MAINTENANCE

High speed jet H

The high speed jet H affects the power and speed of the machine. If the high speed jet is set too lean (screwed in too far) it will cause the machine to over- rev and damage the engine. Turn the high speed jet H anticlockwise until it stops. If the engine runs unevenly, turn the high speed jet clockwise until the engine runs evenly.

The high speed jet H is correctly adjusted when the machine burbles slightly. If the machine ”screams”, the setting is too lean. If the muffler emits a lot of smoke and the machine burbles a lot, the setting is too rich. Turn the high speed jet H clockwise to achieve a setting that sounds right.

CAUTION! To adjust the carburetor correctly you should contact a mechanic with access to a rev counter.

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 machines 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 brake trigger

Place the chain saw on firm ground and start it. Make sure the chain does not touch the ground or any other object. See the instructions under the heading Start and stop.

Grasp the chain saw firmly, wrapping your fingers and thumbs around the handles.

Apply full throttle and activate the chain brake by tilting your left wrist forward onto the front hand guard. Do not let go of the front handle. The chain should stop

immediately.

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Husqvarna 1153158-95 manual High speed jet H, Correctly adjusted carburetor

1153158-95 specifications

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