Husqvarna 1153183-95 Checking, maintaining and servicing chain saw safety equipment, Maintenance

MAINTENANCE

High speed jet H

This chain saw is equipped with a carburettor that has a built-in fixed high speed jet.

CAUTION! There is an integrated speed governor in the ignition that limits the maximum speed to 12,000 rpm. Adjusting the jet therefore has no effect on the maximum speed. The high speed jet affects the chain saw’s power.

For optimum setting of the carburetor, contact a qualified servicing dealer who has a rpm counter at his disposal.

CAUTION! Setting the high speed jet too lean reduces the engine’s power and causes overheating. This results in engine damage.

Correctly adjusted carburetor

When the carburetor is correctly adjusted the machine accelerates without hesitation and the machine 4-cycles a little at maximum speed. It is also important that the chain does not rotate at idle. If the L-jet is set too lean it may cause starting difficulties and poor acceleration. If the H-jet is set too lean the machine will have less power, poor acceleration and could suffer damage to the engine. If the L and H-jets are set too rich it will lead to acceleration problems or too low a working speed.

Checking, maintaining and servicing chain saw safety equipment

Note! All servicing and repair work on the machine requires special training. This is especially true of the machine′s safety equipment. If your machine fails any of the checks described below we recommend you to contact our servicing dealer.

Chain brake and front hand guard

Checking brake band wear

Brush off any wood dust, resin and dirt from the chain brake and clutch drum. Dirt and wear can impair operation of the brake.

Regularly check that the brake band is at least 0.024 inch (0.6 mm) thick at its thinnest point.

Checking the front hand guard

Make sure the front hand guard is not damaged and that there are no visible defects such as cracks.

Move the front hand guard forwards and back to make sure it moves freely and that it is securely anchored to the clutch cover.

Checking the inertia brake release

With the engine turned off, hold the chain saw over a stump or other firm object. Let go of the front handle so that the bar drops towards the stump as the chain saw rotates around the rear handle.

When the bar hits the stump the brake should be applied.

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