Dismantling The Muffler - Husqvarna 120 Workshop Manual

Safety equipment
NOTE!
After repairing, the chain brake must be in-
spected in line with the instructions below.
Functional inspection:
Do not turn on the engine when carrying out this
inspection.
Guide bar length
12"-18"
• Hold the chain saw over a stable surface. The
distance between the guide bar and the sur-
face is shown in the table above.
• Let go of the front handle and let the chain saw
drop toward the surface underneath.
• When the guide bar hits the surface the chain
brake must trigger.

6.3 Dismantling the muffler

WARNING!
Do not touch the muffler until it
has cooled. Risk of burns.
1
Use a heat gun to loosen the thread lock on the
screws before you unscrew the two screws for the
spike (A). Remove the spike. See figure 12.
2
Release the two nuts (B) and remove the heat
deflector.
3
Remove the spark arrestor mesh (C).
4
Remove the muffler (D),the gasket (E) and the two
screws (F).
Cleaning and inspection
• Clean and check all components carefully. Parts
must be replaced if cracked or show signs of
other defects. Always use original spare parts.
• The spark arrestor mesh is best cleaned with a
wire brush.
• The mesh must be replaced, if damaged. The
chain saw will overheat if the mesh is clogged
resulting in damage to the cylinder and piston.
• Never use a chain saw with a clogged or defec-
tive muffler.
22
- English
Height
45 cm/18"
Fig 11
C
D
B
Fig 12
F
E
A