Chainsaw User Manual

MUFFLER SPARK ARRESTOR

IMPORTANT

Carbon deposits in mufer 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 mufer cover screws and remove mufer cover.

4. Remove spark arrestor screen cover, gaskets, and screen from

mufer body.

5. Clean carbon deposits from mufer components.

NOTE

When cleaning carbon deposit, be careful not to damage the cata-

lytic element inside mufer.

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: Mufer 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 mufer cover screws and remove mufer 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 mufer cover

and clutch cover. Make sure shim is installed properly when reas-

sembling parts.

4. Place piston at top dead center.

5. Remove mufer nuts (B), washer sets (C), eyeplate (D), mufer

(E), and mufer gasket (F). Check parts for wear or damage, and

replace if necessary.