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:
D Y 4 2 0
SPEC NO. (11 digits)CODE NO. (4 digits)
PRODUCT NO. (15 digits)
- 3 -'00-07
X X X X
MANUAL LAYOUT
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.
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.
- 4 -'00-07
GROUP INDEX
Group NamePage
CRANKCASE GROUP ............................................................................... 6
CRANKSHAFT GROUP ............................................................................ 12
INT AKE and EXHAUST GROUP ............................................................... 16
GOVERNOR GROUP ............................................................................... 22
COOLING and STARTING GROUP ......................................................... 24
FUEL, LUBRICANT GROUP ..................................................................... 26
ELECTRIC DEVICE GROUP .................................................................... 34
INDEX OF DESCRIPTION SYMBOLS
SYMBOLDESCRIPTION
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
SYMBOLDESCRIPTION
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
- 5 -'00-07
SECTION 1CRANKCASE GROUP
FIG. 100
188
186
187
DY30/DY35 & DY41/DY42- 6 -'00-07
SECTION
228-101
228-101
229-101
229-101
231-10108-1
/
231-101
/50005-26081-80
4
51
228-15003-13
65
001-32083-51
3
010-50800-44
2
228-16001-1
TENSION
T
/
231-16001-1
TENSION
T
T
228-16002-21
TENSION
TT 22
/
231-16002-1
TT 22
228-15802-03
0.25mm
228-15803-03
0.50mm
228-15002-03
005-19250-60
2
228-25002-03
SLEEVE,
228-26001-01
228-25004-03
980-05060-10
T
andWASHER
AY
208
212-15008-13
210
228-1
/
231-1
/
220
044-02200-50
230
060-03500-40
267
001-32064-50
2
290
228-15007-03
/
231-15033-03
/
300
001-13088-50
AY
4
310
001-13086-50
AY
4
350
228-1
/
228-1
/
350
231-1
/
231-1
/
351
044-04000-20
352
001-13082-00
T
andWASHER
AY
355
228-15004-03
T=
one
only
228-15005-03
T=
0.2
one
only
228-15006-03
T=
one
only
- 7 -
SECTION 1CRANKCASE GROUP
FIG. 100
188
186
187
DY30/DY35 & DY41/DY42- 8 -'00-07
SECTION 1CRANKCASE GROUP
REF.PART NO.DESCRIPTIONQTY. REMARKSFROM-TOFIG.
355231-15004-03GASKET, T= 0.11Select one piece only, DY41/42100
231-15005-03GASKET, T= 0.21Select one piece only, DY41/42100
231-15006-03GASKET, T= 0.31Select one piece only, DY41/42100