Subaru Robin Power Products Robin Pkx401 User Manual

PARTS  
MANUAL  
Model  
PKX401  
PUMP  
PUB-PP  
Rev. 06/02  
HOW TO USE THIS MANUAL  
Robin engines are identied by MODEL, SPECIFICATION, and CODE NUMBER. For each  
model there may be many different versions called specications. Each specication 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 signicant difference.  
In order the identify the correct service part number, it is important to conrm the specica-  
tion and code numbers for your engine. The specication 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:  
PKX 401  
X X X X  
SPEC NO. (11 digits)  
CODE NO. (4 digits)  
PRODUCT NO. (15 digits)  
PKX401  
- 3 -  
06-02  
MANUAL LAYOUT  
1
4
3
2
1
3
9
6
7
2
5
4
8
1. SECTION NAME  
Parts are broadly classied 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 identies 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 specication,  
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.  
PKX401  
- 4 -  
06-02  
GROUP INDEX  
Group Name  
Page  
PUMP FROUP............................................................................................ 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  
PKX401  
- 5 -  
06-02  
SECTION 1  
PUMP GROUP  
FIG. 100  
PKX401  
- 6 -  
06-02  
SECTION 1  
PUMP GROUP  
REF PART NO  
DESCRIPTION  
PUMP CASING  
O RING  
VOLUTE CASING  
IMPELLER  
MECHANICAL SEAL  
ADJUSTING WASHER  
O RING  
QTY REMARKS  
FROM - TO FIG  
100  
110  
115  
120  
130  
140  
145  
150  
170  
180  
210  
280  
285  
310  
320  
410  
420  
510  
520  
610  
670  
675  
680  
681  
684  
686  
690  
691  
695  
910  
470-01165-53  
1
1
1
1
1
3
1
2
12  
1
4
4
1
1
1
1
1
3
1
4
1
1
4
4
4
4
4
4
1
471-00000-41  
470-01107-17  
470-01156-64  
470-01157-64  
470-01100-81  
471-00000-40  
470-01180-79  
471-00000-42  
470-01157-63  
471-00000-43  
471-00000-02  
470-01113-65  
470-01173-63  
471-01161-51  
470-01107-50  
470-01112-17  
471-00000-46  
470-01177-47  
470-01105-15  
470-01159-23  
471-00000-61  
471-00000-71  
471-00000-68  
471-00000-66  
471-00000-38  
471-00000-57  
471-00000-36  
470-01165-69  
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  
BOLT AND WASHER  
FLANGE BRACKET  
SOCKET BOLT  
SEAL WASHER  
SUCTION OR DELIVERY  
CHECK VALVE  
DELIVERY FLANGE  
DELIVERY FLANGE PACK  
STRAINER  
HOSE BAND  
FRAME AY  
CUSHION RUBBER  
CUSHION RUBBER  
BOLT AND WASHER  
BOLT AND WASHER  
SPRING WASHER  
WASHER  
NUT  
NUT  
BOLT AND WASHER  
LABEL  
PKX401  
- 7 -  
06-02  
SECTION 2  
CRANKCASE GROUP  
FIG. 200  
PKX401  
- 8 -  
06-02  
SECTION 2  
CRANKCASE GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
w/ Oil Sensor  
FROM-TO FIG.  
200  
10 279-10102-21 CRANKCASE CP  
20 237-14202-03 VALVE GUIDE  
26 277-16010-01 STEM SEAL  
30 044-03001-60 OIL SEAL  
40 060-03003-40 BALL BEARING  
50 277-15011-03 PIPE KNOCK  
60 010-50802-50 STUD  
70 010-50604-10 STUD  
75 044-00600-20 OIL SEAL  
80 040-11400-30 PLUG  
90 021-11400-20 GASKET  
1
2
1
1
1
2
2
2
1
2
2
1
1
1
1
1
1
1
1
1
7
1
1
4
1
1
1
2
4
1
1
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
200  
210 279-11001-11 MAIN BEARING COVER CP  
220 044-03001-60 OIL SEAL  
230 060-03000-20 BALL BEARING  
250 277-45004-11 GOVERNOR GEAR CP  
260 263-41901-03 GOVERNOR SLEEVE  
270 279-63601-03 OIL GAUGE  
275 279-65001-03 FILLER PLUG  
280 021-32000-50 GASKET  
281 021-32000-50 GASKET  
300 001-04083-50 FLANGE BOLT  
610 279-13001-01 CYLINDER HEAD CP  
620 279-15001-13 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  
850 085-10800-00 RUBBER PIPE  
960 279-99001-07 GASKET SET  
EX0-20000-01 GASKET IN A TUBE  
Gasket Sets include the following:  
