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.
PRODUCT NUMBER LABEL
PRODUCT NUMBER LABEL LOCATIONS
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 H 2 5 2
SPEC NO. (11 digits)CODE NO. (4 digits)
PRODUCT NO. (15 digits)
EH25-2- 3 -'99 - 7
X X X X
MANUAL LAYOUT
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1. SECTION NAMEParts 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. SUBASSEMBLYSUBASSEMBLY 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 NUMBERIt is the number assigned for sales unit. Use the PART No. when making an order.
6. DESCRIPTIONIt is designation of the part.
2101-
-2100
⑧⑧
⑧
⑧⑧
7. QTY.Quantity of each part used for each product.
8. REMARKSThis 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-TOThis 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.
- 2100The part is used in the products with CODE No. of 2100 and before this number.
EH25-2- 4 -'99 - 7
○○○○
○○○○
○○○○
GROUP INDEX
Group NamePage
CRANKCASE GROUP ............................................................................... 6
CRANKSHAFT GROUP ............................................................................. 8
INTAKE and EXHAUST GROUP.............................................................. 10
GOVERNOR GROUP ............................................................................... 12
COOLING and STARTING GROUP......................................................... 14
FUEL GROUP ........................................................................................... 16
FUEL GROUP - CARBURETOR.............................................................. 18
ELECTRIC DEVICE GROUP - RECOIL START...................................... 20
ELECTRIC DEVICE GROUP - ELECTRIC START ................................. 2 2
ELECTRIC DEVICE GROUP - ELECTRIC STARTER ............................ 2 4
ELECTRIC DEVICE GROUP - OIL SENSOR.......................................... 26
510270-32601-00AIR CLEANER AY1FOAM AIR CLEANER type300
-2234-36003-08PACKING1FOAM AIR CLEANER type300
-13270-32650-08PLATE1FOAM AIR CLEANER type300
-520270-32610-08CLEANER ELEMENT1FOAM AIR CLEANER type300
520234-32604-07ELEMENT SET1CYCLONE type300
540234-32901-03INSULATOR1300
555246-36001-13GASKET, INTAKE PIPE1300
556001-13082-80BOLT AND WASHER AY3300
560234-35902-03GASKET 2, INSULATOR2300
570226-39212-00NUT AND WASHER AY2CYCLONE, top inlet type300
002-38060-00FLANGE NUT2FOAM AIR CLEANER type300
580001-10061-20BOLT AND WASHER AY2CYCLONE, top inlet type300
650230-43901-01CHOKE KNOB1CYCLONE, top inlet type300
EH25-2- 11 -'99 - 7
SECTION 4GOVERNOR GROUP
FIG. 400
MANUAL ONLY THROTTLE
MANUAL THROTTLE CONTROL with REMOTE CABLE OPTION
EH25-2- 12 -'99 - 7
SECTION 4GOVERNOR GROUP
REF.PART NO.DESCRIPTIONQT Y. REMARKSFROM-TOFIG.
10254-42301-23GOVERNOR LEVER1400
20246-42201-23GOVERNOR SHAFT1400
30254-42701-01GOVERNOR ROD CP1400
40254-42801-03ROD SPRING1400
50003-13060-00CLIP2400
60001-14063-00BOLT AND WASHER AY1400
70018-60600-20NUT1400
80254-42501-13GOVERNOR SPRING1400
310270-43302-00SPEED CONTROL AY1manual w/remote cable option400
270-43301-00SPEED CONTROL AYmanual only control400
320270-43302-01SPEED CONTROL CP1manual w/remote cable option400
270-43301-01SPEED CONTROL1manual only control400
330227-43601-03KNOB1400
340270-43501-03STOP PLATE1400
345004-31042-50SCREW1400
346269-45503-03IDLE SET SPRING1400
350227-45002-03SPRING WASHER1400
360004-31063-00SCREW1400
370002-27060-00NUT1400
380011-00600-50FLANGE-BOLT1manual w/remote cable option400
011-00600-30FLANGE BOL T1manual only control400
410254-44201-23WIRE BRACKET1manual w/remote cable option400
440004-31040-80SCREW1manual w/remote cable option400
450002-27060-00NUT1manual w/remote cable option400
EH25-2- 13 -'99 - 7
SECTION 5COOLING and STARTING GROUP
FIG. 500
EH25-2- 14 -'99 - 7
SECTION 5COOLING and STARTING GROUP
REF.PART NO.DESCRIPTIONQT Y. REMARKSFROM-TOFIG.
