Robin EX13, EX17, EX21 PARTS LIST

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

EX13, EX17, EX21 - 2 - 07-05

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 dif ference 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)

EX13, EX17, EX21 - 3 - 07-05

X X X X

MANUAL LAYOUT

5 4

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.

EX13, EX17, EX21 - 4 - 07-05

GROUP INDEX

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

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 ...........................VOLT AGE

~W ..........................WA TT

W/ ...........................WITH

W/O ........................WITHOUT

EX13, EX17, EX21 - 5 - 07-05

SECTION 1 CRANKCASE GROUP

FIG. 100

EX13, EX17, EX21 - 6 - 07-05

SECTION 1 CRANKCASE GROUP

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

10 276-10102-41 CRANKCASE CP 1 EX13, w/ oil sensor 100

276-10101-41 CRANKCASE CP 1 EX13, w/o oil sensor 100

10 277-10102-41 CRANKCASE CP 1 EX17, w/ oil sensor 100

277-10101-41 CRANKCASE CP 1 EX17, w/o oil sensor 100

10 278-10102-41 CRANKCASE CP 1 EX21, w/ oil sensor 100

278-10101-41 CRANKCASE CP 1 EX21, w/o oil sensor 100

20 237-14202-03 VALVE GUIDE 2 100 26 277-16010-01 STEM SEAL 1 100 30 044-02502-00 OIL SEAL 1 40 060-02800-21 BALL BEARING 1 100 50 277-15011-03 PIPE KNOCK 2 100 60 010-50802-50 STUD 2 100 70 010-50603-51 STUD 2 100 75 044-00600-20 OIL SEAL 1 100 80 040-11400-30 PLUG 2 100 90 021-11400-20 GASKET 2 100 210 277-11002-21 MAIN BEARING COVER CP 1 SAE 100

277-11001-31 MAIN BEARING COVER CP 1 Metric 100

220 044-02502-10 OIL SEAL 1 100 230 060-02501-40 BALL BEARING 1 100 250 277-45004-H1 GOVERNOR GEAR CP 1 100 260 277-41901-03 GOVERNOR SLEEVE 1 100 270 277-63601-13 OIL GAUGE 1 100 275 277-65001-03 FILLER PLUG 1 100 280 021-31600-20 GASKET 1 100 281 021-31600-20 GASKET 1 100 300 001-04083-50 FLANGE BOLT 6 100 610 276-13001-01 CYLINDER HEAD CP 1 EX13, Old Style ~2099999 100

276-13001-11 CYLINDER HEAD CP 1 EX13, New Style 2100000~ 100

610 277-13001-01 CYLINDER HEAD CP 1 EX17, Old Style ~2099999 100

277-13001-11 CYLINDER HEAD CP 1 EX17, New Style 2100000~ 100

610 278-13001-01 CYLINDER HEAD CP 1 EX21, Old Style ~2099999 100

278-13001-11 CYLINDER HEAD CP 1 EX21, New Style 2100000~ 100

620 276-15001-13 GASKET, head 1 EX13 100

277-15001-23 GASKET, head 1 EX17 and EX21 100

630 011-00802-40 FLANGE BOLT 4 100 631 001-04083-50 FLANGE BOLT 1 100 680 277-15501-01 ROCKER COVER CP 1 100 690 277-16001-03 GASKET, rocker cover 1 100 700 277-15011-03 PIPE KNOCK 2 100 710 011-00600-20 FLANGE BOLT 4 100 960 276-99001-07 GASKET SET 1 EX13 100

277-99001-07 GASKET SET 1 EX17 and EX21 100 EX0-20000-01 GASKET IN A TUBE

100

EX13, EX17, EX21 - 7 - 07-05

SECTION 2 CRANKSHAFT GROUP

FIG. 200

EX13, EX17, EX21 - 8 - 07-05

SECTION 2 CRANKSHAFT GROUP

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

10 276-20901-31 CRANKSHAFT CP 1 3/4” key, 5/16 tap - EX13 200

276-21001-21 CRANKSHAFT CP 1 5/8” Pump - EX13 200 276-21201-21 CRANKSHAFT CP 1 SAE Taper - EX13 200 276-20201-31 CRANKSHAFT CP 1 Metric 18mm 200 276-20301-21 CRANKSHAFT CP 1 Metric Pump 18mm 200 276-20701-21 CRANKSHAFT CP 1 Metric Taper 200

10 277-20901-21 CRANKSHAFT CP 1 3/4” key, 5/16 tap - EX13 200

277-21001-21 CRANKSHAFT CP 1 5/8” Pump - EX13 200 277-21201-21 CRANKSHAFT CP 1 SAE Taper - EX13 200 277-20201-21 CRANKSHAFT CP 1 Metric 20mm 200 277-20301-21 CRANKSHAFT CP 1 Metric Pump 20mm 200 277-20701-21 CRANKSHAFT CP 1 Metric Taper 200

10 278-20901-31 CRANKSHAFT CP 1 3/4” key, 5/16 tap - EX13 200

278-21001-31 CRANKSHAFT CP 1 5/8” Pump - EX13 200 278-21201-31 CRANKSHAFT CP 1 SAE Taper - EX13 200 278-20201-31 CRANKSHAFT CP 1 Metric 20mm 200 278-20301-21 CRANKSHAFT CP 1 Metric Pump 20mm 200 278-20701-21 CRANKSHAFT CP 1 Metric Taper 200

