Yamaha ULTRAMATIC KODIAK YFM400AP Owner's Manual page 399

Model
Spark plug:
Type/manufacturer
Spark plug gap
Clutch:
Type
Transmission:
Primary reduction system
Secondary reduction system
Secondary reduction ratio
Transmission type
Operation
Forward gear
Reverse gear
Chassis:
Frame type
Caster angle
Trail
Tire:
Type
Size
DR8EA / NGK
0.6–0.7 mm
Wet, centrifugal automatic
V-belt
Spur gear
39/24 × 24/18 × 33/9 (7.944)
V-belt automatic
Left hand operation
38/23 (1.652)
29/17 (1.706)
Steel tube frame
4°
21 mm
Tubeless
AT25 × 8 - 12
front
AT25 × 10 - 12
rear
10-4
YFM400A