PARTS
MANUAL
Models
EX13, EX17, EX21 ENGINE
PUB-EP1676
Rev. 07/05
940 Lively Blvd. • Wood Dale, IL 60191 • Phone: 630-350-8200 • Fax: 630-350-8212
e-mail: sales@robinamerica.com • www.robinamerica.com © Copyright 2005 Robin America, Inc.
EX13, EX17, EX21 |
- 2 - |
07-05 |
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 specification 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) |
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PRODUCT NO. (15 digits)
EX13, EX17, EX21 |
- 3 - |
07-05 |
MANUAL LAYOUT
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1. |
SECTION NAME |
Parts are broadly classified according to their functions. |
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Refer to the Group Index (table of contents) for respective section name. |
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2. |
FIG. No. |
The FIG. number indexes the reference and part numbers to the illustration. Figure numbers |
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that vary only in the tens place (i.e..: 700 and 710) are in a group of the same section |
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(i.e..:Electrical Device Group). |
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3. |
REF. No . |
The Reference number identifies the part illustration with the corresponding part number in the |
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part list. |
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4. |
SUBASSEMBLY |
SUBASSEMBLY parts of part assembly are listed below the assembly part. The subassembly |
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part reference number is indicated by the number led by "-" such as "-1", "-2". |
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5. |
PART NUMBER |
It is the number assigned for sales unit. Use the PART No. when making an order. |
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6. |
DESCRIPTION |
It is designation of the part. |
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7. |
QTY. |
Quantity of each part used for each product. |
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8. |
REMARKS |
This gives a distinctive feature and/or a supplementary comment for the type, the specification, |
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and the part concerned. It also shows part number(s) interchangeable for the part. |
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9. |
FROM-TO |
This section shows the CODE No. to indicate the history of progress in which improved parts |
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have been introduced in the product. The FROM-TO CODE No. helps to identify PART No. |
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being employed in the product concerned. See the examples below: |
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-The part is used in the product irrespective of CODE No.
2101- |
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The part is used in the products with CODE No. of 2101 and after this number. |
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2100 |
The part is used in the products with CODE No. of 2100 and before this number. |
EX13, EX17, EX21 |
- 4 - |
07-05 |
GROUP INDEX |
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Group Name |
Page |
CRANKCASE GROUP............................................................................... |
6 |
CRANKSHAFT GROUP ............................................................................. |
8 |
INTAKE and EXHAUST GROUP.............................................................. |
10 |
GOVERNOR GROUP .............................................................................. |
18 |
COOLING and STARTING GROUP......................................................... |
22 |
FUEL, LUBRICANT GROUP.................................................................... |
26 |
CARBURETOR GROUP .......................................................................... |
28 |
ELECTRIC DEVICE GROUP .................................................................. |
32 |
ACCESSORY GROUP............................................................................. |
38 |
INDEX OF DESCRIPTION SYMBOLS
SYMBOL |
DESCRIPTION |
SYMBOL |
DESCRIPTION |
AY ........................... |
ASSEMBLY |
P= ........................... |
PITCH (in mm) |
CP........................... |
COMPLETE |
P.T.O. (PTO) ........... |
POWER TAKE OFF |
EX........................... |
EXPORT (from Japan) |
REF......................... |
REFERENCE |
FIG.......................... |
FIGURE |
R.H. (RH)................ |
RIGHT HAND SIDE |
FR........................... |
FRONT |
RR. ......................... |
REAR |
" .............................. |
INCH |
STD. ....................... |
STANDARD |
INCL. ...................... |
INCLUDE |
SW.......................... |
SWITCH |
~L............................ |
LITER |
T= ........................... |
THICKNESS (in mm) |
L= ........................... |
LENGTH (in. mm) |
UN .......................... |
UNIT |
L.H. (LH)................. |
LEFT-HAND SIDE |
U.S.......................... |
UNDER SIZE |
MECH..................... |
MECHANICAL |
~V ........................... |
