Yamaha BEAR TRACKER YFM250XS Owner's Manual page 356

Model
Final gear oil:
Type
Quantity:
Periodic oil change
Air filter:
Fuel:
Type
Tank capacity
Reserve amount
Carburetor:
Type × quantity
Manufacturer
Spark plug:
Type / manufacturer
Gap
Clutch type:
SAE 80 API "GL-4" Hypoid gear oil
0.25 L
Dry element
Unleaded gasoline only
For Europe: Regular unleaded gasoline only with
a research octane number of 91 or higher
12 L
1.6 L
BST34 × 1
MIKUNI
DR7EA / NGK
0.6–0.7 mm
Wet, centrifugal automatic
10-3
YFM250X