Fuel System - Husqvarna K770 SmartGuard Workshop Manual

the rubber seal on the air duct cover is not damaged.
Make sure that the rubber seal is correctly attached in
the cylinder cover.
The service filter prevents dirt in the engine. The service
filter must only be replaced when damaged.
The paper filter must not be cleaned. It must be replaced
when necessary. The material to be cut and if the dust
from the cutting is wet or dry controls how frequent.
Replace the filter when the power of the product starts to
decrease.
1453 - 001 - 02.04.2020
Note: Be careful when the filter is removed. No dust
particles fall down in the carburetor inlet. Removal of
waste is best done with a vacuum cleaner.
Note: Make sure the inlet pipes are not damaged and
that it has a tight seal to the filter and the carburetor.
Dust in the inlet pipes is a sign of dangerous faults in the
filter system. They must be repaired before the product
is operated.

6.5 Fuel system

6.5.1 To remove the fuel filter
To remove the fuel filter, use Husqvarna hose catcher.
Servicing tools overview on page 11 .
Refer to
1. Remove the fuel tank cap.
2. Catch the fuel hose with Husqvarna hose catcher
and pull out the fuel filter.
3. Move back the metal weight and remove the fuel
hose.
6.5.2 To examine the fuel filter
1. Examine the filter, make sure it is not damaged.
2. If the filter is very dirty, it can be because of dirty
fuel. If necessary, drain the fuel and filter it before
using it in the product.
Note: Dirty filters must not be cleaned but replaced with
a new one.
Repair and servicing - 31