Fig. 200 items 90, 280, 620 and 690  
Fig. 400 items 340 and 550  
PKX401  
- 9 -  
06-02  
SECTION 3  
CRANKSHAFT GROUP  
FIG. 300  
PKX401  
- 10 -  
06-02  
SECTION 3  
CRANKSHAFT GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
10 279-20301-11 CRANKSHAFT  
50 018-01800-10 FLANGE NUT  
70 032-30300-10 WOODRUFF KEY  
310 279-22501-20 CONNECTING ROD AY  
320 279-23001-03 CONNECTING ROD BOLT  
350 279-23301-03 PISTON PIN  
360 279-23401-03 PISTON  
1
1
1
1
2
1
1
1
2
300  
300  
300  
300  
300  
300  
300  
300  
300  
370 279-23511-07 PISTON RING SET  
380 056-51800-10 CLIP  
PKX401  
- 11 -  
06-02  
SECTION 4  
INTAKE and EXHAUST GROUP  
FIG. 400  
PKX401  
- 12 -  
06-02  
SECTION 4  
INTAKE and EXHAUST GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
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  
10 279-31601-01 CAMSHAFT CP  
25 277-35101-03 PIN, camshaft  
27 024-00600-10 O RING  
34 277-38601-03 PIN, spring  
35 279-36401-03 RELEASE LEVER  
37 277-36501-03 CLIP  
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
2
2
1
1
1
2
1
1
1
2
1
38 277-38701-03 RETURN SPRING  
60 279-33601-03 VALVE SPRING  
70 132-09KA0-40 RETAINER VALVE SPRING  
80 279-33401-13 INTAKE VALVE  
90 279-33501-13 EXHAUST VALVE  
95 132-10KA0-31 COLLET VALVE  
150 279-35601-01 TIMING CHAIN CP  
160 277-36911-03 TENTIONER  
163 277-37101-03 SPRING, tentioner  
166 277-36902-03 PIN, tentioner  
170 277-36913-13 CHAIN GUIDE  
200 277-35001-03 PIN, rocker  
220 277-36101-00 ROCKER ARM AY, intake  
225 277-36102-00 ROCKER ARM AY, 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  
310 279-30101-11 MUFFLER CP  
320 279-34201-11 MUFFLER COVER CP  
340 277-35201-03 GASKET, mufer  
350 980-20082-80 FLANGE NUT  
360 015-20600-90 TAPPING BOLT  
361 011-00600-10 FLANGE BOLT  
365 011-00801-50 FLANGE BOLT  
440 277-37001-03 DEFLECTOR  
445 015-00400-60 TAPPING SCREW  
510 279-32612-00 AIR CLEANER AY  
540 279-32901-11 INSULATOR CP  
550 279-35901-13 GASKET, insulator  
570 002-38060-00 FLANGE NUT  
580 011-00600-50 FLANGE BOLT  
PKX401  
- 13 -  
06-02  
SECTION 4  
INTAKE and EXHAUST GROUP  
FIG. 410  
PKX401  
- 14 -  
06-02  
SECTION 4  
INTAKE and EXHAUST GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
510 279-32611-00 AIR CLEANER AY  
-200 279-32630-08 CASE  
-220 279-32650-08 GASKET  
-250 279-32640-08 COVER  
-260 279-32730-08 LABEL  
520 279-32603-08 ELEMENT  
570 002-38060-00 FLANGE NUT  
580 011-00600-50 FLANGE BOLT  
1
1
1
1
1
1
1
1
410  
410  
410  
410  
410  
410  
410  
410  
PKX401  
- 15 -  
06-02  
SECTION 5  
GOVERNOR GROUP  
FIG. 500  
PKX401  
- 16 -  
06-02  
SECTION 5  
GOVERNOR GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
10 279-42301-13 GOVERNOR LEVER  
20 277-42201-13 GOVERNOR SHAFT  
30 279-42701-01 GOVERNOR ROD CP  
40 277-42801-13 ROD SPRING  
50 003-13050-00 CLIP  
60 001-14062-50 BOLT and WASHER AY  
70 018-60600-20 NUT  
80 279-42502-03 GOVERNOR SPRING  
310 279-43302-01 SPEED CONTROL LEVER  
340 277-43501-03 STOP PLATE  
350 020-00601-70 WASHER  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
355 021-70600-70 FRICTION WASHER  
360 004-31064-00 SCREW  
365 237-45004-23 SPRING, adjust  
370 002-17060-00 NUT  
395 277-43901-03 CLAMP  
396 004-36051-60 SCREW and WASHER AY  
435 277-46001-01 SPEED CONTROL BRKT CP  
440 004-31040-80 SCREW  
450 002-35060-00 SELF LOCK NUT  
480 267-45101-03 RETURN SPRING  
485 011-00600-20 FLANGE BOLT  
PKX401  
- 17 -  
06-02  
SECTION 6  
COOLING and STARTING GROUP  
FI
PKX401  
- 18 -  
06-02  
SECTION 6  
COOLING and STARTING GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
Yellow  
FROM-TO FIG.  
