Yamaha Grizzly YFM66FAV User manual

2C6-28199-11LIT-11626-19-60
READ THIS MANUAL CAREFULLY!
It contains important safety information.
This ATV should not be ridden by anyone under 16 years of age.
WARNING
YFM66FAV
OWNER’S MANUAL

EBU00776

EBU00941
1-
INTRODUCTION
Congratulations on your purchase of the Yamaha YFM66FA. It represents the result of many
years of Yamaha experience in the production of fine sporting, touring, and pace-setting racing
machines. With the purchase of this Yamaha, you can now appreciate the high degree of crafts-
manship and reliability that have made Yamaha a leader in these fields.
This manual will provide you with a good basic understanding of the features and operation of this
ATV. This manual includes important safety information. It provides information about
special techniques and skills necessary to ride your ATV. It also includes basic maintenance
and inspection procedures. If you have any questions regarding the operation or maintenance of
your ATV, please consult a Yamaha dealer.
AN IMPORTANT SAFETY MESSAGE:
●READ THIS MANUAL TOGETHER WITH TIPS FOR THE ATV RIDER CAREFULLY AND
COMPLETELY BEFORE OPERATING YOUR ATV. MAKE SURE YOU UNDERSTAND ALL
INSTRUCTIONS.
●PAY CLOSE ATTENTION TO THE WARNING AND CAUTION LABELS ON THE ATV.
●NEVER OPERATE AN ATV WITHOUT PROPER TRAINING OR INSTRUCTION. FREE
TRAINING IS AVAILABLE TO ANYONE WHO BUYS A NEW ATV. CALL 1-800-887-2887
FOR MORE INFORMATION.
●THIS ATV, AND ANY OTHER ATV OVER 90cc, SHOULD NOT BE RIDDEN BY ANYONE
UNDER 16 YEARS OF AGE.
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EBU00801
1-
IMPORTANT MANUAL INFORMATION
FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN
SERIOUS INJURY OR DEATH.
Particularly important information is distinguished in this manual by the following notations:
The Safety Alert Symbol means ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED!
WARNING
Failure to follow WARNING instructions could result in severe
injury or death to the machine operator, a bystander or a person
inspecting or repairing the machine.
CAUTION:
A CAUTION indicates special precautions that must be taken to
avoid damage to the machine.
NOTE:
A NOTE provides key information to make procedures easier or clearer.
EE.book Page 1 Thursday, March 31, 2005 6:57 PM

