Winter Use; Maintenance Schedule - Husqvarna 343F Operator's Manual

Winter use

Running problems can occur when using the machine in the
cold and snowy conditions caused by:
• Too low engine temperature.
• Icing of the air filter and carburettor.
Special measures are therefore often required:
• Partly mask the air inlet on the starter to increase the
working temperature of the engine.
• Preheat the intake air to the carburettor by using the heat
from the cylinder.
Temperature 0° ° ° ° C (32° ° ° ° F) or colder:
The air filter holder is prepared so it can be changed for use
in the cold. Remove the air filter cover and air filter. Turn the
winter cover anticlockwise using a screwdriver so that the
preheated air from the engine can pass inside the carburettor
compartment and prevent, for example, the air filter from icing
up (see figure).
For temperatures below -5°C and/or in snow conditions there
is also:
• a special cover for the starter housing
• a cover for cylinder cover's air inlet should be fitted as
illustrated.
These reduce the cooling air and prevent large amounts of
snow from being sucked into the engine.
IMPORTANT! If the temperature rises above -5°C or 0°C
respectively the machine MUST be restored to its normal set-
up. Otherwise there is a risk of overheating, which can cause
severe engine damage.
IMPORTANT! Any maintenance other than that described in
this manual must be carried out by your servicing dealer
(retailer).
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MAINTENANCE

Maintenance schedule

Below you will find some general maintenance instructions. If
you need further information please contact your service
workshop.
Daily maintenance
• Check throttle trigger and throttle trigger lockout function.
• Check that the cutting attachment does not rotate at idle.
• Clean the outside of the machine.
• Check that the harness is not damaged.
• Check that the blade guard is not damaged or cracked.
Replace the blade guard if it is exposed to impact or is
cracked.
• Check that the blade is properly centered, sharp and
without cracks.
• Check that the trimmer head is undamaged and not
cracked. Replace the trimmer head if necessary.
• Check that the blade nut is sufficiently tightened.
• Check that the locking nut is tight. Check that the locking
screw is tightened when using a support cup with
bearings.
• Check that the transport guard for the blade is intact and
that it can be secured correctly.
• Check that nuts and screws are tight.
• Check that there are no fuel leaks from the engine, tank or
fuel lines.
Weekly maintenance
• Check the starter, the starter cord and the recoil spring.
• Clean the carburettor area.
• Clean the outside of the spark plug. Remove it and check
the electrode gap. Adjust the gap to 0.5 mm (.20"), or
replace the spark plug. Check that the spark plug is fitted
with a suppressor.
• Clean the cooling fins on the cylinder and check that the
air intake near the starter is not blocked.
• Check that the bevel gear is filled with grease up to 3/4.
Use special grease.
• Clean the air filter.
• Clean or replace the spark arrestor mesh on the muffler
(only applies to mufflers without a catalytic converter).