Yamaha WOLVERINE 450 YFM45FXY Owner's Manual page 104

3. Place a container under the engine, and then
remove the coolant drain bolt. (Use a trough
or a similar object as shown to prevent coolant
from spilling on the footrest.)
1. Coolant drain bolt
8
1. Trough
4. Remove cowling A. (See page 8-9.)
5. Remove the radiator cap.
1. Radiator cap
8-29