Manual McCulloch Mac742 (page 9 of 17) (English, German, French, Spanish)

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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 of oil with 5 liters of unleaded 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 read and follow t he safety rules relating

to fuel before fueling your unit.

IMPORTANT

Experience indicates that alcohol blended fuels

(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 or longer . Drain the gas tank, start the en-

gine and let it run until the fuel lines and carbu-

retor are empty. Use fresh fuel next season.

Never use engine or carburetor cleaner prod-

ucts in the fuel tank orpermanent damage may

occur.

CHAIN BRAKE

Ensure chain brake is disengaged by pulling

the front hand guard back toward the front han-

dle as f ar as possible. The chain brake must be

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 to CAR-

BURETOR 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 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

When pulling the starter rope, do not use the full

extent of the rope as this can cause the rope to

break. Do not let starter rope snap back. Hold

the handle and let the rope rewind slowly.

For cold weather starting, start the unit at full

choke; allow the engine to warm up before

squeezing the throttle trigger.

NOTE:Do not cut material with the choke/fast

idle le ver at the FULL CHOKE position.

STARTING A COLD ENGINE (or a

warm engine after running out of

fuel)

NOTE

:In thefollowing steps,when thecho-

ke/fast idle lever is pulled out to the full ex-

tent, the correct throttle setting for starting is

set automatically.

IGNITION

SWITCH

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 tim es with

your right hand. 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.

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. Allow the engine to run for approximately

30 seconds. Then, squeeze and release

throttle triggerto allow engine to returnto

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 trigger to

allow engine to return to idle speed.

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McCulloch Mac742 Manual

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