Replacing The Chain Catcher; Dismantling The Start/Stop Control - Husqvarna TrioBrake 550XPG Workshop Manual

Safety equipment
6.6 Assembling the muffler
1
If the saw is fitted with a spark arrestor mesh, put
it in place first. When fitting the mesh, make sure
that the mesh is inserted in the right position. If
necessary, use the combination spanner to insert
the mesh.
2
Fit the:
• cooling fin
• gasket
• muffler (cylinder screw), tightening torque of 19
Nm.
• muffler (crankcase screw), tightening torque of
14-16 Nm.
• Cylinder cover
3
Warm up the saw for at least one minute and
retighten the mufflers cylinder screws to 17 Nm.

6.7 Replacing the chain catcher

A worn chain catcher must always be replaced with
a new one. Always use original spare parts.
1
Release the brake by moving the front hand guard
backward.
Loosen the bar nuts and remove the clutch cover,
chain and bar.
2
Remove the chain catcher and replace it with a
new one.
Make sure that the vibration element is fitted cor-
rectly on the crankcase when a new chain catcher
is screwed in place. See figure 13.

6.8 Dismantling the start/stop control

1
Remove the cylinder cover and air filter. Dismantle
the air filter holder. See the "Dismantling the carbu-
rettor" chapter.
2
Loosen screw B and dismantle the stop control A.
See figure 14. Unhook the rubber collar around the
control from the guide plugs.
Cleaning and inspection
Clean and check carefully all components. Parts
must be replaced if cracked or show signs of other
defects. Always use original spare parts.
24
- English
Fig 13
Fig 14