Sears 358.356090-3.7/20 Chain Tension, Do not USE, Automotive OIL, Gasoline Containing Alcohol

E. CHAIN TENSION

•COrrect chain tension is very important:

--aloose chain will wear the bar and itself, --a loose chain can jump off the bar while

you are cutting.

--atight chain can damage the saw and/or break,

•Chain tension is correct when the chain:

--canbe lifted about 1/8" from the Guide Bar at a point near the middle of the bar, and

•--will move freely around the bar.

•The chain stretches during use, especially when new. Check tension:

:-- each time the saw is used

wmore frequently when the chain is new

Jas the chain warms up to normal operating tem- perature

•The Bar Clamp Nuts must be slightly loose to tension the chain correctly.

1.Hold the tip of the Guide Bar up and turn the Adjusting Screw. just until the,chain does not sag beneath the Guide Bar, Figureg.

'NOTE: Turn screw clockwise to tighten ten-

sion; Turn screw counterclockwise to loosen tension .....

2.Check the tension by lifting the chain from the Guide Bar at the center of the bar. Figure

'i0.

F'U'XTURE:

•Your chain saw is powered by a two-cycle

	engine which requres a fuel mixture of regu-
	_lar gasoline anda high quality engine oil spe-
	cially made for 2-cycle, air-cooled engines.
	The internal design of the 2-cycle engine re-
	quires lubrication of moving parts. Lubrica-
	tion is provided when you use the recom-
......	mended mixtureof gasoline and oil,	.

•Gasoline must be i clean and not over two months old. After :a sl_ort period of itime,

:gasoline ,begins to chemically 'break down and will form compounds that can cause hard starting and damage in 2-cycle engines.

;• The correct measure of gasoline to oil is very

: important.

:_ --Too much oil in the mixture will =fou! the

........ Spark plug.

........... --Toolittle oil will cause the engine to over-

heat resulting in damage,

•Mix the fuel thoroughly in a container since gasoline and oil do not readilycombine. Do not try to mix fuel directly in the fuel tank.

3.Continue turning the Adjusting Screw until

the tension is correct. _ .

4, Hold the tip of the Guide Bar up and tighten the Bar Clamp Nuts with the Scrench.

5, Recheck tension.

TURN

TO LOOSEN

TENSION

TURN

TO TIGHTEN

TENSION

Figure 9

CHAIN CAN BE

LIFTED 1/8"" WHEN

TENSION IS

CORRECT.

o

Figure 10

1. USE THE FOLLOWING FUEL MIXTURES:

2.DO NOT USE:

•BIA Oil (Boating Institute of America)

--Doesnot have proper additives for air- cooled, 2-cycleengines and could cause

damage.

•AUTOMOTIVE OIL-

-Does not have proper additives for 2-cycleengines and could cause damage.

•GASOLINE CONTAINING ALCOHOL-

(High Test, Premium or Gasohol)

Stiffens critical carburetor fuel metering ele- ments and causes engine damage from overheating.

Increases vaporlock.

m Attracts water causing corrosiondamage.