wheel YAMAHA YFM90 2018 Owner's Manual

10-1
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EBU25962
SPECIFICATIONS
Dimensions:Overall length:1485 mm (58.5 in)
Overall width: 1020 mm (40.2 in)
Overall height:
955 mm (37.6 in)
Seat height: 750 mm (29.5 in)
Wheelbase: 1030 mm (40.6 in)
Ground clearance:
100 mm (3.9 in)
Minimum turning radius: 3000 mm (118 in)Weight:Curb weight:
126.5 kg (279 lb)Noise and vibration level:Noise level (77/311/EEC):73.0 dB(A) (EUR, FRA, GBR)
Uncertainty of measurement:
3.0 dB(A) (EUR, FRA, GBR)
Vibration on seat (EN1032, ISO5008): 0.6 m/s² (EUR, FRA, GBR)
Uncertainty of measurement: 0.3 m/s² (EUR, FRA, GBR) Vibration on handle (EN1032, ISO5008):
6.3 m/s² (EUR, FRA, GBR)
Uncertainty of measurement: 1.3 m/s² (EUR, FRA, GBR)
Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement: Single cylinder
Displacement: 90 cm³
Bore × stroke:
47.0 × 51.8 mm (1.85 × 2.04 in)
Compression ratio: 9.2 : 1
Starting system: Electric starter and kickstarter
Lubrication system:
Wet sumpEngine oil:Recommended brand:YAMALUBE
UBD362E0.book Page 1 Tuesday, January 31, 2017 5:10 PM

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Caster angle:3.40 °
Trail: 19.8 mm (0.78 in)Front tire:Type:Tubeless
Size: AT18 x 7-8
Manufacturer/model:
DURO/DI2017Rear tire:Type:Tubeless
Size:
AT18 x 9-8
Manufacturer/model: DURO/DI2016Loading:Maximum loading limit:
82.0 kg (181 lb)
(Total weight of rider, cargo, accessories, and tongue)Tire air pressure (measured on cold tires):Recommended:Front:
24.0 kPa (0.240 kgf/cm², 3.5 psi)
Rear: 24.0 kPa (0.240 kgf/cm², 3.5 psi)
Minimum: Front: 20.7 kPa (0.207 kgf/cm², 3.0 psi) Rear:
20.7 kPa (0.207 kgf/cm², 3.0 psi)
Front wheel:Wheel type:
Panel wheel
Rim size: 8 x 5.5ATRear wheel:Wheel type:
Panel wheel
Rim size: 8 x 5.5ATFront brake:Type:
Mechanical leading, trailing drum brake
Operation: Right hand operationRear brake:Type:
Mechanical leading, trailing drum brake
Operation: Left hand operationFront suspension:Type:
Swing axle
Spring/shock absorber type: Coil spring/oil damper
Wheel travel: 126 mm (5.0 in)
UBD362E0.book Page 3 Tuesday, January 31, 2017 5:10 PM

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Rear suspension:Type:Swingarm
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel: 145 mm (5.7 in)Electrical system:Ignition system:
CDI
Charging system: AC magnetoBattery:Model:
GTX5L-BS
Voltage, capacity: 12 V, 4.0 AhBulb voltage, wattage × quantity:Neutral indicator light:
12 V, 3.5 W × 1
Reverse indicator light: 12 V, 3.5 W × 1Fuse:Fuse:
7.5 A
EBU30402For Europe only
The figures quoted are emission levels and are not
necessarily safe working levels. Whilst there is a
correlation between the emission and exposure
levels, this cannot be used reliably to determine
whether or not further precautions are required.
Factors that influence the actual level of exposure
of work-force include the characteristics of the
work room, the other sources of noise, etc. i.e. the
number of machines and other adjacent process-
es, and the length of time for which an operator is
exposed to the noise. Also the permissible expo-
sure level can vary from country. This information,
however, will enable the user of the machine to
make a better evaluation of the hazard and risk.
UBD362E0.book Page 4 Tuesday, January 31, 2017 5:10 PM

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Parking brake ................................................................. 4-5
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RReverse indicator light ................................................... 4-1
Riding your ATV ............................................................. 7-1SSafety information .......................................................... 2-1
Seat .............................................................................. 4-12
Shock absorber, adjusting the rear ............................. 4-14
Shock absorber assemblies, adjusting the front ......... 4-13
Spark arrester, cleaning ............................................... 8-18
Spark plug, checking ..................................................... 8-9
Specifications .............................................................. 10-1
Speed limiter .................................................................. 4-3
Starter (choke) ............................................................. 4-11
Start switch .................................................................... 4-2
Steering shaft, lubricating ............................................ 8-30
Storage .......................................................................... 9-2TThrottle lever ...........................................................4-2, 5-3
Throttle lever free play, adjusting ................................ 8-20
Tires ............................................................................... 5-3
Transmission oil ....................................................5-3, 8-14
Troubleshooting ........................................................... 8-36
Troubleshooting chart .................................................. 8-37VValve clearance ............................................................ 8-21
Vehicle identification number ...................................... 11-1WWheel hub bearings, checking .................................... 8-29Wheel, installing ........................................................... 8-35
Wheel, removing .......................................................... 8-34
UBD362E0.book Page 2 Tuesday, January 31, 2017 5:10 PM