Yamaha EF1000 Service Manual

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FLYWHEEL ENG 8 
--------------------------------------------------
FLYWHEEL REMOVAL 
1. Remove: 
• Flywheel CD 
Use  a magneto puller@. 
Magneto puller: 
YU-01351  (90890-01351) 
3-24  
						

							GENERATOR ENG 
GENERATOR 
4 
3 
10 Nm (1.0 m•kg, 7.2 ft•lb) 
l21 Nm (2.1 m•kg, 15.2 ft•lb) l 
JOB INSTRUCTION CHART 
Order Job name/Parts name Qty Remarks 
Removal of Generator Remove the parts in order. 
Engine Refer to ~~ENGINE" section. 
1 Bolt 3 
2 Rear frame 1 
3 Bolt 1 
4 
Rotor assembly 1 
5 Grommet 1 
6 Stator assembly 1 
3-25  
						

							3-26 
GENERATOR ENG 
ROTOR REMOVAL 
1. Remove: 
•Rotor assembly 
Rotor shock puller: 
90890-01259 
Rotor puller attachment: 
90890-01349 
STATOR  INSTALLATION 
1. Install: 
•Stator assembly 
CAUTION: 
Align the key 
						

							GOVERNOR 
Spring installation 
------------~~/ l 6 Nm (0.6 m•kg,4.3 ft•lb) I 
1 
m 
/ 
3-27 
•II II nil 
GOVERNOR ENG 8 
Spring installation  
						

							JOB INSTRUCTION CHART 
Order Job name/Parts  name 
Removal of Governor 
Generator 
Crankshaft 
1 Link  rod 
2 Spring 
3 Nut 
4 Governor arm 
5 Clip 
6 Governor fork 
7  Washer 
8 Governor assmbly 
9 Washer 
GOVERNOR ENG 
Oty Remarks 
1 
1 
1 
1 
1 
1 
1  1 
1 
3-28 
Remove the parts  in order. 
Refer 
to the GENERATOR section. 
Refer 
to the CRANKSHAFT section. 
Reverse 
the removal procedure for 
installation. 
1. Adjust: 
•Governor 
Refer to the GOVERNOR 
ADJUSTMENT section in CHAPTER 2. 
• Engine  speed (with No Load) 
Refer 
to the ENGINE  SPEED 
ADJUSTMENT section in CHAPTER 2.  
						

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CARBURETOR ENG 8 
CARBURETOR 
-------
EF1000 
Type BV15 
I.D. Mark 7FLOO 
Float height 17 mm (0.67 in) 
1!1110 9 4 
B---3 
3-29  
						

							CARBURETOR ENG 
JOB INSTRUCTION CHART 
Order Job name/Parts name Qty Remarks 
Removal of Carburetor Remove the parts in order. 
Body panel/Fuel tank Refer to the BODY PANEL/FUEL TANK 
section  in the CHAPTER 2. 
1 Link rod 1 
2 Starter (choke) wire 1 
3 Fuel hose 1 FMl-!;@l~tCJ Always clean up spilled fuel 
immediatey. 
4 Screw 2 
5 Air filter case 1 
6 Gasket 1 
7 
Carburetor assembly 1 
8 Carburetor cover 1 
9 Joint 1 
10 Gasket 1 
Reverse the removal procedure 
for installation. 
Disassembly of Carburetor 
CD Bolt 1 
@ Gasket 1 
@ Float chamber 1 
@ Gasket 1 
® Float pin 1 
@ Float 1 
(j) Clip 1 
@ Needle 1 
Reverse the disassembly procedure 
for assembly. 
3-30  
						

							Grooved wear 
3-31 
•llllull 
CARBURETOR ENG B 
FLOAT HEIGHT  INSPECTION 
1. Measure: 
•Float height 
NOTE: --------------------------
Place the carburetor in an inverted position 
for measurement. 
Lift up the float so that the tip of the float 
valve lightly contacts the float arm, and  mea­
sure the float height. (This measurement 
should be made with the gasket removed.) 
I~ 
Float height: 
17 
mm (0.67 in) 
FUEL PASSAGE  INSPECTION 
1. Inspect: 
•Carburetor body 
•Fuel passage 
Contamination---+Ciean as indicated. 
Carburetor cleaning steps: 
• Wash carburetor in petroleum based sol-
vent.  (Do not use any caustic carburetor 
cleaning solution.) 
• Blow out all passages  and jets with com­
pressed air. 
CAUTION:· --------
Never use a wire. 
VALVE SEAT  INSPECTION 
1. Inspect: 
•Valve seat 
Damage/Wear---+Replace. 
Contamination---+Ciean.  
						

							ELECTRICAL COMPONENTS I ELEC I I::=::J I 
ELECTRICAL 
ELECTRICAL COMPONENTS 
CD Oil pilot light 
@ Engine stop switch 
@ Circuit protecter(s) 
@ Stator assembly 
@ Rotor assembly 
@ Spark plug 
(j) C.D.I. unit 
4-1  
						

							CIRCUIT DIAGRAM  (120V 60Hz) 
CD Oil light @ C.D.I. magneto 
® Engine stop switch @ C.D.I. unit 
® Voltage meter @ Oil level gauge 
@ AC protector @ Condenser 
@ AC  receptacle 
@ DC protecter 
(j) DC receptacle 
@ Pilot lamp 
® Stator assembly 
@ Rotor assembly 
@ Spark plug 
CIRCUIT DIAGRAM I ELEC I u I 
COLOR  CODE 
B ....................... Black 
Br  ...................... Brown 
G .......................  Green 
Gy ..................... Gray 
Or ...................... Orange 
R .......................  Red 
W  ...................... 
White 
B/W  ................... Black/White 
W/R  ...................  White/Red 
Y  ........................ 
Yellow 
!-~G~@ 
l-·------------! --@} __ 
 ________ ... 
4-2