Echo PPF-280 manual Power PrunerTM 25 Operators Manual, Exhaust Port Cleaning

Power PrunerTM 25 Operator's Manual

1.Remove muffler 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 muffler body.

4.Clean carbon deposits from muffler components.

NOTE

When cleaning carbon deposit, be careful not to damage the cata- lytic element inside muffler.

5.Replace screen if it is cracked, plugged or has holes burned through.

6.Assemble components in reverse order.

A

C B

D

Exhaust Port Cleaning

Level 2.

Parts Required: As needed: Heat Shield

1.Remove spark plug lead from spark plug, and remove muffler cover.

2.Place piston at top dead center. Remove muffler (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, muffler, and eyeplate.

6.Tighten muffler mounting bolts (or nuts) to 53-70 in•lbf (60-80 kgf•cm).

7.Install muffler 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 specifica- tions.

A

B

C