10254-53450-01BLOWER HOUSING CP1BLACK500
254-53550-11BLOWER HOUSING CP1BLACK, electric start type500
10254-61050-11FUEL TANK CP1BLACK600
20073-20039-00LABEL, CAUTION1600
30043-04300-15FUEL TANK CAP CP1600
40064-13600-10FUEL FILTER CP1600
50064-20086-00FUEL STRAINER AY1600
-1064-20041-10FILTER1600
-2064-20014-30RUBBER PACKING1600
-3064-20014-10CUP1600
-4064-20023-60LOCK NUT1600
-8064-20027-90LOCK BOLT1600
-15064-20032-30SPRING1600
70234-62601-01FUEL PIPE CP1600
80085-10600-00RUBBER PIPE16 x 12 x 75600
90056-11100-20HOSE CLAMP2600
105001-13082-00BOLT AND WASHER AY4600
EH25-2- 17 -'99 - 7
SECTION 6FUEL GROUP - CARBURETOR
FIG. 610
EH25-2- 18 -'99 - 7
SECTION 6FUEL GROUP - CARBURETOR
REF.PART NO.DESCRIPTIONQT Y. REMARKSFROM-TOFIG.
210254-62523-00CARBURETOR AY1CYCLONE, top inlet type610
254-62560-10CARBURETOR AY1FOAM AIR CLEANER type610
-1239-62535-08THROTTLE VALVE1610
-2209-62351-08SCREW2610
-3254-62525-08VALVE, CHOKE1610
-4237-62451-08SCREW PANHEAD2610
-5254-62420-08PILOT JET1610
-6246-62436-08ADJUSTER1610
-7230-62448-08SPRING1610
-8234-62521-08CHOKE LEVER AY1CYCLONE, top inlet type610
234-62520-08CHOKE LEVER AY1FOAM AIR CLEANER type610
-9239-62560-08RING1CYCLONE, top inlet type610
234-62550-08RING1FOAM AIR CLEANER type610
-11254-62531-08SHAFT AY, THROTTLE1CYCLONE, top inlet type610
254-62530-08SHAFT AY, THROTTLE1FOAM AIR CLEANER type610
-12224-62544-08BOLT1610
-13226-62550-08RING1610
-14224-62312-08NEEDLE VALVE AY1610
-15214-62515-08FLOAT PIN1610
-16224-62552-08FLOAT CHAMBER BODY1610
-17207-62345-08INSERT WASHER1610
-18206-62540-08PACKING, CHAMBER1610
-19234-62506-08FLOAT AY1610
-20254-62440-08MAIN NOZZLE1610
-22254-62403-08MAIN JET1CYCLONE, top inlet type610
254-62402-08MAIN JET1FOAM AIR CLEANER type610
-23246-62455-08BOLT1CYCLONE, top inlet type610
-24224-62569-18CLIP1CYCLONE, top inlet type610
226-62701-18CLIP1FOAM AIR CLEANER type610
-32106-62392-08SEAL1CYCLONE, top inlet type610
-40246-62435-08ADJUST SCREW1610
-41230-62446-08SPRING1610
-61247-62550-08CAP1CYCLONE, top inlet type610
-62236-62680-08SEAL1CYCLONE, top inlet type610
-89246-62425-08GUIDE HOLDER1610
-101156-62351-08PACKING1CYCLONE, top inlet type610