Yamaha YFM250R Owner's Manual page 118

Engine oil quantity:
Without oil filter element replacement:
1.25 L (1.32 US qt) (1.10 Imp.qt)
1
With oil filter element replacement:
1.35 L (1.43 US qt) (1.19 Imp.qt)
2
Air filter:
Air filter element:
3
Wet element
Fuel:
4
Recommended fuel:
Regular unleaded gasoline only (EUR)
Unleaded gasoline only (AUS)(NZL)
5
Fuel tank capacity:
9.0 L (2.38 US gal) (1.98 Imp.gal)
6
Fuel reserve amount:
1.0 L (0.26 US gal) (0.22 Imp.gal)
7
Carburetor:
Manufacturer:
8
MIKUNI
Type x quantity:
BSR29 x 1
9
Spark plug (s):
Manufacturer/model:
10
NGK/DR7EA
Spark plug gap:
11
0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, multiple-disc
Operation:
Left hand operation
Transmission:
Primary reduction system:
Spur gear
Primary reduction ratio:
76/22 (3.455)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
38/14 (2.714)
Transmission type:
Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio:
1st:
37/13 (2.846)
2nd:
33/18 (1.833)
3rd:
29/21 (1.381)
4th:
27/24 (1.125)
5th:
28/29 (0.966)
Chassis:
Frame type:
Steel tube frame
Caster angle:
6.0 °
Trail:
23.0 mm (0.91 in)
10-2