VOLTAGE |
NO (NON)............... |
NONE |
~W .......................... |
WATT |
OPT......................... |
OPTIONAL |
W/ ........................... |
WITH |
O.S. ........................ |
OVER SIZE |
W/O ........................ |
WITHOUT |
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EX13, EX17, EX21 |
- 5 - |
07-05 |
SECTION 1 CRANKCASE GROUP
FIG. 100
EX13, EX17, EX21 |
- 6 - |
07-05 |
SECTION 1 |
CRANKCASE GROUP |
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REF. |
PART NO. |
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DESCRIPTION |
QTY. |
REMARKS |
FROM-TO |
FIG. |
10 |
276-10102-41 |
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CRANKCASE CP |
1 |
EX13, w/ oil sensor |
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100 |
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276-10101-41 |
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CRANKCASE CP |
1 |
EX13, w/o oil sensor |
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100 |
10 |
277-10102-41 |
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CRANKCASE CP |
1 |
EX17, w/ oil sensor |
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100 |
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277-10101-41 |
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CRANKCASE CP |
1 |
EX17, w/o oil sensor |
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100 |
10 |
278-10102-41 |
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CRANKCASE CP |
1 |
EX21, w/ oil sensor |
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100 |
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278-10101-41 |
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CRANKCASE CP |
1 |
EX21, w/o oil sensor |
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100 |
20 |
237-14202-03 |
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VALVE GUIDE |
2 |
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100 |
26 |
277-16010-01 |
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STEM SEAL |
1 |
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100 |
30 |
044-02502-00 |
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OIL SEAL |
1 |
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100 |
40 |
060-02800-21 |
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BALL BEARING |
1 |
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100 |
50 |
277-15011-03 |
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PIPE KNOCK |
2 |
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100 |
60 |
010-50802-50 |
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STUD |
2 |
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100 |
70 |
010-50603-51 |
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STUD |
2 |
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100 |
75 |
044-00600-20 |
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OIL SEAL |
1 |
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100 |
80 |
040-11400-30 |
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PLUG |
2 |
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100 |
90 |
021-11400-20 |
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GASKET |
2 |
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100 |
210 |
277-11002-21 |
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MAIN BEARING COVER CP |
1 |
SAE |
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100 |
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277-11001-31 |
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MAIN BEARING COVER CP |
1 |
Metric |
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100 |
220 |
044-02502-10 |
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OIL SEAL |
1 |
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100 |
230 |
060-02501-40 |
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BALL BEARING |
1 |
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100 |
250 |
277-45004-H1 |
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GOVERNOR GEAR CP |
1 |
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100 |
260 |
277-41901-03 |
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GOVERNOR SLEEVE |
1 |
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100 |
270 |
277-63601-13 |
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OIL GAUGE |
1 |
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100 |
275 |
277-65001-03 |
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FILLER PLUG |
1 |
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100 |
280 |
021-31600-20 |
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GASKET |
1 |
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100 |
281 |
021-31600-20 |
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GASKET |
1 |
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100 |
300 |
001-04083-50 |
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FLANGE BOLT |
6 |
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100 |
610 |
276-13001-01 |
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CYLINDER HEAD CP |
1 |
EX13, Old Style |
~2099999 |
100 |
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276-13001-11 |
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CYLINDER HEAD CP |
