To Start Engine; Re-Starting A Warm Engine; To Stop Engine; Chain Brake Operational Test - McCulloch TimberBear TM502 User Manual

5-3. RE-STARTING A WARM ENGINE (LESS
THAN 10 MINUTES SINCE STOPPING)
1. Make sure the switch is in the ON position.
2. Move the choke lever to horizontal position.
3. Depress the primer bulb 10 times.
4. Pull the starter rope rapidly 4 times. The engine should
start.
5. The automatic choke will disengage when trigger is
pulled.
6. Release the throttle trigger for idle.

5-4.TO STOP ENGINE

1. Release trigger and allow engine to return to idle
speed.
2. Move STOP switch up to stop engine.
NOTE: For emergency stopping, simply activate CHAIN
BRAKE ® and move STOP switch up.
INERTIA CHAIN BRAKE
NOTE: THIS SAW IS EQUIPPED WITH AN INERTIA
CHAIN BRAKE.IF THE SAW KICKS BACK WHILE IN USE,
THE INERTIA OF THE MOVING SAW WILL ACTIVATE
THE BRAKE. A BRAKE BAND AROUND THE CLUTCH
DRUM ACTIVATES AND STOPS THE MOVING CHAIN.
5-5.CHAIN BRAKE ®
Test the CHAIN BRAKE
function.
Perform a CHAIN BRAKE
ing extensive cutting, and definitely following any CHAIN
®
BRAKE service.
TEST CHAIN BRAKE ® AS FOLLOWS:
1. Place saw on a clear, firm, flat surface.
2. Start engine.
3. Grasp the rear handle (A) with your right hand (Figure
5-5A).
4. With your left hand, hold the front handle (B) [not
®
CHAIN BRAKE lever (C)] firmly (Figure 5-5A).
5. Squeeze the throttle trigger to 1/3 throttle, then imme-
diately activate the CHAIN BRAKE
5A).
WARNING
Activate the CHAIN BRAKE
the chain from touching anything; don't let the saw tip for-
ward.
6. Chain should stop abruptly. When it does, immediately
release the throttle/trigger.
WARNING
If chain does not stop, turn engine off and take your unit to
the nearest Authorized Service Center for service.
®
7. If CHAIN BRAKE functions properly, turn the engine
off and return the CHAIN BRAKE
GAGED position.
5 - OPERATING INSTRUCTIONS
®
ACTION :
OPERATIONAL TEST
®
periodically to ensure proper
®
test prior to initial cutting, follow-
®
lever (C) (Figure 5-
®
slowly and deliberately. Keep
®
to the DISEN-
A

5-6.SAW CHAIN / BAR LUBRICATION

Adequate lubrication of the saw chain is essential at all
times to minimize friction with the guide bar.
Never starve the bar and chain of oil. Running the saw with
too little oil will decrease cutting efficiency, shorten saw
chain life, cause rapid dulling of chain, and cause exces-
sive wear of bar from overheating. Too little oil is evidenced
by smoke, bar discoloration or pitch build-up.
NOTE: Saw chain stretches during use, particularly when it
is new, and it will occasionally be necessary to adjust and
tighten it. New chain will require adjustment after about 5
minutes of operation.

5-7.AUTOMATIC OILER

Your chain saw is equipped with an automatic gear driven
oiler system. The oiler automatically delivers the proper
amount of oil to the bar and chain. As the engine speed
increases, so does the oil flow to the bar pad. The amount
of oil flowing to the bar and chain may be changed by turn-
ing the adjustment screw (A) as shown in Figure 5-7A. Turn
the screw clockwise to DECREASE oil flow and counter-
clockwise to INCREASE the flow.
A
12
B
C
5-5A
5-7A