Yamaha DT501988 Owner's Manual page 89

Model
DT50W
Engine oil (2-cycle):
Type
Yamalube 2-cycle oil or air cooled 2-stroke engine oil
Capacity
1.3 L (1.1 Imp qt, 1.4 US qt)
Transmission oil:
Type YAMALUBE 4 (10W30) or
SAE 10W30 type SE motor oil
Capacity
Periodic oil change
0.7 L (0.61 Imp qt, 0.74 US qt)
Total amount
0.75 L (0.66 Imp qt, 0.79 US qt)
Radiator capacity:
(Including all routes) 0.6 L (0.53 Imp qt, 0.63 US qt)
Air filter:
Wet type element
Fuel:
Type
REGULAR UNLEADED GASOLINE
Tank capacity
8.5 L (1.9 Imp gal, 2.2 US gal)
Reserve amount
2.0 L (0.4 Imp gal, 0.5 US gal)
Carburetor:
Type/manufacturer VM16SS/MIKUNI
Spark plug:
Type/Manufacturer
BR8ES/NGK
Gap
0.7 ~ 0.8 mm (0.028 ~ 0.031 in)
9-2