1 |
EX13, New Style |
2100000~ |
100 |
610 |
277-13001-01 |
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CYLINDER HEAD CP |
1 |
EX17, Old Style |
~2099999 |
100 |
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277-13001-11 |
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CYLINDER HEAD CP |
1 |
EX17, New Style |
2100000~ |
100 |
610 |
278-13001-01 |
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CYLINDER HEAD CP |
1 |
EX21, Old Style |
~2099999 |
100 |
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278-13001-11 |
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CYLINDER HEAD CP |
1 |
EX21, New Style |
2100000~ |
100 |
620 |
276-15001-13 |
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GASKET, head |
1 |
EX13 |
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100 |
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277-15001-23 |
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GASKET, head |
1 |
EX17 and EX21 |
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100 |
630 |
011-00802-40 |
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FLANGE BOLT |
4 |
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100 |
631 |
001-04083-50 |
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FLANGE BOLT |
1 |
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100 |
680 |
277-15501-01 |
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ROCKER COVER CP |
1 |
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100 |
690 |
277-16001-03 |
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GASKET, rocker cover |
1 |
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100 |
700 |
277-15011-03 |
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PIPE KNOCK |
2 |
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100 |
710 |
011-00600-20 |
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FLANGE BOLT |
4 |
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100 |
960 |
276-99001-07 |
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GASKET SET |
1 |
EX13 |
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100 |
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277-99001-07 |
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GASKET SET |
1 |
EX17 and EX21 |
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100 |
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EX0-20000-01 |
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GASKET IN A TUBE |
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EX13, EX17, EX21 |
- 7 - |
07-05 |
SECTION 2 CRANKSHAFT GROUP
FIG. 200
EX13, EX17, EX21 |
- 8 - |
07-05 |
SECTION 2 |
CRANKSHAFT GROUP |
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REF. |
PART NO. |
DESCRIPTION |
QTY. |
REMARKS |
FROM-TO |
FIG. |
10 |
276-20901-31 |
CRANKSHAFT CP |
1 |
3/4” key, 5/16 tap - EX13 |
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200 |
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276-21001-21 |
CRANKSHAFT CP |
1 |
5/8” Pump - EX13 |
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200 |
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276-21201-21 |
CRANKSHAFT CP |
1 |
SAE Taper - EX13 |
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200 |
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276-20201-31 |
CRANKSHAFT CP |
1 |
Metric 18mm |
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200 |
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276-20301-21 |
CRANKSHAFT CP |
1 |
Metric Pump 18mm |
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200 |
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276-20701-21 |
CRANKSHAFT CP |
1 |
Metric Taper |
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200 |
10 |
277-20901-21 |
CRANKSHAFT CP |
1 |
3/4” key, 5/16 tap - EX13 |
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200 |
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277-21001-21 |
CRANKSHAFT CP |
1 |
5/8” Pump - EX13 |
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200 |
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277-21201-21 |
CRANKSHAFT CP |
1 |
SAE Taper - EX13 |
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200 |
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277-20201-21 |
CRANKSHAFT CP |
1 |
Metric 20mm |
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200 |
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277-20301-21 |
CRANKSHAFT CP |
1 |
Metric Pump 20mm |
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200 |
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277-20701-21 |
CRANKSHAFT CP |
1 |
Metric Taper |
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200 |
10 |
278-20901-31 |
CRANKSHAFT CP |
1 |
3/4” key, 5/16 tap - EX13 |
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200 |
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278-21001-31 |
CRANKSHAFT CP |
1 |
5/8” Pump - EX13 |
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200 |
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278-21201-31 |
CRANKSHAFT CP |
1 |
SAE Taper - EX13 |
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200 |
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278-20201-31 |
CRANKSHAFT CP |
1 |
