Yamaha BIG BEAR PROFESSIONAL 400 YFM400FPT Owner's Manual page 196

Exhaust system
The exhaust system on the ATV is very hot during
and following operation. To prevent burns, avoid
touching the exhaust system. Park the ATV in a
place where pedestrians or children are not likely
to touch it.
WARNING
_
Do not touch the hot exhaust system. Do not
park the ATV during or after operation in a
place where others might be likely to touch it.
_
7-25