2003 YAMAHA GRIZZLY 660 wheel

8-117 1. Arrow mark
1. Flèche
1. Marca en forma
1. Tapered nut
1.Écrou conique
1. Tuerca cónica
EBU01121
Wheel installation
1. Install the wheel and the nuts.NOTE:_

Tapered nuts are used for both the front and
rear wheels. Install the nut with its tapered
side towards the wheel.


The arrow mark on the tire must point to-
ward the rotating direction of the wheel.
2. Lower the ATV so that the wheel is on the
ground.
3. Tighten the wheel nuts to the specified
torque.
Wheel nut torque:
Front: 55 Nm (5.5 m·kgf)
Rear: 55 Nm (5.5 m·kgf)
U5KM61.book Page 117 Friday, July 26, 2002 11:13 AM

8-125 1. Main fuse 2. Spare fuse
3. Headlight fuse 4. Ignition fuse
5. Auxiliary DC jack fuse 6. Four-wheel drive fuse
7. Signaling system fuse 8. Odometer fuse (Backup)
9. Spare fuse (× 3)
1. Fusible principal 2. Fusible de rechange
3. Fusible de phare 4. Fusible d’allumage
5. Fusible de prise pour accessoires
6. Fusible du système 4x4
7. Fusible du système de signalisation
8. Fusible du compteur kilométrique
9. Fusible de rechange (× 3)
1. Fusible principal 2. Fusible de repuesto
3. Fusible del faro
4. Fusible del sistema de encendido
5. Fusible de la toma de CC auxiliar
6. Fusible del sistema de tracción en las cuatro ruedas
7. Fusible del sistema de señalización
8. Fusible del cuentakilómetros (reserva)
9. Fusible de repuesto (× 3)
EBU00745*
Fuse replacement
1. The main fuse case and the fuse box are lo-
cated the seat.
2. If a fuse is blown, turn off the main switch and
install a new fuse of the specified amperage.
Then, turn on the switches. If the fuse imme-
diately blows again, consult a Yamaha deal-
er.
Specified fuses:
Main fuse: 30 A
Headlight fuse: 15 A
Ignition fuse: 10 A
Auxiliary DC jack fuse: 10 A
Four-wheel-drive fuse: 3 A
Signaling system fuse: 10 A
Odometer fuse (Backup): 10 A
U5KM61.book Page 125 Friday, July 26, 2002 11:13 AM

9-1
EBU00420
CLEANING AND STORAGE
A. CLEANING
Frequent, thorough cleaning of your machine will
not only enhance its appearance but will improve
its general performance and extend the useful life
of many components.
1. Before cleaning the machine:
a. Block off the end of the exhaust pipe to pre-
vent water entry. A plastic bag and strong
rubber band may be used.
b. Make sure the spark plug and all filler caps
are properly installed.
2. If the engine case is excessively greasy, ap-
ply degreaser with a paint brush. Do not ap-
ply degreaser to the wheel axles.
3. Rinse the dirt and degreaser off with a garden
hose. Use only enough pressure to do the
job.
U5KM61.book Page 1 Friday, July 26, 2002 11:13 AM

9-3
CAUTION:
Excessive water pressure may cause water
seepage and deterioration of wheel bearings,
brakes, transmission seals and electrical de-
vices. Many expensive repair bills have result-
ed from improper high pressure detergent
applications such as those available in coin-
operated car washers.4. Once the majority of the dirt has been hosed
off, wash all surfaces with warm water and
mild, detergent-type soap. An old toothbrush
or bottle brush is handy for hard-to-get-at
places.
5. Rinse the machine off immediately with clean
water and dry all surfaces with a chamois,
clean towel or soft absorbent cloth.
6. Clean the seat with a vinyl upholstery cleaner
to keep the cover pliable and glossy.
U5KM61.book Page 3 Friday, July 26, 2002 11:13 AM

9-7
EBU00427
B. STORAGE
Long term storage (60 days or more) of your ma-
chine will require some preventive procedures to
guard against deterioration. After thoroughly
cleaning the machine, prepare for storage as fol-
lows:
1. Fill the fuel tank with fresh fuel and add fuel
stabilizer (if available).NOTE:Use of fuel stabilizer eliminates the need to drain
the fuel system. Consult a Yamaha dealer if the
fuel system is to be drained instead.2. Remove the spark plug, pour about one ta-
blespoon of SAE 10W30 or 20W40 motor oil
in the spark plug hole and reinstall the spark
plug. Ground the spark plug wire and turn the
engine over several times to coat the cylinder
wall with oil.
3. Lubricate all control cables.
4. Block up the frame to raise all wheels off the
ground.
U5KM61.book Page 7 Friday, July 26, 2002 11:13 AM

10-1
EBU00428
12-SPECIFICATIONS
Model YFM660F
Dimensions:
Overall length 2,085 mm
Overall width 1,150 mm
Overall height 1,210 mm
Seat height 880 mm
Wheelbase 1,275 mm
Minimum ground clearance 275 mm
Minimum turning radius 3,200 mm
Basic weight:
With oil and full fuel tank 290 kg
Noise and vibration level:
Noise level (77/311/EEC) 80 dB (A)
Vibration on seat (EN1032, ISO5008) Not exceed 0.5 m/s
2
Vibration on handlebar (EN1032, ISO5008) 2.8 m/s
2
Engine:
Engine type Liquid-cooled 4-stroke, SOHC
Cylinder arrangement Forward-inclined single cylinder
Displacement 660 cm
3
Bore
× stroke 100
× 84 mm
U5KM61.book Page 1 Friday, July 26, 2002 11:13 AM

10-5
Tire:
Type Tubeless
Size (front) AT25
× 8-12
(rear) AT25 ×10 - 12
Brake:
Front brake type Dual disc brake
operation Right hand operation
Rear brake type Single disc brake
operation Left hand and right foot operation
Suspension:
Front suspension Double wishbone
Rear suspension Double wishbone
Shock absorber:
Front shock absorber Coil spring / Oil damper
Rear shock absorber Coil spring / Oil damper
Wheel travel:
Front wheel travel 170 mm
Rear wheel travel 225 mm
Electrical:
Ignition system DC. C.D.I.
Generator system A.C. magneto
Battery type YTX20L-BS
Battery capacity 12 V, 18 AhModel YFM660F
U5KM61.book Page 5 Friday, July 26, 2002 11:13 AM

10-6
Headlight type: Krypton bulb
Bulb voltage, wattage
× quantity:
Headlight 12 V, 30 W / 30 W
× 2
Tail/brake light 12 V, 5 W / 21 W
× 1
Indicator light:
Neutral indicator light LED
× 1
Reverse indicator light LED
× 1
Coolant temperature warning light LED
× 1
Park position indicator light LED
× 1
High gear position indicator light LED
× 1
Low gear position indicator light LED
× 1
Differential gear lock indicator light LED
× 1
Specified fuses:
Main fuse 30 A
Headlight fuse 15 A
Ignition fuse 10 A
Auxiliary DC jack fuse 10 A
Four-wheel drive fuse 3 A
Signaling system fuse 10 A
Odometer fuse (backup) 10 AModel YFM660F
U5KM61.book Page 6 Friday, July 26, 2002 11:13 AM