Yamaha BIG BEAR PROFESSIONAL 400 YFM400FPT Owner's Manual page 220

WARNING
_
G
Always follow proper procedures for
climbing hills as described in this Owner's
Manual.
G
Always check the terrain carefully before
you start up any hill.
G
Never climb hills with excessively slippery
or loose surfaces.
G
Shift your weight forward.
G Never open the throttle suddenly or make
sudden gear changes. The ATV could flip
over backwards.
G
Never go over the top of any hill at high
speed. An obstacle, a sharp drop, or anoth-
er vehicle or person could be on the other
side of the hill.
_
7-49