AFFIX DEALER
LABEL HERE
EBU15000
2-
IMPORTANT NOTICE
This ATV is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe to oper-
ate this ATV on any public street, road or highway.
This ATV complies with all applicable OFF-ROAD noise level and spark arrester laws and regu-
lations in effect at the time of manufacture.
Please check your local riding laws and regulations before operating this ATV.
EBU00981
YFM66FAV
OWNER’S MANUAL
©2005 by Yamaha Motor Corporation,
U.S.A.
1st edition, June 2005
All rights reserved.
Any reprinting or unauthorized use
without the written permission
of Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in Japan.
P/N LIT-11626-19-60
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EBU00014
WARNING
Indicates a potential hazard that could
result in serious injury or death.
CONTENTS
LOCATION OF THE WARNING
AND SPECIFICATION LABELS....... 1-1
SAFETY INFORMATION.................. 2-1
DESCRIPTION AND MACHINE
IDENTIFICATION ............................. 3-1
Identification number records.......... 3-2
Key identification number................ 3-2
Vehicle identification number .......... 3-3
Model label ...................................... 3-3
1
2
3
CONTROL FUNCTIONS...................4-1
Main switch ......................................4-1
Indicator and warning lights.............4-2
Speedometer unit ............................4-4
Handlebar switches .........................4-6
Throttle lever ..................................4-13
Speed limiter ..................................4-14
Front brake lever............................4-15
Brake pedal and rear brake
lever .............................................4-15
Drive select lever ...........................4-16
Recoil starter..................................4-16
Fuel tank cap .................................4-17
Fuel cock........................................4-18
Starter (choke) ...............................4-19
Seat................................................4-20
Storage compartment ....................4-21
Front carrier ...................................4-21
Rear carrier ....................................4-21
Front and rear shock absorber
adjustment ...................................4-22
Auxiliary DC jack............................4-24
4
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PRE-OPERATION CHECKS ........... 5-1
Front and rear brakes ..................... 5-3
Fuel ................................................. 5-5
Engine oil ........................................ 5-7
Final gear oil.................................... 5-7
Differential gear oil .......................... 5-8
Coolant............................................ 5-9
Throttle lever ................................. 5-10
Fittings and fasteners.................... 5-10
Lights............................................. 5-10
Switches........................................ 5-10
Tires .............................................. 5-11
How to measure tire pressure....... 5-13
Tire wear limit................................ 5-14
OPERATION..................................... 6-1
Starting a cold engine ..................... 6-1
Starting a warm engine................... 6-3
Warming up..................................... 6-3
Drive select lever operation and
reverse driving............................... 6-4
Engine break-in............................... 6-7
Parking ............................................ 6-8
Parking on a slope........................... 6-9
Accessories and loading ............... 6-10
RIDING YOUR ATV .......................... 7-1
Getting to know your ATV ............... 7-3
Ride with care and good
judgement...................................... 7-4
Be careful where you ride..............7-16
Turning your ATV .......................... 7-22
Climbing uphill ............................... 7-24
Riding downhill .............................. 7-30
Crossing a slope............................ 7-32
Crossing through shallow water .... 7-34
Riding over rough terrain...............7-37
Sliding and skidding....................... 7-38
What to do if................................... 7-40
What to do ..................................... 7-40
5
6
7
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PERIODIC MAINTENANCE AND
ADJUSTMENT.................................. 8-1
Owner’s manual and tool kit............ 8-1
Periodic maintenance chart for
the emission control system.......... 8-3
General maintenance and
lubrication chart ............................. 8-4
Panel removal and installation ........ 8-6
Engine oil and oil filter cartridge .... 8-15
Final gear oil .................................. 8-21
Differential gear oil......................... 8-23
Cooling system.............................. 8-25
Changing the coolant .................... 8-27
Axle boots...................................... 8-31
Spark plug inspection.................... 8-32
Air filter element cleaning.............. 8-34
Spark arrester cleaning ................. 8-38
V-belt cooling duct check hose ..... 8-39
V-belt case drain plug.................... 8-40
Carburetor adjustment................... 8-40
Idle speed adjustment ................... 8-41
Valve clearance adjustment.......... 8-41
Select lever safety system cable
adjustment ...................................8-42
Throttle lever adjustment ...............8-42
Front brake pad check...................8-43
Checking the rear brake pads .......8-43
Checking the brake fluid level........8-44
Brake fluid replacement .................8-46
Front brake lever free play.............8-47
Adjusting the rear brake lever and
brake pedal ..................................8-48
Adjusting the rear brake light
switch ...........................................8-50
Cable inspection and lubrication....8-51
Lubricating the brake levers and
brake pedal ..................................8-51
Rear knuckle upper and lower
pivot lubrication ............................8-52
Wheel removal...............................8-53
Wheel installation...........................8-53
Battery............................................8-55
Battery maintenance......................8-56
Fuse replacement ..........................8-56
Replacing a headlight bulb ............8-58
8
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Headlight beam adjustment .......... 8-60
Tail/brake light bulb
replacement ................................ 8-61
Troubleshooting ............................ 8-62
Troubleshooting charts ................. 8-63
CLEANING AND STORAGE............ 9-1
A. Cleaning...................................... 9-1
B. Storage ....................................... 9-3
SPECIFICATIONS.......................... 10-1
NOISE REGULATION.................... 11-1
MAINTENANCE RECORD ............ 12-1
ATV LIMITED WARRANTY ........... 13-1
YAMAHA EXTENDED SERVICE
(Y.E.S.) ........................................... 14-1
9
10
11
12
13
14
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1-1
EBU00464
LOCATION OF THE WARNING AND
SPECIFICATION LABELS
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