Manual Husqvarna 450e II (page 32 of 120) (English, Portuguese, Spanish)

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2. Press down the throttle trigger lockout and make

sure that it goes back to its initial position when you

release it. (Fig. 95)

3. Make sure that the throttle trigger is locked at the

idle position when the throttle trigger lockout is

released. (Fig. 96)

4. Start the product and apply full throttle.

5. Release the throttle trigger and make sure that the

saw chain stops and stays stationary.

WARNING: If the saw chain rotates

when the throttle trigger is in the idle

position, speak to your servicing dealer.

To do a check of the chain catcher

1. Make sure that there is no damage on the chain

catcher.

2. Make sure that the chain catcher is stable and

attached to the body of the product. (Fig. 27)

To do a check of the right hand guard

• Make sure that the right hand guard is not damaged

and that there are no defects, such as cracks. (Fig.

28)

To do a check of the vibration damping

system

1. Make sure that there are no cracks or deformation

on the vibration damping units.

2. Make sure that the vibration damping units are

correctly attached to the engine unit and handle unit.

Refer to

Product overview on page 19

for information

about where the vibration damping system is on your

product.

To do a check of the start/stop switch

1. Start the engine.

2. Press the start/stop switch down to the STOP

position. The engine must stop. (Fig. 29)

To do a check of the muffler

WARNING:

Do not use a product that has a

defective muffler or a muffler that is in bad

condition.

WARNING: Do not use a product if the spark

arrestor mesh on the muffler is missing or

defective.

1. Examine the muffler for damages and defects.

2. Make sure that the muffler is correctly attached to

the product. (Fig. 97)

3. If your product has a special spark arrestor mesh,

clean the spark arrestor mesh weekly. (Fig. 98)

4. Replace a damaged spark arrestor mesh.

CAUTION:

If the spark arrestor mesh is

blocked the product becomes too hot and

this causes damage to the cylinder and

piston.

To adjust the idle speed screw (T)

The basic carburetor adjustments are done at the

factory. You can adjust the idle speed but for more

adjustments, refer to your servicing dealer.

To give the components of the engine sufficient

lubrication during run-in, adjust the idle speed. Adjust

the idle speed to the recommended idle speed. Refer to

Technical data on page 37

CAUTION: If the saw chain rotates at idle

speed, turn the idle speed screw

counterclockwise until the saw chain stops.

1. Start the product.

2. Turn the idle speed screw clockwise until the saw

chain starts to rotate.

3. Turn the idle speed screw counterclockwise until the

saw chain stops.

Note: The idle speed is correctly adjusted when the

engine runs correctly in all positions. The idle speed

must also be safely below the speed at which the saw

chain starts to rotate.

WARNING: If the saw chain does not stop

when you turn the idle speed screw, speak

to your servicing dealer. Do not use the

product until it is correctly adjusted.

To examine if the carburetor is correctly

adjusted

• Make sure that the product has the correct

acceleration capacity.

• Make sure that the product 4-cycles a little at full

throttle.

• Make sure that the saw chain does not rotate at idle

speed.

• If the product is not easy to start or has less

acceleration capacity, adjust the low and high speed

needles.

CAUTION:

Incorrect adjustments can

cause damage to the engine.

To replace a broken or worn starter

rope

1. Loosen the screws to the starter housing

2. Remove the starter housing. (Fig. 99)

1286 - 002 - 03.06.2020

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Husqvarna 450e II Manual

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