User manual

Power Pruner
TM
oPeraTor's Manual
25
1. Remove mufer cover (A).
2. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from
entering cylinder.
3. Remove spark arrestor screen (B), gasket (C), and exhaust guide
(D) from mufer body.
4. Clean carbon deposits from mufer components.
NOTE
When cleaning carbon deposit, be careful not to damage the cata-
lytic element inside mufer.
5. Replace screen if it is cracked, plugged or has holes burned
through.
6. Assemble components in reverse order.
A
B
C
D
Exhaust Port Cleaning
Level 2.
Parts Required: As needed: Heat Shield
1. Remove spark plug lead from spark plug, and remove mufer
cover.
2. Place piston at top dead center. Remove mufer (A), heat shield
(B), and eyeplate (C).
3. Use a wood or plastic scraping tool to clean deposits from cylinder
exhaust port.
IMPORTANT
Never use a metal tool to scrape carbon from the exhaust port.
Do not scratch the cylinder or piston when cleaning the exhaust
port. Do not allow carbon particles to enter the cylinder.
4. Inspect heat shield, and replace if damaged.
5. Install heat shield, mufer, and eyeplate.
6. Tighten mufer mounting bolts (or nuts) to 53-70 in•lbf
(60-80 kgf•cm).
7. Install mufer cover and attach spark plug lead.
8. Start engine, and warm to operating temperature.
9. Stop engine, and re-tighten mounting bolts (or nuts) to specica-
tions.
B
A
C