREW
240 017-00500-20 NUT
241 017-00500-20 NUT
290 011-00600-20 FLANGE BOLT
310 277-30111-01 MUFFLER
315 277-37601-01 SPARK ARRESTOR
316 015-00400-60 TAPPING SCREW
320 277-34201-11 MUFFLER COVER
277-34201-01 MUFFLER COVER
340 277-35201-03 GASKET, MUFFLER
350 980-20082-80 FLANGE NUT
360 015-20600-90 TAPPING BOLT
361 011-00600-10 FLANGE BOLT
365 011-00801-50 FLANGE BOLT
385 277-37203-01 SCREEN CP
387 015-00400-60 TAPPING SCREW
540 277-32902-H1 INSULATOR
550 277-35902-H3 GASKET, INSULATOR
5753~
~5752
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SECTION 4
INTAKE and EXHAUST GROUP
FIG. 410
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SECTION 4
INTAKE and EXHAUST GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
510 277-32611-00 AIR CLEANER AY
-200 277-32601-08 BASE CP
-220 277-32604-08 PACKING
-250 277-32602-08 COVER CP
-260 277-32609-08 LABEL
520 277-32603-08 ELEMENT
570 002-38060-00 FLANGE NUT
580 011-00600-50 FLANGE BOLT
850 085-10800-00 RUBBER PIPE
1
1
1
1
1
1
2
1
1
410
410
410
410
410
410
410
410
410
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SECTION 5
GOVERNOR GROUP
FIG. 500
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SECTION 5
GOVERNOR GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
10
20
277-42301-13 GOVERNOR LEVER
277-42201-33 GOVERNOR SHAFT
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
500
5600~
5539-5599 500
~5538
500
277-42201-23 GOVERNOR SHAFT
277-42201-13 GOVERNOR SHAFT
277-42701-01 GOVERNOR ROD CP
277-42801-13 ROD SPRING
003-13050-00 CLIP
013-00602-40 BOLT AND WASHER
018-60600-20 NUT
279-42502-23 GOVERNOR SPRING
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
500
30
40
50
60
70
80
310 277-43301-13 SPEED CONTROL LEVER
340 277-43501-03 STOP PLATE
350 020-00601-70 WASHER
355 021-70600-70 FRICTION WASHER
360 014-00601-80 SCREW
370 002-17060-00 NUT
375 237-45004-23 SPRING, ADJUST
435 277-46001-01 SPEED CONTROL BRACKET
450 002-35060-00 SELF LOCK NUT
485 011-00600-20 FLANGE BOLT
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SECTION 6
COOLING and STARTING GROUP
FIG. 600
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- 18 -
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SECTION 6
COOLING and STARTING GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
10
20
40
60
277-51201-11
073-20051-40 LABEL, TRADEMARK
BLOWER HOUSING
1
1
4
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
4
600
600
600
011-00600-30
277-52711-11
277-52711-01
277-52702-03 BAFFLE 2, HEAD
001-04061-60 FLANGE BOLT
011-00600-20
011-00600-20
269-50201-30 RECOIL STARTER AY
270-50115-08 SPRIAL SPRING
269-50120-08 REEL
269-50112-08
261-50100-08 STARTER KNOB
270-50125-08 RATCHET
227-50131-08 FRICTION SPRING
269-50145-18 STARTER PULLEY
270-50261-08 RATCHET GUIDE
227-50152-08 SET SCREW
FLANGE BOLT
BAFFLE 1, CASE
BAFFLE 1, CASE
5631~
~5630
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
61
80
5631~
~5630
FLANGE BOLT
FLANGE BOLT
81
210
-1
-2
-3
-4
-5
-6
-11
-35
-49
220
STARTER ROPE
011-00600-10
FLANGE BOLT
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SECTION 7
FUEL, LUBRICATION GROUP
FIG. 700
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SECTION 7
FUEL, LUBRICATION GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
10
20
23
30
40
48
60
63
80
90
277-60101-11 FUEL TANK CP
073-20051-81 LABEL, WARNING
277-95101-03 LABEL, MODEL
043-04400-50 FUEL TANK CAP
064-13600-10 FUEL FILTER
050-51200-20 UNION
002-38060-00 FLANGE NUT
011-00601-30 FLANGE BOLT
X85-10612-40 RUBBER PIPE
X56-11000-30 HOSE CLAMP
1
1
1
1
1
1
2
1
1
2
1
700
700
700
700
700
700
700
700
700
700
700
224 277-43801-01 CHOKE LEVER CP
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SECTION 7
FUEL, LUBRICATION GROUP
FIG. 710
210
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- 22 -
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SECTION 7
FUEL, LUBRICATION GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
210
-1
-2
-3
-5
277-62301-10 CARBURETOR AY
277-62535-08 THROTTLE VALVE
209-62351-08 SCREW
277-62525-08 CHOKE VALVE
246-62420-08 PILOT JET
277-62520-08 CHOKE LEVER
277-62530-08 THROTTLE SHAFT
227-62451-08 BOLT
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
710
#40
-8
-11
-12
-14
-15
-16
-17
-18
-19
-20
-22
-24
-28
-41
-44
-45
277-62500-08 NEEDLE
277-62515-08 PIN
277-62506-08 FLOAT BODY
214-62450-08 PLACKING
214-62540-08 CHAMMBER PACKING
226-62506-08 FLOAT AY
277-62440-08 MAIN NOZZLE
277-62402-08 MAIN JET
226-62701-18 CLIP
277-62360-08 BOLT
230-62446-08 SPRING
248-62410-08 AIR JET
106-62410-08 AIR JET, PILOT
#81.3
-104 236-62541-08 PACKING
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SECTION 8
ELECTRIC DEVICE GROUP
F
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SECTION 8
ELECTRIC DEVICE GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
10
11
30
50
60
70
277-79230-11 FLYWHEEL
1
1
2
1
1
2
1
1
1
1
2
1
800
800
800
800
800
800
800
800
800
800
800
800
277-79430-01 IGNITION COIL
001-14062-50 BOLT AND WASHER
277-73102-H1 WIRE 2 CP
X66-00003-61 SWITCH AY
015-00400-90 TAPPING SCREW
100 065-01401-50 SPARK PLUG
110 065-50002-70 SPARK PLUG CAP
700 277-76301-11 OIL SENSOR
705 KU3-11043-11 FLOAT C/U CP3
740 001-14061-60 BOLT AND WASHER
741 015-20500-10 TAPPING SCREW
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SECTION 9
ACCESSORY GROUP
FIG. 900
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SECTION 9
ACCESSORY GROUP
REF. PART NO.
DESCRIPTION
QTY. REMARKS
FROM-TO FIG.
10 227-90301-H0 ACCESSORY TOOL KIT
1
900
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