Yamaha BIG BEAR PROFESSIONAL 400 YFM400FPT Owner's Manual page 270

1. Engine oil drain bolt
3. Compression spring
1. Boulon de vidange de l'huile
3. Ressort de compression
1. Perno de drenaje del aceite de motor
3. Muelle de compresión
1. Clamp
1. Bride
1. Mordaza
2. O-ring
4. Oil strainer
2. Joint torique
4. Crépine à huile
2. Junta tórica
4. Colador de aceite
8-19
5. If the engine oil is at or below the minimum
level mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
CAUTION:
_
Make sure that no foreign material enters the
crankcase.
_
6. Insert the dipstick into the oil filler hole, and
then tighten the engine oil filler cap.
To change the engine oil (with or without oil fil-
ter element cleaning)
1. Place the ATV on a level surface.
2. Warm up the engine for several minutes, and
then turn it off.
3. Place a container 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.