YAMAHA MK300K2U, MK300K3U, MK360K2U, MK360K3U, MK300Br2BQ/6 PARTS CATALOGUE 7WE

YAMAHA MULTI−PURPOSE ENGINE

MK300Br2BQ/6
MK300K2U
MK300K3U
MK360K2U
MK360K3U

(7WE4)

(7WE3)

(7WF3)

(7WG3)

(7WH3)

KOHLER

KOHLER

KOHLER

KOHLER

KOHLER

1A7WE−110E1

MK300Br2BQ/6/MK300K2U/MK300K3U/

MK360K2U/MK360K3U

PARTS CATALOGUE

E2002 by Yamaha Motor Co., Ltd.

1st Edition, Aug. 2002

All rights reserved.

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Co., Ltd.

is expressly prohibited.

Printed in Japan

FOREWORD

This Parts Catalogue is related to the parts for the model(s) in the below frame. When you are
ordering replacement parts, please refer to this Parts Catalogue and quote both part numbers
and part names correctly.

1. Modifications or additions which have been made after issue of the Parts Catalogue
will be announced in the Yamaha Parts News.
It is advisable that you make necessary corrections to the Parts Catalogue according
to the Yamaha Parts News.

2. Abbreviations
The following abbreviations are used in this Parts Catalogue.

“UR” Use specified parts number.

“UN” Use as many as needed.

“AP” Alternate Parts

“LM” Local Made (Parts need to be ordered locally)

“F#” Frame No. (Applicable machine No.)

3. Parts, which are to be supplied in an assembly, are listed with a dot(.) in front of the
part name as shown below.

EXAMPLE

CARBURETOR ASSY

.JET, PILOT

.NOZZLE, MAIN

5. Applicable colors of graphics are represented in the REMARKS as shown below.

PART NO. DESCRIPTION Q’TY REMARKS

7UH−24110−00−98 FUEL TANK COMP. 1 LGB
7T9−24610−00 CAP ASSY 1

6. Applicable Serial No. and Color Code

See the Serial No list on next page.

Engine Serial No.

Color
Code

0098 LOW GLOSS BLACK LGB

7. Note that the illustraitions for reference in finding parts numbers, not be used for as­sembling. When assembling, please use the applicable service manual.

Color Name

Abbrevi-

ation

4. Number of component for assembly
The numeral appearing to the right of each component part indicates the quantity of
parts for each assembly unit.

EXAMPLE

PART NO. DESCRIPTION Q’TY REMARKS

2F5−83310−60 FRONT FLASHER LIGHT ASSY 2

115−83311−60 .BULB (6V−18W) 1

Engine Serial No.

This parts catalogue is related to the par ts for the models in the lis t below.

MODEL CODE MODEL NAME SPECIFICATION (OUT LINE) ENGINE SERIAL NO KOHLER SPEC NO

7WE4 MK300Br2BQ/6 1:6 Reduction 7WE−0420101 931616

7WE3 MK300K2U F/T LESS, A/C MZ TYPE 7WE−0370101 931615

7WF3 MK300K3U F/T LESS, A/C MZ TYPE 7WF−0320101 931614

7WG3 MK360K2U F/T LESS, A/C MZ TYPE 7WG−0380101 941623

7WH3 MK360K3U F/T LESS, A/C MZ TYPE 7WH−0330101 941624

CYLINDER 1.........................................

CRANKSHAFT 2......................................

CRANKSHAFT. PISTON 3..............................

CRANKSHAFT. PISTON 2 4............................

GOVERNOR 1 5......................................

GOVERNOR 2 6......................................

CAMSHAFT. VALVE 7.................................

AIR SHROUD. STARTER 8.............................

INTAKE 1 9...........................................

INTAKE 2 10...........................................

CARBURETOR 1 11....................................

CARBURETOR 2 12....................................

CARBURETOR 3 13....................................

EXHAUST 14..........................................

CRANKCASE COVER 1 15..............................

CRANKCASE COVER 2 16..............................

BRACKET 1 17........................................

FUEL TANK 18........................................

MAGNETO 19.........................................

MAGNETO 2 (EL. START MODEL) 20.....................

STARTING MOTOR 21..................................

ELECTRICAL 1 22.....................................

ELECTRICAL 2 (EL. START MODEL) 23..................

EMBLEM. LABEL 24....................................

BODY FITTING 25.....................................

CONTENTS

INDEX

NUMERICAL INDEX 26.................................

FIG. 1 CYLINDER

REF.
NO.

