PARTS
MANUAL
Model
PKX301
PUMP
PUB-PP5873
Rev. 07/03
940 Lively Blvd. • Wood Dale, IL 60191 • Phone: 630-350-8200 • Fax: 630-350-8212
e-mail: sales@robinamerica.com • www.robinamerica.com
© Copyright 2003 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 difference 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 1 3 0
SPEC NO. (11 digits) CODE NO. (4 digits)
PRODUCT NO. (15 digits)
PKX301 - 3 - 07-03
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.
PKX301 - 4 - 07-03
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
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
PKX301 - 5 - 07-03
SECTION 1 PUMP GROUP
FIG. 100
PKX301 - 6 - 07-03
SECTION 1 PUMP GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
110 470-01127-95 CASING 1 w/ oil sensor
115 470-01139-89 O RING 1
120 470-01143-79 INNER CASING 1 100
130 470-01150-57 IMPELLER 1
140 470-01106-64 MECHANICAL SEAL 1 100
145 470-01104-91 ADJUSTING WASHER 3
150 470-01150-15 O RING 1 100
170 470-01180-78 PLUG AY 1
172 471-00000-05 O RING 1 100
180 471-00000-50 BOLT AND WASHER 4
210 470-01127-96 FLANGE BRACKET 1 100
280 471-00000-03 SOCKET BOLT 4
285 471-00000-02 SEAL WASHER 4 100
310 470-01128-76 SUCTION FLANGE 1 100
314 471-00000-50 BOLT AND WASHER 3
320 470-01127-99 CHECK VALVE 1 100
410 470-01133-37 DELIVERY FLANGE 1
414 471-00000-34 BOLT AND WASHER 4
420 470-01105-84 PACKING, DELIVERY 1 100
460 470-01180-79 PLUG AY 1 100
462 471-00000-09 O RING 1
510 470-01181-95 STRAINER 1
520 471-00000-06 HOSE BAND 3 100
610 470-01176-91 FRAME 1 100
670 470-01105-15 CUSHION RUBBER 4
680 471-00000-65 BOLT AND WASHER 4 100
681 471-00000-71 BOLT AND WASHER 4
684 471-00000-68 SPRING WASHER 4 100
686 471-00000-66 WASHER 4
690 471-00000-57 NUT 4 100
691 471-00000-57 NUT 4
910 470-01165-65 LABEL, PUMP NAME 1 100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
PKX301 - 7 - 07-03
SECTION 2 CRANKCASE GROUP
FIG. 200
PKX301 - 8 - 07-03
SECTION 2 CRANKCASE GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
10 277-10102-41 CRANKCASE CP 1
277-10102-31 CRANKCASE CP 1 ~5691 200
20 237-14201-03 VALVE GUIDE 2 200
26 277-16010-01 STEM SEAL 1
30 044-02502-00 OIL SEAL 1 200
40 060-02800-21 BALL BEARING 1
060-02800-20 BALL BEARING 1 ~5691 200
50 277-15011-03 PIPE KNOCK 2
60 010-50802-50 STUD 2 200
70 010-50603-51 STUD 2
75 044-00600-20 OIL SEAL 1 200
80 040-11400-30 PLUG 2
90 021-11400-20 GASKET 2 200
210 277-11001-31 MAIN BEARING COVER 1 5692~ 200
277-11001-21 MAIN BEARING COVER 1 5753-5691 200
277-11001-11 MAIN BEARING COVER 1 ~5752 200
220 044-02502-10 OIL SEAL 1
230 060-02501-40 BALL BEARING 1
060-02500-10 BALL BEARING 1 ~5691 200
250 277-45004-21 GOVERNOR GEAR 1 200
260 263-41901-03 GOVERNOR SLEEVE 1
270 277-63601-13 OIL GAUGE 1
275 277-65001-03 FILLER PLUG 1 200
280 021-31600-20 GASKET 1 200
281 021-31600-20 GASKET 1
300 001-04083-50 FLANGE BOLT 6 200
610 277-13001-01 CYLINDER HEAD 1
620 277-15001-13 GASKET, HEAD 1 200
630 011-00802-40 FLANGE BOLT 4
631 001-04083-50 FLANGE BOLT 1 200
680 277-15501-01 ROCKER COVER CP 1
690 277-16001-03 GASKET, ROCKER COVER 1 200
700 277-15011-03 PIPE KNOCK 2
710 011-00600-20 FLANGE BOLT 4 200
960 227-99001-07 GASKET SET 1
5692~ 200
200
5692~ 200
200
200
200
200
5692~ 200
200
200
200
200
200
200
200
200
Gasket Sets include the following:
Fig. 200 items 90, 280, 620 and 690
Fig. 400 items 340 and 550
PKX301 - 9 - 07-03
