Manual McCulloch M4620 (page 15 of 19) (English, French, Portuguese, Spanish)

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S Chain moves at idle. S ee IDLE SPEED--T

adjusting procedure.

S Saw will not idle. See IDLE SPEED--T ad-

justing procedure.

Idle Speed---T

Allow engine to idle. If the chain moves, idle

is toofast. If the enginestalls, idleistooslow.

Adjust speed until engine runs without chain

movement (idle too f ast) or stalling (idle too

slow). The idle speed screw is located in the

area above the primer bulb and is labeled T.

S Turn idle speed s crew (T) c lockwise to in-

crease engine speed.

S Turn idle speed screw (T) counterclock-

wise to decrease engine speed.

STORAGE

WARNING: Stop engine and allow to

cool, and secure the unit before storing or

transporting in a vehicle. Store unit and fuel

in an area where fuel vapors cannot reach

sparks or open flames fro m water heaters,

electric motors or switches, furnaces, etc.

Store unitwithallguards inplace. Position so

that any sharp object cannot accidentally

cause injury to passersby . Store the unit out

of reach of children.

S Before storing, drain all fuel from the unit.

Start engine and allow to run until it stops.

S Clean the unit befor e storing. Pay p articu-

lar attention to the air intake area, keeping

it free of debr is. Use a m ild deter gent and

sponge to clean the plastic surfaces.

S Do notstore theunit or fuel ina closedarea

where fuel vapors can rea ch sparks or an

openflamefrom hotwater hea ters, electric

motors or switches, furnaces, etc.

S Store i n a dr y area out of the reach of chil-

dren.

S Ensure the machine i s cleaned and that a

complete service is carried out before

long--term storage.

S The guide bar and chain must always be

covered with a scabbard when the m achine

is being transported or in storage in order to

prevent accident contact with the sharp

chain. Even a non--moving chain can cause

serious cuts to yourself or p ersons you

bump into with an exposed chain.

CAUTION: It is imp ortant to prevent

gum deposits from forming in essential fuel

system parts such as the carburetor , fuel fil-

ter, fuel hose, or fuel tank during storage. Al-

cohol blended fuels (called gasohol or using

ethanol or methanol) can attract moisture

which leads to fuel mixture separation and

formation of acids during storage. Acidic gas

can damage the engine.

TROUBLE CAUSE REMEDY

Engine will not

start or will run

only a few

seconds after

starting.

1. Ignition switch off.

2. Engine flood ed.

3. Fuel tank empty .

4. Spark plug not firing.

5. Fuel not reaching

carburetor.

1. Move ignition switch to O N.

2. See “Difficult Starting” in

Operation Section.

3. Fill tank with correct fuel mixture.

4. Install new spark plug.

5. Check for dirty fuel filter; replace.

Check for kinked or split fuel line;

repair or replace.

Engine will

not idle

properly.

1. Idle speed requires

adjustment.

2. Carburetor requires

adjustment.

1. See “Carburetor Adjustment” in the

Service and Adjustments Section.

2. Contact an author ized service dealer.

1. Air filter dirty.

2. Spark plug fouled.

3. Chain brake engaged.

4. Carburetor requires

adjustment.

Engine will not

accelerate,

lacks power,

or dies under

a load.

1. Clean or replace air filter.

2. Clean or replace plug and r egap.

3. Disengage chain brake.

4. Contact an authorized service dealer.

Engine

smokes

excessively.

1. Too much oil mixed with

gasoline.

1. Empty fuel tank and refill with

correct fuel m ixture.

WARNING: Always stop unit and disconnect spark plug before performing all of

the recommended remedies below except remedies thatrequire operation of the unit.

TROUBLESH OOTING TABLE

Chain moves

at idle speed.

1. Idle speed requires

adjustment.

2. Clutch requires repair.

1. See “Carburetor Adjustment” i n the

Service and Adjustments Section.

2. Contact an authorized service dealer.

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McCulloch M4620 Manual

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