10 95827−06035 BOLT, FLANGE 2

11 7RH−11166−00 PIPE, BREATHER 1 1 1 1 1 1

12 95607−08720 BOLT, STUD 2

PART NO. DESCRIPTION REMARKS

1 7WE−11111−00 HEAD, CYLINDER 1 1 1 1

7WG−11111−00 HEAD, CYLINDER 1 1 1

2 7WE−11181−00 GASKET, CYLINDER HEAD 1 1 1 1

7WG−11181−00 GASKET, CYLINDER HEAD 1 1 1

3 95817−10070 BOLT, FLANGE 4 4 4 4 4

4 99530−14016 PIN, DOWEL 2 2 2 2 2

5 95627−08618 BOLT, STUD 2 2 2 2 2

6 94702−00331 PLUG, SPARK (NGK BPR4ES) 1 1 1 1 1

7 7WG−11190−00 COVER, CYLINDER HEAD 1 1 1 1 1 1

8 JN6−11193−00 GASKET, HEAD COVER 1 1 1 1 1 1

9 95827−06030 BOLT, FLANGE 2 2 2 2 2

95827−06030 BOLT, FLANGE 2 2 2 2

7WE4

7WE3

7WF3

7WG3

7WH3

95607−08700 BOLT, STUD 2 2 2 2

1

FIG. 2 CRANKSHAFT

REF.
NO.

PART NO. DESCRIPTION REMARKS

1 7WG−11400−10 CRANKSHAFT ASSY 1

7WG−11400−40 CRANKSHAFT ASSY 1 1 1 1

7WE4

7WE3

7WF3

7WG3

7WH3

2

FIG. 3 CRANKSHAFT. PISTON

REF.
NO.

10 95817−08025 BOLT, FLANGE 1

11 7UR−11406−00 SHAFT ASSY 1

PART NO. DESCRIPTION REMARKS

1 JN6−11631−00−A0 PISTON (STD) 1

JN6−11635−00 PISTON (0.25MM O/S) 1 AP

JN6−11636−00 PISTON (0.50MM O/S) 1 AP

2 JN6−11610−00 PISTON RING SET (STD) 1

JN6−11610−10 PISTON RING SET (0.25MM O/S) 1 AP

JN6−11610−20 PISTON RING SET (0.50MM O/S) 1 AP

3 447−11633−00 PIN, PISTON 1

4 93450−21053 CIRCLIP 2

5 JN6−11650−00 CONNECTING ROD ASSY 1

6 JN6−11654−00 .BOLT, CONNECTING ROD 2

7 7WG−11454−00 WEIGHT 1 1

8 7UR−11434−00 GEAR, CRANK SHAFT 1

9 7UR−11557−00 WASHER 1 1

7WE4

7WE3

7WF3

7WG3

7WH3

12 7UR−11465−10 SHAFT 2 1

13 90282−06037 KEY, STRAIGHT (6.3 MM) 1

3

FIG. 4 CRANKSHAFT. PISTON 2

REF.
NO.

PART NO. DESCRIPTION REMARKS

1 JN6−11631−00−A0 PISTON (STD) 1 1

7RH−11631−00−A0 PISTON (STD) 1 1

JN6−11635−00 PISTON (0.25MM O/S) 1 1 AP

7RH−11635−00 PISTON (0.25MM O/S) 1 1 AP

JN6−11636−00 PISTON (0.50MM O/S) 1 1 AP

7RH−11636−00 PISTON (0.50MM O/S) 1 1 AP

2 JN6−11610−00 PISTON RING SET (STD) 1 1

7RH−11603−00 PISTON RING SET (STD) 1 1

JN6−11610−10 PISTON RING SET (0.25MM O/S) 1 1 AP

7RH−11604−00 PISTON RING SET (0.25MM O/S) 1 1 AP

JN6−11610−20 PISTON RING SET (0.50MM O/S) 1 1 AP

7RH−11605−00 PISTON RING SET (0.50MM O/S) 1 1 AP

3 447−11633−00 PIN, PISTON 1 1

583−11633−00 PIN, PISTON 1 1

4 93450−21053 CIRCLIP 2 2 2 2

7WE4

7WE3

7WF3

7WG3

7WH3

5 JN6−11650−00 CONNECTING ROD ASSY 1 1 1 1

6 JN6−11654−00 .BOLT, CONNECTING ROD 2 2 2 2

7 7WG−11454−00 WEIGHT 1 1 1 1 1

8 7RK−11561−00 SHIM, CRANK 1(0.1T) 1 1 1 1 UN

4