SECTION 3 CRANKSHAFT GROUP
FIG. 300
PKX301 - 10 - 07-03
SECTION 3 CRANKSHAFT GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
10 277-20301-21 CRANKSHAFT 1
277-20301-11 CRANKSHAFT 1 5692-5783 300
277-20301-01 CRANKSHAFT 1 ~5691 300
50 018-01400-20 FLANGE NUT 1
70 032-30300-10 WOODRUFF KEY 1 300
310 277-22501-10 CONNECTING ROD 1
320 277-23001-03 CONNECTING ROD BOLT 2 300
350 277-23301-03 PISTON PIN 1
360 277-23401-03 PISTON 1 300
370 277-23511-07 PISTON PRING SET 1
380 056-51600-10 CLIP 2 300
5784~ 300
300
300
300
300
PKX301 - 11 - 07-03
SECTION 4 INTAKE and EXHAUST GROUP
FIG. 400
PKX301 - 12 - 07-03
SECTION 4 INTAKE and EXHAUST GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
10 277-31601-01 CAMSHAFT 1
25 277-35101-03 PIN, CAMSHAFT 1 400
27 024-00600-10 O RING 1
34 277-38601-03 PIN, SPRING 1 400
35 277-36401-03 RELEASE LEVER 1
37 277-36501-03 CLIP 1 400
38 277-38701-03 RETURN SPRING 1 400
60 279-33601-03 VALVE SPRING 2
70 269-33701-03 SPRING RETAINER 2
80 277-33401-13 INTAKE VALVE 1 400
90 277-33501-13 EXHAUST VALVE 1
95 132-10KA0-31 COLLET VALVE 4 400
150 277-35601-01 TIMING CHAIN 1
160 277-36911-03 TENTIONER 1 400
163 277-37101-03 SPRING, TENTIONER 1
166 277-36902-03 PIN, TENTIONER 1 400
170 277-36913-13 CHAIN GUIDE 1 400
200 277-35001-23 PIN, ROCKER 1
277-35001-13 PIN, ROCKER 1 5661-5691 400
277-35001-03 PIN, ROCKER 1 ~5660 400
220 277-36101-00 ROCKER ARM, INTAKE 1 400
225 277-36102-00 ROCKER ARM, EXHAUST 1
230 014-90500-10 ADJUST SCREW 1
231 014-90500-10 ADJUST SCREW 1 400
240 017-00500-20 NUT 1 400
241 017-00500-20 NUT 1
290 011-00600-20 FLANGE BOLT 1
310 277-30111-01 MUFFLER 1 400
315 277-37601-01 SPARK ARRESTOR 1 400
316 015-00400-60 TAPPING SCREW 1 400
320 277-34201-11 MUFFLER COVER 1
277-34201-01 MUFFLER COVER 1 ~5752 400
340 277-35201-03 GASKET, MUFFLER 1
350 980-20082-80 FLANGE NUT 2 400
360 015-20600-90 TAPPING BOLT 2 400
361 011-00600-10 FLANGE BOLT 1
365 011-00801-50 FLANGE BOLT 1 400
385 277-37203-01 SCREEN CP 1 400
387 015-00400-60 TAPPING SCREW 2 400
540 277-32902-H1 INSULATOR 1
550 277-35902-H3 GASKET, INSULATOR 1 400
400
400
400
400
400
400
400
400
5692~ 400
400
400
400
400
5753~ 400
400
400
400
PKX301 - 13 - 07-03
SECTION 4 INTAKE and EXHAUST GROUP
FIG. 410
PKX301 - 14 - 07-03
SECTION 4 INTAKE and EXHAUST GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
510 277-32611-00 AIR CLEANER AY 1
-200 277-32601-08 BASE CP 1 410
-220 277-32604-08 PACKING 1 410
-250 277-32602-08 COVER CP 1
-260 277-32609-08 LABEL 1 410
520 277-32603-08 ELEMENT 1
570 002-38060-00 FLANGE NUT 2 410
580 011-00600-50 FLANGE BOLT 1 410
850 085-10800-00 RUBBER PIPE 1
410
410
410
410
PKX301 - 15 - 07-03
SECTION 5 GOVERNOR GROUP
FIG. 500
PKX301 - 16 - 07-03
SECTION 5 GOVERNOR GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
10 277-42301-13 GOVERNOR LEVER 1
20 277-42201-33 GOVERNOR SHAFT 1
277-42201-23 GOVERNOR SHAFT 1 5539-5599 500
277-42201-13 GOVERNOR SHAFT 1 ~5538 500
30 277-42701-01 GOVERNOR ROD CP 1 500
40 277-42801-13 ROD SPRING 1
50 003-13050-00 CLIP 1 500
60 013-00602-40 BOLT AND WASHER 1
70 018-60600-20 NUT 1 500
80 279-42502-23 GOVERNOR SPRING 1
310 277-43301-13 SPEED CONTROL LEVER 1 500
340 277-43501-03 STOP PLATE 1
350 020-00601-70 WASHER 1 500
355 021-70600-70 FRICTION WASHER 1 500
360 014-00601-80 SCREW 1
370 002-17060-00 NUT 1 500
375 237-45004-23 SPRING, ADJUST 1
