Ryobi P2507 Manuel D'utilisation page 17

 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. Improper operation of the
chain saw could result in serious personal injury.
 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. Improper
operation of the chain saw could result in seri-
ous personal injury.
PROPER CUTTING STANCE
See Figure 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 illus-
trated in figure 12. Kneeling could result in loss
of stability and control of the chain saw, result-
ing 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