John Deere PA01186 CS71 - Manual (Page 14)

14 English
OPERATION
Chain Brake Operation
Refer to Safety-Chain Brake Section before use.
The chain brake Run Position (A) and Brake Position (B) are
illustrated below.
The chain brake operating condition should be checked prior to
each use as follows:
1. Start the engine and grasp front and rear handles securely
with both hands.
2. Pull the throttle trigger to bring the chain saw up to full speed.
Using the back of your left hand, engage the chain brake by
pushing the chain brake lever / hand guard toward the bar
while the chain is rotating rapidly, see illustration (C).
3. The chain brake should engage and stop the chain immedi-
ately, if not, take the saw to a John Deere Servicing Dealer for
repair and discontinue use until the repair is made.
4. Reset the chain brake back into the run position by grasping
the guide bar side (right side from operator's position) of the
chain brake lever / hand guard and pull toward the front handle
until an audible click is heard. See Illustration (D).
WARNING
If chain brake does not stop the chain immediately, take
the saw to a John Deere Servicing Dealer for repair prior
to use.
Run Position
(A)
Brake
Position
(B)
Carburetor Adjustment - Cont'd
This engine is designed and manufactured in order to comply
with EPA (Environmental Protection Agency) Phase 1 regula-
tions. The carburetor is factory set and should not require
adjusting. The carburetor will permit only limited adjustment of
the “L” (Low Jet) and “H” (High Jet) needles. Any adjustment
should be done by a John Deere Servicing Dealer.
Under no circumstances should the “L” (Low Jet) and “H” (High
Jet) needles be forced outside the range of adjustment.
WARNING
Weather conditions and altitude may affect carbure-
tion.
Do not allow bystanders close to the chain saw while
adjusting the carburetor.
WARNING
THE SAW CHAIN SHOULD NEVER TURN AT IDLE. Turn
the idle speed screw “T” counterclockwise to reduce
the idle RPM and stop the chain, or contact a John Deere
Servicing Dealer for adjustment and discontinue use
until the repair is made.
Serious personal injury may result from the saw chain
turning at idle.
WARNING
Serious damage can occur to the engine if improper
adjustments are made to the “L” and “H” needles.
Do not force the “L” and “H” needles outside the adjust-
ment range!
Idle Speed Adjustment
• If the engine starts, runs, and accelerates but will not idle; turn
the idle speed screw “T” clockwise to increase idle speed.
• If the chain turns at idle, turn the idle speed screw “T”
counterclockwise to reduce the idle RPM and stop the chain
movement. If the saw chain still moves at idle speed, contact
a John Deere Servicing Dealer for adjustment and discontinue
use until the repair is made.
H
L
T
D
C