2017 YAMAHA YFM90 oil type

8-12
8
TIPThe engine oil should be between the minimum
and maximum level marks. 5. If the engine oil is at or below the minimumlevel mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
NOTICE: Be sure the engine oil is at the
correct level, otherwise engine damage
may result.
[ECB00852]
6. Insert the dipstick into the oil filler hole, and then tighten the engine oil filler cap.
To change the engine oil 1. Place the ATV on a level surface.
2. Start the engine, warm it up for several minu- tes, and then turn it off.
3. Place an oil pan under the engine to collect the used oil.
4. Remove the engine oil filler cap, and then re- move the engine oil drain bolt to drain the oil
from the crankcase. NOTICE: When remov-
ing the engine oil drain bolt, the compres-
sion spring, oil strainer and O-ring will fall
out. Take care not to lose these parts.
[ECB00312]
1. Engine oil filler cap
2. Engine oil dipstick
3. Maximum level mark
4. Minimum level mark
1342
UBD361E0.book Page 12 Monday, January 25, 2016 10:53 AM

10-1
10
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: 89 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
Type:
SAE 10W-30 or 20W-40
Recommended engine oil grade: API service SG type or higher, JASO standard MA
Engine oil quantity: Periodic oil change: 0.90 L (0.95 US qt, 0.79 Imp.qt)
UBD361E0.book Page 1 Monday, January 25, 2016 10:53 AM

10-2
10
Transmission oil:Type:SAE 80W-90
Quantity:
0.35 L (0.37 US qt, 0.31 Imp.qt)Air filter:Air filter element:Wet elementFuel:Recommended fuel:Regular unleaded gasoline only
Fuel tank capacity: 6.6 L (1.74 US gal, 1.45 Imp.gal)
Fuel reserve amount:
0.9 L (0.24 US gal, 0.20 Imp.gal)Carburetor:Type × quantity:
H66D x 1Spark plug (s):Manufacturer/model: NGK/CR6HSA
Spark plug gap: 0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:Dry, centrifugal automaticTransmission:Secondary reduction system:
Chain drive
Secondary reduction ratio: 35/14 (2.500) Transmission type:
V-belt automatic
Operation: Centrifugal automatic type
Chassis:Frame type:Steel tube frame
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)
UBD361E0.book Page 2 Monday, January 25, 2016 10:53 AM

10-3
10
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 operation
Front suspension:Type:Swing axle
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel: 126 mm (5.0 in)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 × 1
UBD361E0.book Page 3 Monday, January 25, 2016 10:53 AM