435 277-46001-01 SPEED CONTROL BRACKET 1
450 002-35060-00 SELF LOCK NUT 1 500
485 011-00600-20 FLANGE BOLT 2 500
500
5600~ 500
500
500
500
500
500
500
500
PKX301 - 17 - 07-03
SECTION 6 COOLING and STARTING GROUP
FIG. 600
PKX301 - 18 - 07-03
SECTION 6 COOLING and STARTING GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
10 277-51201-11 BLOWER HOUSING 1
20 073-20051-40 LABEL, TRADEMARK 1
40 011-00600-30 FLANGE BOLT 4 600
60 277-52711-11 BAFFLE 1, CASE 1
277-52711-01 BAFFLE 1, CASE 1 ~5630 600
61 277-52702-03 BAFFLE 2, HEAD 1 600
80 001-04061-60 FLANGE BOLT 1
011-00600-20 FLANGE BOLT 1 ~5630 600
81 011-00600-20 FLANGE BOLT 1 600
210 269-50201-30 RECOIL STARTER AY 1
-1 270-50115-08 SPRIAL SPRING 1 600
-2 269-50120-08 REEL 1
-3 269-50112-08 STARTER ROPE 1 600
-4 261-50100-08 STARTER KNOB 1
-5 270-50125-08 RATCHET 2 600
-6 227-50131-08 FRICTION SPRING 1
-11 269-50145-18 STARTER PULLEY 1 600
-35 270-50261-08 RATCHET GUIDE 1
-49 227-50152-08 SET SCREW 1 600
220 011-00600-10 FLANGE BOLT 4
600
600
5631~ 600
5631~ 600
600
600
600
600
600
600
PKX301 - 19 - 07-03
SECTION 7 FUEL, LUBRICATION GROUP
FIG. 700
PKX301 - 20 - 07-03
SECTION 7 FUEL, LUBRICATION GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
10 277-60101-11 FUEL TANK CP 1
20 073-20051-81 LABEL, WARNING 1 700
23 277-95101-03 LABEL, MODEL 1
30 043-04400-50 FUEL TANK CAP 1 700
40 064-13600-10 FUEL FILTER 1
48 050-51200-20 UNION 1 700
60 002-38060-00 FLANGE NUT 2 700
63 011-00601-30 FLANGE BOLT 1
80 X85-10612-40 RUBBER PIPE 1
90 X56-11000-30 HOSE CLAMP 2 700
224 277-43801-01 CHOKE LEVER CP 1
700
700
700
700
700
700
PKX301 - 21 - 07-03
SECTION 7 FUEL, LUBRICATION GROUP
FIG. 710
210
PKX301 - 22 - 07-03
SECTION 7 FUEL, LUBRICATION GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
210 277-62301-10 CARBURETOR AY 1
-1 277-62535-08 THROTTLE VALVE 1
-2 209-62351-08 SCREW 1
-3 277-62525-08 CHOKE VALVE 1
-5 246-62420-08 PILOT JET 1 #40
-8 277-62520-08 CHOKE LEVER 1 710
-11 277-62530-08 THROTTLE SHAFT 1
-12 227-62451-08 BOLT 1 710
-14 277-62500-08 NEEDLE 1
-15 277-62515-08 PIN 1 710
-16 277-62506-08 FLOAT BODY 1
-17 214-62450-08 PLACKING 1 710
-18 214-62540-08 CHAMMBER PACKING 1
-19 226-62506-08 FLOAT AY 1 710
-20 277-62440-08 MAIN NOZZLE 1
-22 277-62402-08 MAIN JET 1 #81.3 710
-24 226-62701-18 CLIP 1 710
-28 277-62360-08 BOLT 1
-41 230-62446-08 SPRING 1
-44 248-62410-08 AIR JET 1 710
-45 106-62410-08 AIR JET, PILOT 1
-104 236-62541-08 PACKING 1 710
710
710
710
710
710
710
710
710
710
710
710
710
710
PKX301 - 23 - 07-03
SECTION 8 ELECTRIC DEVICE GROUP
FIG. 800
PKX301 - 24 - 07-03
SECTION 8 ELECTRIC DEVICE GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
10 277-79230-11 FLYWHEEL 1
11 277-79430-01 IGNITION COIL 1
30 001-14062-50 BOLT AND WASHER 2 800
50 277-73102-H1 WIRE 2 CP 1
60 X66-00003-61 SWITCH AY 1 800
70 015-00400-90 TAPPING SCREW 2
100 065-01401-50 SPARK PLUG 1 800
110 065-50002-70 SPARK PLUG CAP 1
700 277-76301-11 OIL SENSOR 1 800
705 KU3-11043-11 FLOAT C/U CP3 1
740 001-14061-60 BOLT AND WASHER 2 800
741 015-20500-10 TAPPING SCREW 1
800
800
800
800
800
800
800
PKX301 - 25 - 07-03
SECTION 9 ACCESSORY GROUP
FIG. 900
PKX301 - 26 - 07-03
SECTION 9 ACCESSORY GROUP
REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.
10 227-90301-H0 ACCESSORY TOOL KIT 1 900
PKX301 - 27 - 07-03
PRINTED IN THE USA
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