20
MUFFLER SPARK ARRESTOR
IMPORTANT
Carbon deposits in mufer will cause a drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
1. Remove air lter cover and remove spark plug lead.
2. Remove two guide bar nuts and remove sprocket guard.
3. Remove three mufer cover screws and remove mufer cover.
4. Remove spark arrestor screen cover, gaskets, and screen from
mufer body.
5. Clean carbon deposits from mufer components.
NOTE
When cleaning carbon deposit, be careful not to damage the cata-
lytic element inside mufer.
6. Replace screen if it is cracked, plugged, or has holes burned
through.
7. Assemble components in reverse order.
Exhaust Port Cleaning
Level 2.
Tools required: 4 mm Hex Wrench., Wood or plastic scraper
Parts Required: As needed: Mufer Gasket
1. Remove air lter cover and remove spark plug lead.
2. Loosen chain tension, release chain brake, and remove two guide
bar nuts, clutch cover, guide bar, and chain.
3. Remove mufer cover screws and remove mufer cover. (See
“Guide Bar and Saw Chain – Install/Remove” in Instruction Manual
for detailed disassembly instructions.)
NOTE
Some units may have a metal shim (A) between the mufer cover
and clutch cover. Make sure shim is installed properly when reas-
sembling parts.
4. Place piston at top dead center.
5. Remove mufer nuts (B), washer sets (C), eyeplate (D), mufer
(E), and mufer gasket (F). Check parts for wear or damage, and
replace if necessary.
A
B
C
D
E
F
