4-22. REPLACE/INSPECT EXHAUST SILENCER.
This task covers:
Tool Kit, General Mechanics
Make sure engine has cooled down before performing maintenance
on exhaust silencer. Exhaust system is very hot during operation,
and severe burns to personnel could result.
a. Loosen clamp (1) and remove spark arrestor (2).
b. Remove exhaust extension pipe (3) by removing clamp (4).
Remove heat shield (5) by removing six screws (6).
d. Remove two hex head nuts (7), securing exhaust silencer (8) to studs on engine exhaust port
of the engine.
e. Remove two hex head screws (9), securing exhaust silencer bracket to the rear of the engine.
Carefully lift off exhaust silencer (8) and gasket (10) from the studs. Discard gasket.
a. Carefully inspect exhaust silencer (8) for cracks, rust, and pinholes.
b. Replace gasket (10) at reassembly.
a. Place new gasket (10) onto the studs at the engine exhaust port.
b. Carefully position exhaust silencer (8) onto the studs and line up holes in bracket with rear
mounting holes in the engine.
Secure with two hex head nuts (7) onto studs and two hex head screws (9) in mounting holes.
d. Install heat shield (5) using six screws (6).