Subaru DY23-2, DY27-2 user guide

PARTS
MANUAL

Models

DY23-2 / DY27-2
ENGINE

PUB-EP5754A
Rev. 07/00

940 Lively Blvd.  Wood Dale, IL 60191  Phone: [phone]  Fax: [phone]

e-mail: [e-mail] • www.robinamerica.com

© Copyright 2000 Robin America, Inc.

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.

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 2 3 2

SPEC NO. (11 digits) CODE NO. (4 digits)

PRODUCT NO. (15 digits)

- 3 - '00-07

X X X X

MANUAL LAYOUT

1. SECTION NAME Parts 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. 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 specification,

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.

- 4 - '00-07

GROUP INDEX

Group Name Page

CRANKCASE GROUP ............................................................................... 6

CRANKSHAFT GROUP ............................................................................ 10

INT AKE and EXHAUST GROUP ............................................................... 12

GOVERNOR GROUP ............................................................................... 16

COOLING and STARTING GROUP ......................................................... 18

FUEL, LUBRICANT GROUP ..................................................................... 20

ELECTRIC DEVICE GROUP .................................................................... 24

ACCESSORIES GROUP .......................................................................... 28

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 .......................... VOLTAGE

~W ......................... WATT

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

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

- 5 - '00-07

SECTION 1 CRANKCASE GROUP

FIG. 100

DY23-2 / DY27-2 - 6 - '00-07

SECTION 1 CRANKCASE GROUP

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

10 243-10101-61 CRANKCASE CP 1 DY23-2 100

243-10105-61 CRANKCASE CP 1 DY23-2, Electric Start 100

10 244-10101-61 CRANKCASE CP 1 DY27-2 100

244-10105-61 CRANKCASE CP 1 DY27-2, Electric Start 100
30 044-03000-60 OIL SEAL 1 100
36 044-00800-30 OIL SEAL 1 100
45 060-01700-40 BALL BEARING 1 100
50 005-26081-80 DOWEL PIN 2 100
65 001-37062-21 STUD 3 100
66 031-00500-10 DOWEL PIN 1 100
80 040-11400-30 PLUG 2 100
90 021-11400-20 GASKET 2 100

105 031-00600-10 DOWEL PIN 2 100
135 244-16002-1 1 TENSION BOL T CP 3 100
155 244-16002-1 1 TENSION BOL T CP 1 100
205 243-75001-03 GROMMET 1 Electric Start 100
210 244-11009-21 MAIN BEARING COVER CP 1 1 00
220 044-03000-30 OIL SEAL 1 100
250 243-45011-07 GOVERNOR GEAR SET 1 100
251 220-41601-03 FLYWEIGHT 2 100
252 030-73000-70 PIN 2 100
260 205-41901-03 GOVERNOR SLEEVE 1 100
270 214-63601-13 OIL GAUGE 2 100
280 021-32000-10 GASKET 2 100
290 243-15026-03 GASKET, main bearing cover 1 100
300 001-13083-50 BOLT and WASHER AY 12 100
310 001-13084-00 BOLT and WASHER AY 1 100
320 243-15801-03 MAIN BEARING 1 STD. 100

243-15802-03 MAIN BEARING 1 0.25mm undersize 100

243-15803-03 MAIN BEARING 1 0.50mm undersize 100

361 212-15008-13 BLIND PLUG 1 100

DY23-2 / DY27-2 - 7 - '00-07

SECTION 1 CRANKCASE GROUP

FIG. 110

DY23-2 / DY27-2 - 8 - '00-07

SECTION 1 CRANKCASE GROUP

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

20 243-14204-13 VALVE GUIDE 2 110
60 001-37082-01 STUD 2 110

610 243-13001-71 CYLINDER HEAD CP 1 110
620 243-15027-13 GASKET, T= 0.2 1 Select one piece only, DY23-2 110

243-15028-13 GASKET, T= 0.3 1 Select one piece only, DY23-2 110

620 244-15027-13 GASKET, T= 0.2 1 Select one piece only, DY27-2 110

244-15028-13 GASKET, T= 0.3 1 Select one piece only, DY27-2 110

635 018-00900-10 FLANGE NUT 4 110
650 001-39066-00 STUD 1 110
660 010-50601-50 STUD 1 110
680 243-17101-01 ROCKER COVER CP 1 110
690 243-1 5032-13 GASKET, rocker cover 1 110
710 011-00601-70 FLANGE BOLT 4 110

730 243-15030-03 PLUG 1 110
*960 255-99001-07 GASKET SET 1 DY23-2
*960 256-99001-07 GASKET SET 1 DY27-2

* The gasket set for the DY23-2 contains the following:
Fig. 100 items 90, 280, 290
Fig. 110 items 620, 690
Fig. 310 items 340, 555

* The gasket set for the DY27-2 contains the following:
Fig. 100 items 90, 280, 900
Fig. 110 items 620, 690
Fig. 310 items 340, 510-2, 555

DY23-2 / DY27-2 - 9 - '00-07