Metric 20mm |
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200 |
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278-20301-21 |
CRANKSHAFT CP |
1 |
Metric Pump 20mm |
|
200 |
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278-20701-21 |
CRANKSHAFT CP |
1 |
Metric Taper |
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200 |
50 |
018-01400-20 |
FLANGE NUT |
1 |
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200 |
70 |
032-30300-10 |
WOODRUFF KEY |
1 |
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200 |
310 |
276-22501-10 |
CONNECTING ROD AY |
1 |
EX13 |
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200 |
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277-22501-10 |
CONNECTING ROD AY |
1 |
EX17 |
|
200 |
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278-22501-10 |
CONNECTING ROD AY |
1 |
EX21 |
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200 |
320 |
277-23001-03 |
CONNECTING ROD BOLT |
2 |
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200 |
350 |
276-23301-03 |
PISTON PIN |
1 |
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200 |
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277-23301-03 |
PISTON PIN |
1 |
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200 |
360 |
276-23401-03 |
PISTON |
1 |
STD, EX13 |
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200 |
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276-23403-03 |
PISTON |
1 |
Oversize 0.25mm, EX13 |
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200 |
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276-23404-03 |
PISTON |
1 |
Oversize 0.50mm, EX13 |
|
200 |
360 |
277-23401-03 |
PISTON |
1 |
Std, EX17,EX21 |
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200 |
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277-23403-03 |
PISTON |
1 |
Oversize 0.25mm, EX17,21 |
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200 |
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277-23404-03 |
PISTON |
1 |
Oversize 0.50mm, EX17,21 |
|
200 |
370 |
276-23511-17 |
PISTON RING SET |
1 |
STD, EX13 |
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200 |
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276-23512-17 |
PISTON RING SET |
1 |
Oversize 0.25mm, EX13 |
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200 |
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276-23513-17 |
PISTON RING SET |
1 |
Oversize 0.50mm, EX13 |
|
200 |
|
276-23501-17 |
PISTON RING SET |
1 |
STD, EX13 - 5pc |
|
200 |
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276-23502-17 |
PISTON RING SET |
1 |
Oversize 0.25mm, EX13 - 5pc |
|
200 |
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276-23503-17 |
PISTON RING SET |
1 |
Oversize 0.50mm, EX13 - 5pc |
|
200 |
370 |
277-23511-17 |
PISTON RING SET |
1 |
STD, EX11,21 |
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200 |
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277-23512-17 |
PISTON RING SET |
1 |
Oversize 0.25mm, EX117,21 |
|
200 |
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277-23513-17 |
PISTON RING SET |
1 |
Oversize 0.50mm, EX17,21 |
|
200 |
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277-23501-17 |
PISTON RING SET |
1 |
STD, EX17,21 - 5pc |
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200 |
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277-23502-17 |
PISTON RING SET |
1 |
Oversize 0.25mm, EX17,21 - 5pc |
|
200 |
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277-23503-17 |
PISTON RING SET |
1 |
Oversize 0.50mm, EX17,21 - 5pc |
|
200 |
380 |
215-25004-03 |
CLIP |
2 |
EX13 |
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200 |
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056-51600-10 |
CLIP |
2 |
EX17,21 |
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200 |
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EX13, EX17, EX21 |
- 9 - |
07-05 |
SECTION 3 INTAKE and EXHAUST GROUP - New Style
FIG. 300
EX13, EX17, EX21 |
- 10 - |
07-05 |
SECTION 3 |
INTAKE and EXHAUST GROUP - New Style |
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REF. |
PART NO. |
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DESCRIPTION |
QTY. |
REMARKS |
FROM-TO |
FIG. |
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10 |
277-31601-11 |
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CAMSHAFT |
1 |
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2100000~ |
300 |
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25 |
277-35101-03 |
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PIN, camshaft |
1 |
|
2100000~ |
300 |
|
7 |
024-00600-10 |
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O RING |
1 |
|
2100000~ |
300 |
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34 |
277-38601-03 |
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PIN, spring |
1 |
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2100000~ |
300 |
|
35 |
277-36401-03 |
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RELEASE LEVER |
1 |
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2100000~ |
300 |
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37 |
277-36501-03 |
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CLIP |
1 |