10 279-51201-01 BLOWER HOUSING  
20 073-20051-40 LABEL, trademark  
40 011-00600-20 FLANGE BOLT  
60 279-52711-11 BAFFLE 1 CP, case  
61 279-52702-03 BAFFLE 2, head  
80 001-65081-20 BOLT  
81 011-00600-20 FLANGE BOLT  
210 279-50202-00 RECOIL STARTER AY  
-1 226-50716-08 SPIRAL SPRING  
-2 279-50120-08 REEL  
-3 279-5010-08  
-4 226-50701-08 STARTER KNOB  
-5 279-50125-08 RATCHET  
-6 226-50731-08 FRICTION SPRING  
-7 226-50752-08 RATCHET SPRING  
-11 279-50145-08 STARTER PULLEY  
-35 226-50741-08 FRICTION PLATE  
-49 226-50753-08 CENTER SCREW  
220 011-00600-10 FLANGE BOLT  
1
1
4
1
1
1
1
1
1
1
1
1
2
1
2
1
1
1
4
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
STARTER ROPE  
PKX401  
- 19 -  
06-02  
SECTION 7  
FUEL, LUBRICATION GROUP  
FIG. 700  
50  
PKX401  
- 20 -  
06-02  
SECTION 7  
FUEL, LUBRICATION GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
10 279-60101-11 FUEL TANK CP  
20 073-20051-80 LABEL, warning  
23 279-95101-03 LABEL, model  
30 043-04300-60 FUEL TANK CAP CP  
40 064-13600-10 FUEL FILTER  
45 064-80007-00 FUEL GAUGE CP  
46 014-50500-40 SCREW, countersink  
48 050-51200-20 UNION  
50 279-62102-00 FUEL STRAINER AY  
60 002-38080-00 FLANGE NUT  
63 011-00802-50 FLANGE BOLT  
80 085-10600-00 RUBBER PIPE  
90 056-11100-20 HOSE CLAMP  
224 277-43801-01 CHOKE LEVER CP  
1
1
1
1
1
1
2
1
1
2
2
1
2
1
Yellow  
700  
700  
700  
700  
700  
700  
700  
700  
700  
700  
700  
700  
700  
700  
leakproof  
PKX401  
- 21 -  
06-02  
SECTION 7  
FUEL, LUBRICATION GROUP  
FIG. 710  
PKX401  
- 22 -  
06-02  
SECTION 7  
FUEL, LUBRICATION GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
710  
210 279-62301-00 CARBURETOR AY  
-1 279-62535-08 THROTTLE VALVE  
-2 251-62450-08 SCREW  
-3 279-62525-08 CHOKE VALVE  
-5 279-62420-08 SLOW JET  
-6 279-62354-08 SCREW, idle adjusting  
-7 251-62449-08 SPRING  
-8 279-62520-08 CHOKE SHAFT  
-11 279-62530-08 SHAFT AY  
-12 251-62453-08 SCREW  
-15 279-62515-08 PIN FLOAT LEVER  
-16 279-62550-08 CHAMBER FLOAT  
-17 251-62350-08 GASKET  
-18 279-62540-08 GASKET CHAMBER  
-19 279-62505-08 FLOAT AY  
-22 279-62400-08 MAIN JET  
-28 279-62355-08 DRAIN SCREW  
-32 279-62561-08 BUSH  
-40 279-62353-08 ADJUSTING SCREW  
-41 279-62445-08 SPRING  
-60 279-62562-08 COLLAR  
1
1
2
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  
710  
710  
-104 279-62552-08 GASKET  
-121 251-62480-08 CAP  
-151 279-62452-08 O-RING  
-152 279-62451-08 O-RING  
PKX401  
- 23 -  
06-02  
SECTION 8  
ELECTRIC DEVICE GROUP  
FIG. 800  
PKX401  
- 24 -  
06-02  
SECTION 8  
ELECTRIC DEVICE GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
10 279-79230-01 FLYWHEEL CP  
11 279-79430-01 IGNITION COIL CP  
12 279-79301-01 LAMP COIL CP  
30 001-14062-50 BOLT and WASHER AY  
35 004-35062-00 SCREW and WASHER AY  
50 277-73102-01 WIRE 2 CP  
1
1
1
2
2
1
1
2
1
1
800  
800  
800  
800  
800  
800  
800  
800  
800  
800  
60 066-00003-71 SWITCH AY  
70 015-00400-90 TAPPING SCREW  
100 065-01401-50 SPARK PLUG  
110 065-50002-70 SPARK PLUG CAP  
PKX401  
- 25 -  
06-02  
SECTION 8  
ELECTRIC DEVICE GROUP  
FIG. 810  
PKX401  
- 26 -  
06-02  
SECTION 8  
ELECTRIC DEVICE GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
700 279-76301-21 OIL SENSOR CP  
705 KU3-11043-01 FLOAT  
740 001-14061-60 BOLT and WASHER AY  
741 011-00600-20 FLANGE BOLT  
770 214-79006-01 CLAMP CP  
1
1
2
1
1
1
810  
810  
810  
810  
810  
810  
775 011-00600-10 FLANGE BOLT  
PKX401  
- 27 -  
06-02  
SECTION 9  
ACCESSORY GROUP  
FIG. 900  
PKX401  
- 28 -  
06-02  
SECTION 9  
ACCESSORY GROUP  
REF. PART NO.  
DESCRIPTION  
QTY. REMARKS  
FROM-TO FIG.  
10 227-90301-H0 ACCESSORY TOOL KIT  
1
900  
PKX401  
- 29 -  
06-02  
PRINTED IN THE USA  

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