50 018-01400-20 FLANGE NUT 1 200 70 032-30300-10 WOODRUFF KEY 1 200 310 276-22501-10 CONNECTING ROD AY 1 EX13 200

277-22501-10 CONNECTING ROD AY 1 EX17 200 278-22501-10 CONNECTING ROD AY 1 EX21 200

320 277-23001-03 CONNECTING ROD BOLT 2 200 350 276-23301-03 PISTON PIN 1 200

277-23301-03 PISTON PIN 1 200

360 276-23401-03 PISTON 1 STD, EX13 200

276-23403-03 PISTON 1 Oversize 0.25mm, EX13 200 276-23404-03 PISTON 1 Oversize 0.50mm, EX13 200

360 277-23401-03 PISTON 1 Std, EX17,EX21 200

277-23403-03 PISTON 1 Oversize 0.25mm, EX17,21 200 277-23404-03 PISTON 1 Oversize 0.50mm, EX17,21 200

370 276-23511-17 PISTON RING SET 1 STD, EX13 200

276-23512-17 PISTON RING SET 1 Oversize 0.25mm, EX13 200 276-23513-17 PISTON RING SET 1 Oversize 0.50mm, EX13 200 276-23501-17 PISTON RING SET 1 STD, EX13 - 5pc 200 276-23502-17 PISTON RING SET 1 Oversize 0.25mm, EX13 - 5pc 200 276-23503-17 PISTON RING SET 1 Oversize 0.50mm, EX13 - 5pc 200

370 277-23511-17 PISTON RING SET 1 STD, EX11,21 200

277-23512-17 PISTON RING SET 1 Oversize 0.25mm, EX117,21 200 277-23513-17 PISTON RING SET 1 Oversize 0.50mm, EX17,21 200 277-23501-17 PISTON RING SET 1 STD, EX17,21 - 5pc 200 277-23502-17 PISTON RING SET 1 Oversize 0.25mm, EX17,21 - 5pc 200 277-23503-17 PISTON RING SET 1 Oversize 0.50mm, EX17,21 - 5pc 200

380 215-25004-03 CLIP 2 EX13 200

056-51600-10 CLIP 2 EX17,21 200

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

REF. PART NO. DESCRIPTION QTY. REMARKS FROM-TO FIG.

10 277-31601-11 CAMSHAFT 1 2100000~ 300 25 277-35101-03 PIN, camshaft 1 7 024-00600-10 O RING 1 2100000~ 300 34 277-38601-03 PIN, spring 1 35 277-36401-03 RELEASE LEVER 1 37 277-36501-03 CLIP 1 2100000~ 300 38 277-38702-03 RETURN SPRING 1 2100000~ 300 60 279-33601-03 VALVE SPRING 2 2100000~ 300 70 269-33701-03 RETAINER VALVE SPRING 2 2100000~ 300 80 276-33401-33 INTAKE VALVE 1 EX13 2100000~ 300

277-33401-13 INTAKE VALVE 1 EX17,21 2100000~ 300

90 276-33501-33 EXHAUST VALVE 1 EX13 2100000~ 300

277-33501-13 EXHAUST VALVE 1 EX17,21 2100000~ 300

95 132-10KA0-31 COLLET VALVE 4 2100000~ 300 150 276-35601-11 TIMING CHAIN 1 EX13 2100000~ 300

277-35601-11 TIMING CHAIN 1 EX17 2100000~ 300 278-35601-11 TIMING CHAIN 1 EX21 2100000~ 300

160 277-36911-03 TENTIONER 1 2100000~ 300 163 277-37101-03 SPRING, tentioner 1 2100000~ 300 166 277-36902-03 PIN, tentioner 1 2100000~ 300 170 277-36913-13 CHAIN GUIDE 1 2100000~ 300 200 277-35002-01 PIN, rocker 1 2100000~ 300 210 003-13050-00 CLIP 1 2100000~ 300 220 277-36201-00 ROCKER ARM A Y, intake 1 2100000~ 300 225 277-36202-00 ROCKER ARM A Y, exhaust 1 2100000~ 300 230 014-90500-20 ADJUST SCREW 2 2100000~ 300 240 017-00500-30 NUT 2 2100000~ 300 290 011-00600-20 FLANGE BOLT 1 2100000~ 300 310 276-30101-11 MUFFLER CP 1 EX13 2100000~ 300

277-30101-11 MUFFLER CP 1 EX17 2100000~ 300 278-30101-11 MUFFLER CP 1 EX21 2100000~ 300

310 276-30111-01 MUFFLER CP 1 EX13 w/spark arrestor 2100000~ 300

277-30111-01 MUFFLER CP 1 EX17,21 w/spark arrestor 2100000~ 300

315 277-37601-01 SPARK ARRESTOR 1 2100000~ 300 317 015-00400-60 TAPPING SCREW 1 2100000~ 300 320 277-34201-11 MUFFLER COVER 1 2100000~ 300 340 277-35201-13 GASKET, mufﬂ er 1 2100000~ 300 350 980-20082-80 FLANGE NUT 2 2100000~ 300 360 015-20600-90 TAPPING BOLT 2 2100000~ 300 361 011-00600-10 FLANGE BOLT 1 2100000~ 300 365 011-00801-50 FLANGE BOLT 1 2100000~ 300 385 277-37203-01 SCREEN CP 1 2100000~ 300 387 018-00400-60 TAPPING SCREW 2 2100000~ 300 440 277-37001-01 DEFLECTOR 1 2100000~ 300 445 015-00400-60 TAPPING SCREW 2 2100000~ 300

2100000~ 300 2100000~ 300

2100000~ 300

EX13, EX17, EX21 - 11 - 07-05

SECTION 3 INTAKE and EXHAUST GROUP - Old Style

FIG. 300

EX13, EX17, EX21 - 12 - 07-05

+ 28 hidden pages