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2100000~ |
300 |
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38 |
277-38702-03 |
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RETURN SPRING |
1 |
|
2100000~ |
300 |
|
60 |
279-33601-03 |
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VALVE SPRING |
2 |
|
2100000~ |
300 |
|
70 |
269-33701-03 |
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RETAINER VALVE SPRING |
2 |
|
2100000~ |
300 |
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80 |
276-33401-33 |
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INTAKE VALVE |
1 |
EX13 |
2100000~ |
300 |
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277-33401-13 |
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INTAKE VALVE |
1 |
EX17,21 |
2100000~ |
300 |
|
90 |
276-33501-33 |
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EXHAUST VALVE |
1 |
EX13 |
2100000~ |
300 |
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277-33501-13 |
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EXHAUST VALVE |
1 |
EX17,21 |
2100000~ |
300 |
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95 |
132-10KA0-31 |
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COLLET VALVE |
4 |
|
2100000~ |
300 |
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150 |
276-35601-11 |
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TIMING CHAIN |
1 |
EX13 |
2100000~ |
300 |
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277-35601-11 |
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TIMING CHAIN |
1 |
EX17 |
2100000~ |
300 |
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278-35601-11 |
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TIMING CHAIN |
1 |
EX21 |
2100000~ |
300 |
|
160 |
277-36911-03 |
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TENTIONER |
1 |
|
2100000~ |
300 |
|
163 |
277-37101-03 |
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SPRING, tentioner |
1 |
|
2100000~ |
300 |
|
166 |
277-36902-03 |
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PIN, tentioner |
1 |
|
2100000~ |
300 |
|
170 |
277-36913-13 |
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CHAIN GUIDE |
1 |
|
2100000~ |
300 |
|
200 |
277-35002-01 |
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PIN, rocker |
1 |
|
2100000~ |
300 |
|
210 |
003-13050-00 |
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CLIP |
1 |
|
2100000~ |
300 |
|
220 |
277-36201-00 |
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ROCKER ARM AY, intake |
1 |
|
2100000~ |
300 |
|
225 |
277-36202-00 |
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ROCKER ARM AY, exhaust |
1 |
|
2100000~ |
300 |
|
230 |
014-90500-20 |
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ADJUST SCREW |
2 |
|
2100000~ |
300 |
|
240 |
017-00500-30 |
|
NUT |
2 |
|
2100000~ |
300 |
|
290 |
011-00600-20 |
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FLANGE BOLT |
1 |
|
2100000~ |
300 |
|
310 |
276-30101-11 |
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MUFFLER CP |
1 |
EX13 |
2100000~ |
300 |
|
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277-30101-11 |
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MUFFLER CP |
1 |
EX17 |
2100000~ |
300 |
|
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278-30101-11 |
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MUFFLER CP |
1 |
EX21 |
2100000~ |
300 |
|
310 |
276-30111-01 |
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MUFFLER CP |
1 |
EX13 w/spark arrestor |
2100000~ |
300 |
|
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277-30111-01 |
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MUFFLER CP |
1 |
EX17,21 w/spark arrestor |
2100000~ |
300 |
|
315 |
277-37601-01 |
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SPARK ARRESTOR |
1 |
|
2100000~ |
300 |
|
317 |
015-00400-60 |
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TAPPING SCREW |
1 |
|
2100000~ |
300 |
|
320 |
277-34201-11 |
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MUFFLER COVER |
1 |
|
2100000~ |
300 |
|
340 |
277-35201-13 |
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GASKET, muffler |
1 |
|
2100000~ |
300 |
|
350 |
980-20082-80 |
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FLANGE NUT |
2 |
|
2100000~ |
300 |
|
360 |
015-20600-90 |
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TAPPING BOLT |
2 |
|
2100000~ |
300 |
|
361 |
011-00600-10 |
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FLANGE BOLT |
1 |
|
2100000~ |
300 |
|
365 |
011-00801-50 |
|
FLANGE BOLT |
1 |
|
2100000~ |
300 |
|
385 |
277-37203-01 |
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SCREEN CP |
1 |
|
2100000~ |
300 |
|
387 |
018-00400-60 |
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TAPPING SCREW |
2 |
|
2100000~ |
300 |
|
440 |
277-37001-01 |
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DEFLECTOR |
1 |
|
2100000~ |
300 |
|
445 |
015-00400-60 |
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TAPPING SCREW |
2 |
|
2100000~ |
300 |
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EX13, EX17, EX21 |
- 11 - |
07-05 |
SECTION 3 INTAKE and EXHAUST GROUP - Old Style
FIG
EX13, EX17, EX21 |
- 12 - |
07-05 |
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