Ryobi RY40502 Manuel D'utilisation page 17

 Wear non-slip gloves for maximum grip and
protection.
 Hold the saw firmly with both hands. Always
keep your left hand on the front handle and your
right hand on the rear handle so that your body
is to the left of the chain line.
WARNING:
Never use a left-handed (cross-handed) grip,
or any stance which would place your body or
arm across the chain line.
 Maintain a proper grip on the saw whenever
the unit is running. The fingers should encircle
the handle and the thumb is wrapped under the
handlebar. This grip is least likely to be broken
(by a kickback or other sudden reaction of the
saw). Any grip in which the thumb and fingers
are on the same side of the handle, is dangerous
because a slight kick of the saw can cause loss
of control.
WARNING:
Do not operate the switch trigger with your left
hand and hold the front handle with your right
hand. Never allow any part of your body to be
in the chain line while operating a saw.
PROPER CUTTING STANCE
See Figures 11 - 12.
WARNING:
Always use the proper cutting stance described
in this section. Never kneel when using the chain
saw, except when felling a tree as illustrated
in Figure 12. Kneeling could result in loss of
stability and control of the chain saw, resulting
in serious personal injury.
 Weight should be balanced with both feet on
solid ground.
 Keep left arm with elbow locked in a "straight
arm" position to withstand any kickback force.
 Your body should always be to the left of the
chain line.
 Thumb should be on underside of handlebar.
OPERATION
CHAIN LINE
17 - English
CHAIN LINE
STRAIGHT ARM
POSITION
Fig. 9
Fig. 10
Fig. 11
Fig. 12