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McCulloch M4620 Manual

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9
CHAIN BRAKE
Ensure chain brake is disengaged by pulling
the front hand guard back toward the front han-
dle as far as possible. The chain brake must
be disengaged before cutting with the saw .
WARNING: The chain must not
move when th e engine runs at idle speed. If
the chain moves at idle speed ref er to CAR-
BURET OR ADJUSTMENT within this
manual. Avoid contact with the muffler. A hot
muffler can cause serious burns.
To stop the engine, move the ON/STOP
switch to the ST OP position.
To start the engine, hold the saw firmly on
the ground as illustrated below. Make sure
the chain is free to turn without contacting
any object.
Hold saw firmly while pulling starter rope.
Use only 15″ --- 1 8″ ( 40 --- 4 5 c m ) o
f
rope
per pull.
Right foot through rear handle
Starter rope handle
Left hand
on front
handle
IMPORTANT POINTS TO REMEMBER
When pulling the starter rope, do not use the full
extent of the r ope as this can cause the rope to
break. Do not l et starter rope snap back. Hold
the handle and let the rope rewind slowly.
For cold weather starting, start the unit atfull
choke; allow the engine to warm up before
squeezing the throttle trigger.
NOTE: Do not cut material with the choke/fast
idle lever at the FULL CHOKE position .
STARTING A COLD ENGINE (or a
warm engine after running out of
fuel)
NOTE
: Inthefollowing steps, when thec ho-
ke/fast idle lever is pulled out to the full ex-
tent, the correct throttle setting for starting is
set automatically.
1. Move ON/STOP switch to t he ON posi-
tion.
2. Pull out choke/fast idle to the full extent
(to the FULL CHOKE position).
3. Pull the starter rope sharply with your
right hand a maximum of 5 times. Then,
proceed to the next step.
NOTE: If the engine sounds as if it is trying
to start before the 5th pull, stop pulling and
immediately proceed to the next step.
4. Push the choke/fast idle lever in to the
HALF CHOKE position.
5. Pull the starter rope sharply with your
right hand until the engine s tarts.
6. Allow the engine to run f or approximately
30 seconds. Then, squeeze and release
throttle trigger to allow engineto r eturnto
idle speed.
ON/STOP SWITCH
CHOKE/FAST IDLE LEVER
FULL HALF OFF
STARTING A WARM ENGINE
1. Move ON/STOP switch to t he ON posi-
tion.
2. Pull the choke/fast idle lever out to the
HALF CHOKE position.
3. Pull the starter rope sharply with your
right hand until the engine s tarts.
4. Squeeze and release throttle trigger to
allow engine to r e turn to idle speed.
DIFFICULT STARTING (or starting a
flooded engine)
The engine may be flooded with too much
fuel if it has not started after 10 pulls.
Flooded engines can be cleared of excess
fuel by pushing the choke/fast idle lever in
completely (to the OFF CHOKE position)
and then f ollowing the warm engine starting
procedure listed above. Ensure the ON/
STOP switch is in the ON position. Starting
could require pulling the starter rope handle
many times dependingon how badly the unit
is flooded. If engine fails to start, refe r to the
TROUBLESHOOTING TABLE.
CHAIN BRAKE
WARNING: If the brake band is worn
too thin it may break when the chain brake is
triggered. With a broken brake band, t he chain
brake will not stop the chain. The chain brake
should be replaced by an authorized service
dealer if any part i s worn to less than 0,02″ (0,5
mm) thick. Repairs on a chain brake should be
made by an authorized service dealer. Take
your unit t o t he pl ace of purchase if purchased
from a servicing dealer, o r to the nearest autho-
rized master service dealer.
S This saw is equipped with a chain brake.
The brake is designed to stop the chain if
kickback occurs.
S The inertia activated chain brake is acti-
vated if t he front hand guard is pushed f or-
ward, either manually or by centrifugal
force.
S If the brake is already activated, it is disen-
gaged by pulling thefront hand gu ard back
toward the fro nt handle as far as possible.
S When cutting with the saw, the chainbrake
must be disengaged.
… 9 …


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