Yamaha YFM90RA Owner's Manual page 37

Set tire pressures to the following specifications:
Recommended pressure:
Front
25 kPa (3.6 psi) (0.25 kgf/cm
Rear
25 kPa (3.6 psi) (0.25 kgf/cm
Minimum:
Front
22 kPa (3.2 psi) (0.22 kgf/cm
Rear
22 kPa (3.2 psi) (0.22 kgf/cm
The tire pressure gauge is included as standard
equipment. Make two measurements of the tire
pressure and use the second reading. Dust or dirt
in the gauge could cause the first reading to be
incorrect.
2
)
2
)
2
)
2
)
1. Low-pressure tire gauge
5-5
1
5