SAW CHAroN Tension Adjustment

WARNmNG: Ak,vays use protective gloveswhen handling

the saw chain_

Proper tension of saw chain is extremely important and must be checked before starting, as well as during any cutting operation,

Taking the time to make needed adjustments to the saw chain will result in improved cutting performance and pro- longed chain life.

To adjust the saw chain:

1, Loosen the bar retaining nut(s) (B, Fig. 27). Hold nose of guide bar up and turn adJustment screw (D)

CLOCKWISE to increase chain tension, Turning screw COUNTERCLOCKWISE will decrease amount of ten-

sion on chain, Ensure the chain fits snugly all the way around the guide bar (Fig. 28),

Fig. 28

2, After making adjustment, and while still holding nose of bar in the uppermost position, tighten the bar retaining nuts securely. Chain has proper tension when it has a snug fit all around and can be pulled around by gloved hand,

NOTE: If chain is difficult to rotate on guide bar or if it binds, too much tension has been applied, This requires minor adjustment as follows:

A.Loosen the bar retaining nuts so they are hand tight. Decrease tension by turning the bar adjustment screw COUNTERCLOCKWISE slowly. Move chain back and forth on bar. Continue to adjust until chain rotates freely, but fits snugly. Increase tension by turning bar adjustment screw CLOCKWISE,

B, When saw chain has proper tension, hold nose of bar in uppermost position and tighten the bar retaining nuts securely.

future adjustments will lengthen quickly.

If saw chain is TOO LOOSE oF TOO

TIGHT, the sprocket, bar, chain, and crank- shaft bearings will wear more rapidly. Study Fig. 29 for information concerning correct cold tension (A), correct warm tension (B), and as a guide for when saw chain needs adjustment (C).

CHAIN BRAKE MECHANICAL TEST

WARNING:

ated carelessly,

Your chain saw is equipped with a Chain Brake@ that reduces possibility of injury due to kickback. The brake is activated if pressure is applied against brake lever when, as in the event of kickback, operator's hand strikes the lever, When the brake is activated, chain movement stops abruptly.

To Test the Chain Brake(e:

1, The Chain Brake@ is DISENGAGED (chain can move) when BRAKE LEVER IS PULLED BACK AND

LOCKED (A, Fig. 30),

2, The Chain Braked@is ENGAGED (chain is stopped) when brake lever is in forward position. You should not be able to move chain (B, Fig. 30).

Fig. 30

Fig. 29	17

316.35084 specifications

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