4.Lift up tip of guide bar to check for sag. Release tip of guide bar, then turn ad- justing screw 1/4 turn clockwise. Repeat until sag does not exist.

Adjusting Screw -- 1/4 Turn

5.While lifting tip of guide bar, tighten bar nuts securely with the bar tool.

Bar Nuts

6.Use the screwdriver end of the bar tool to move chain around guide bar.

7.If chain does not rotate, it is too tight. Slightly loosen bar nuts and loosen chain by turning the adjusting screw. Retighten bar nuts.

8.If chain is too loose, it will sag below the guide bar. DO NOT operate the saw if the chain is loose.

NOTE: The chain is tensioned correctly when the weight of the chain does not cause it to sag below the guide bar (with the chain saw sitting in an upright position), but the chain still moves freely around the guide bar.

WARNING: If the saw is operated with a loose chain, the chain could jump off the guide bar and result in serious injury to the op- erator and/or damage the chain making it un- usable. If the chain jumps off the guide bar, in- spect each drive link for damage. Damaged chain must be repaired or replaced.

OPERATION

KNOW YOUR CHAIN SAW

READ THIS INSTRUCTION MANUAL AND SAFETY RULES BEFORE OPERATING YOUR CHAIN SAW. Compare the illustrations with your unit to familiarize yourself with the location of the various controls and adjustments. Save this manual for future reference.

 

Chain

Front Hand Guard

 

Front Handle

 

 

 

 

Starter Rope

Adjustment Tool

 

 

 

 

(Bar Tool)

 

 

 

 

ON/STOP

 

 

 

 

 

 

 

 

 

 

 

 

Switch Choke/

 

 

Chain

Muffler

 

 

 

Fast Idle

 

 

 

 

 

Lever

 

 

 

 

 

 

 

Bar

 

Bar Oil Fill Cap

 

 

 

 

Sprocket

 

 

 

 

 

 

Hole

 

 

Starter Housing

Fuel Mix Fill Cap

Primer Bulb

 

 

 

 

 

 

 

Cylinder Cover

 

Chain

 

 

 

 

 

 

 

 

 

 

Throttle

 

 

 

Brake

 

Chain

 

 

 

 

 

 

Rear

Lockout

 

 

 

 

 

Direction

 

 

 

 

 

 

of Travel

Handle

 

 

Adjusting Screw

 

 

 

 

 

 

 

 

 

 

 

 

Chain

 

Guide Bar

 

 

 

 

 

 

 

Throttle

 

 

Catcher

 

 

Trigger

Clutch Cover

Bar Nuts

 

 

 

 

ON/STOP SWITCH

 

THROTTLE TRIGGER

The ON/STOP SWITCH is used to stop the

The THROTTLE TRIGGER controls engine

engine.

 

 

speed.

 

 

8

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McCulloch 115377027, 966625301, MC4218AV instruction manual Operation, Know Your Chain SAW, ON/STOP Switch Throttle Trigger