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2-11
Always use the size and type of tires specified
in this manual.
Always maintain proper tire pressure as de-
scribed in this manual.
Never exceed the stated load capacity. Cargo
should be as far forward in the bed as possible,
and distributed evenly from side to side. Be
sure cargo is secured so that it cannot move
around during operation. Reduce speed and
follow instructions in this manual for carrying
cargo or pulling a trailer. Allow greater distance
for braking.
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EVU01380
Tires
WARNING
Use of improper tires on this vehicle, or opera-
tion of this vehicle with improper or uneven
tire pressure, may cause loss of control, in-
creasing your risk of accident.
Pay attention to the following.
1. The tires listed below have been approved
by Yamaha Motor Manufacturing corpora-
tion of America for this model. Other tire
combinations are not recommended.ACE-01E2. The tires should be set to the recommend-
ed pressure:
Recommended tire pressure
Front 70 kPa (0.70 kgf/cm
2, 10 psi)
Rear 98 kPa (0.98 kgf/cm2, 14 psi)
Manufacturer Size Type
Front GOODYEAR 25
× 8-12NHS RAWHIDE RS
Rear GOODYEAR 25
× 10-12NHS RAWHIDE RS
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10-4
Spark plug:
Type/manufacturer DPR8EA-9/NGK
Spark plug gap 0.8–0.9 mm (0.031–0.035 in)
Clutch type: Wet, centrifugal automatic
Transmission:
Primary reduction system V-belt
Secondary reduction system Shaft drive
Secondary reduction ratio 41/21
× 24/18
× 33/9 (9.544)
Transmission type V-belt automatic
Operation Right hand operation
Reverse gear 25/17 (1.471)
Sub transmission ratio low 35/17 (2.058)
high 28/19 (1.473)
Chassis:
Frame type Steel tube frame
Caster angle 5.0°
Trail 26.0 mm (1.02 in)
Tire:
Ty p e Tu b e l e s s
Size front 25
× 8-12NHS
rear 25 × 10-12NHS Model YXR660FA
U5UG61.book Page 4 Monday, September 6, 2004 9:00 AM