Service Manual

325/328 Excavator
Operation and Maintenance Manual 80
SPARK ARRESTER SILENCER
Cleaning Procedure
See the SERVICE SCHEDULE for the correct service
interval. (See SERVICE SCHEDULE on Page 59.)
Do not operate the excavator with a defective exhaust
system.
IMPORTANT
This excavator is factory equipped with an approved
spark arrester silencer. It is necessary to do
maintenance on this spark arrestor muffler to keep it
in working condition. The spark arrester silencer
must be serviced by dumping the spark chamber
every 100 hours of operation.
If this machine is operated on flammable forest, brush
or grass covered land, it must be equipped with a
spark arrester attached to the exhaust system and
maintained in working order.
Check local laws for spark arrester requirements.
I-2061-0195
WARNING
When the engine is running during service, the
steering columns must be in neutral.
Failure to do so can cause injury or death.
W-2203-0595
Stop the engine. Open the tailgate.
Figure PM-40
Remove the plug (Item 1) [Figure PM-40] from the
bottom of the silencer.
Start the engine and run for about 10 seconds while a
second person, wearing safety glasses, holds a piece of
wood over the outlet of the silencer. The carbon deposits
will be forced out of the silencer plug hole (Item 1)
[Figure PM-40].
Stop the engine. Install and tighten the plug.
Close the tailgate.
P-49437
1