YAMAHA EF4600A, EF6600A PARTS CATALOGUE
YAMAHA GENERATOR
EF4600A
EF6600A
(7WX2) (120V/240V–60Hz) USA
(7WY2) (120V/240V–60Hz) USA
117WX–110E1
EF4600A/EF6600A
PARTS CATALOGUE
E2001 by Yamaha Motor Co., Ltd.
1st Edition, Sep. 2001
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 Starting Serial No. and Color Code
MODEL NAME
EF4600A 7WX2 7WX–200101
EF6600A 7WY2 7WY–200101
Engine Serial No.
Color
Code
00NJ FARAWAY BLUE FWB
6. Note that the illustrations for reference in finding parts numbers, not to be used for
assembling. When assembling, please use the applicable service manual.
MODEL TYPE FRAME NO.
Color Name
Abbrevi-
ation
MODEL
7WX2
7WY2
Country
(destination)
USA
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
7. The asterisk (*) before a reference number indicates modification items after the first
edition.
CYLINDER 1.........................................
CRANKSHAFT. PISTON 2.............................
GOVERNOR 1 3......................................
CAMSHAFT.VALVE 4..................................
AIR SHROUD. STARTER 5.............................
INTAKE 6............................................
CARBURETOR 7.....................................
EXHAUST 8..........................................
CRANKCASE 9.......................................
FRAME 10............................................
FUEL TANK 11........................................
MAGNETO 12.........................................
ELECTRICAL 13.......................................
GENERATOR 1 (EF4600A) 14...........................
GENERATOR 2 (EF6600A) 16...........................
CONTROL BOX 1 (EF4600A) 18.........................
CONTROL BOX 2 (EF6600A) 20.........................
LABELS 22............................................
INDEX
NUMERICAL INDEX 23.................................
CONTENTS
FIG. 1 CYLINDER
REF.
NO.
10 7RH–11166–00 PIPE, BREATHER 1 1 1
11 95607–08700 BOLT, STUD 2 2
PART NO. DESCRIPTION REMARKS
1 7WE–11111–00 HEAD, CYLINDER 1 1
7WG–11111–00 HEAD, CYLINDER 1 1
2 7WE–11181–00 GASKET, CYLINDER HEAD 1 1
7WG–11181–00 GASKET, CYLINDER HEAD 1 1
3 95817–10070 BOLT, FLANGE 4 4
4 99530–14016 PIN, DOWEL 2 2
5 95627–08618 BOLT, STUD 2 2
6 94702–00331 PLUG, SPARK (BPR4ES) 1 1
7 7WG–11190–00 COVER, CYLINDER HEAD 1 1 1
8 JN6–11193–00 GASKET, HEAD COVER 1 1 1
9 95827–06030 BOLT, FLANGE 4 4
7WX2
7WY2
1
FIG. 2 CRANKSHAFT. PISTON
REF.
NO.
PART NO. DESCRIPTION REMARKS
1 7WR–11400–00 CRANKSHAFT ASSY 1
7WR–11400–10 CRANKSHAFT ASSY 1
2 JN6–11631–00–A0 PISTON (STD) 1
7RH–11631–00–A0 PISTON (STD) 1
JN6–11635–00 PISTON (0.25MM O/S) 1 AP
7RH–11635–00 PISTON (0.25MM O/S) 1 AP
JN6–11636–00 PISTON (0.50MM O/S) 1 AP
7RH–11636–00 PISTON (0.50MM O/S) 1 AP
3 JN6–11610–00 PISTON RING SET (STD) 1
7RH–11603–00 PISTON RING SET (STD) 1
JN6–11610–10 PISTON RING SET (0.25MM O/S) 1 AP
7RH–11604–00 PISTON RING SET (0.25MM O/S) 1 AP
JN6–11610–20 PISTON RING SET (0.50MM O/S) 1 AP
7RH–11605–00 PISTON RING SET (0.50MM O/S) 1 AP
4 447–11633–00 PIN, PISTON 1
7WX2
7WY2
583–11633–00 PIN, PISTON 1
5 93450–21053 CIRCLIP 2 2
6 JN6–11650–00 CONNECTING ROD ASSY 1 1
7 JN6–11654–00 .BOLT, CONNECTING ROD 2 2
8 7WG–11454–00 WEIGHT 1 1 1
2
FIG. 3 GOVERNOR 1
REF.
NO.
10 90468–12006 CLIP 1 1
11 7RK–11924–10 ARM, GOVERNOR 1 1
12 97027–06030 BOLT 1 1
13 92907–06600 WASHER, PLATE 1 1
14 90173–06017 NUT, SQUARE 1 1
15 7RH–11928–00 ROD, LINK 1 1
PART NO. DESCRIPTION REMARKS
1 7RH–11970–00 FLYWEIGHT SHAFT ASSY. 1 1
2 7RH–11913–00 .WEIGHT 3 3
3 7FK–11914–00 .SHAFT, WEIGHT 3 3
4 90201–065K7 WASHER, PLATE 1 1
5 93440–06107 CIRCLIP 1 1
6 90201–067L0 WASHER, PLATE 1 1
7 7KY–11917–00 COLLAR 1 1
8 7RH–11922–00 FORK, GOVERNOR 1 1
9 90201–08092 WASHER, PLATE 2 2
7WX2
7WY2
16 90506–04458 SPRING, TENSION 1 1
17 7RK–11950–11 ADJUST PLATE COMP . 1 1
18 98507–05030 .SCREW, PAN HEAD 1 1
19 90501–090A8 .SPRING, COMPRESSION 1 1
20 7RK–11925–20 SPRING, GOVERNOR 1 1
3
FIG. 4 CAMSHAFT.VALVE
REF.
NO.
10 22F–12159–00 SCREW, VALVE ADJUSTING 2 2
11 90170–05302 NUT 2 2
12 J38–12156–00 SHAFT, ROCKER 2 1 1
13 JN6–12154–00 ROD, VALVE PUSH 2 2
14 4G0–12119–00 SEAL, VALVE STEM 1 1
PART NO. DESCRIPTION REMARKS
1 7WG–12170–00 CAMSHAFT ASSY 1 1 1
2 7WG–12287–00 .SPRING, DECOMPRESSION 1 1
3 JN6–12111–01 VALVE, INTAKE 1 1
4 7RH–12121–00 VALVE, EXHAUST 1 1
5 JN6–12153–00 LIFTER, VALVE 2 2
6 90501–264A9 SPRING, COMPRESSION 2 2
7 J38–12117–01 RETAINER, VALVE SPRING 2 2
8 J38–12118–00 COTTER, VALVE 2 2
9 JN6–12151–00 ARM, VALVE ROCKER 2 2
7WX2
7WY2
4
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