Yamaha GRIZZLY ULTRAMATIC YFM660FP Owner's Manual page 421

Carburetor:
Type / quantity
Manufacturer
Spark plug:
Type/manufacturer
Spark plug gap
Clutch type
Transmission:
Primary reduction system
Secondary reduction system
Secondary reduction ratio
Transmission type
Operation
Reverse gear
Sub transmission ratio
Chassis:
Frame type
Caster angle
Trail
Model
low
high
BSR42 / 1
MIKUNI
DPR8EA-9 / NGK
0.8 ~ 0.9 mm
Wet, centrifugal automatic
V-belt
Spur gear
39/24 × 24/18 × 33/9 (7.944)
V-belt automatic
Left hand operation
25/17 (1.471)
37/15 (2.466)
28/19 (1.473)
Steel tube frame
5°
26 mm
10-4
YFM660FP