McCulloch MAC 838 Chainsaw User Manual


 
9
mixed with a good quality 2-cycle air -cooled
engine oil designed to be mixed at a ratio of
40:1. A 40:1 ratio is obtained by mixing 0,125
liter ofoilwith5 liters ofunleaded gasoline. DO
NOT USE automotive or boat oil. These oils
will cause engine damage. When mixing fuel
follow the instructions printed on the container .
Always readand follow the safety rules relating
to fuel before fueling your unit.
IMPORTANT
Experienceindicates thatalcoholblendedfuels
(called gasohol or using ethanol or methanol)
can attract moisture which leads to separation
and formation of acids during storage. Acidic
gas can damage the fuel system of an engine
while in storage. To avoid engine problems,
empty the fuel system before storage for 30
days orlonger .Drain thegas tank,start the en-
gine and let it run until the fuel lines andcarbu-
retor are empty. Use fresh fuel next season.
Never use engine or carburetor cleaner prod-
ucts inthefueltank orpermanent damagemay
occur.
CHAIN BRAKE
Ensure chain brake is disengaged by pulling
thefront handguardback towardthe fronthan-
dleas f aras possible.Thechainbrakemustbe
disengaged before cutting with the saw.
WARNING: The chain must not
move when the engine runs at idle speed. If
the chain moves at idle speed refer toCAR-
BURETOR ADJUSTMENT within this
manual.Avoid contact withthemuffler.Ahot
muffler can cause serious burns.
To stop the engine, move the ON/STOP
switch to the STOP 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.
Left Hand
on Front
Handle
Starter Rope Handle
Right Foot Through Rear Handle
Use only 40 --- 45 cm of rope per pull.
Hold saw firmly while pulling starter rope.
IMPORTANT POINTS TO REMEMBER
Whenpullingthestarterrope,donotusethefull
extentof the rope as this can causethe ropeto
break. Do not let starter rope snap back. Hold
the handle and let the rope rewind slowly.
Forcold weather starting,start theunit atfull
choke; allow the engine to warm up before
squeezing the throttle trigger.
NOTE:Donotcutmaterialwiththechoke/fast
idle le ver at the FULL CHOKE position.
STARTING A COLD ENGINE (or a
warm engine after running out of
fuel)
NOTE
:Inthefollowingsteps,whenthecho-
ke/fast idle lever is pulled out to the full ex-
tent,the correct throttle settingfor startingis
set automatically.
IGNITION
SWITCH
ON
STOP
Choke
Lever
1. Move ON/STOP switch to the ON posi-
tion.
2. Slowly press primer bulb 6 times.
3. Pull out choke/fast idle to the full extent
(to the FULL CHOKE position).
4. Pull the starter rope sharply 5 times with
your right hand. Then, pro ceed to the
next step.
NOTE: If theengine sounds as if it is trying
to start before the 5th pull, stop pulling and
immediately proceed to the next step.
5. Push the choke/fast idle lever in to the
HALF CHOKE position.
OFF
HALF
CHOKE/FAST IDLE LEVER
FULL
6. Pull the starter rope sharply with your
right hand until the engine starts.
7. Allowtheenginetorunforapproximately
30seconds.Then,squeeze andrelease
throttletriggerto allowenginetoreturnto
idle speed.
STARTING A WARM ENGINE
1. Move ON/STOP switch to the ON posi-
tion.
2. Pull the choke/fast idle lever out to the
FULL CHOKE position to set the fast
idle, then push the lever in to the HALF
CHOKE position.
3. Slowly press the primer bulb 6 times.
4. Pull the starter rope sharply with your
right hand until the engine starts.
5. Squeeze and release throttle t rigger to
allow engine to return to idle speed.