Echo CS-341

21
Exhaust Port Cleaning
Level 2.
Parts Required: As needed: Mufer Gasket
1. Remove spark plug lead.
2. Remove mufer cover screws and remove mufer cover.
3. Place piston at top dead center.
4. Remove mufer bolts (A), eyeplate (B), mufer (C), and mufer
gasket (D). Check parts for wear or damage, and replace if neces-
sary.
5. Use a wood or plastic scraping tool to clean deposits from cylinder
exhaust ports (E).
6. Install mufer gasket (D), mufer (C), eyeplate (B), and mufer
bolts (A). Tighten bolts to 60-70 kgf • cm (50-60 in • lbf).
7. Connect spark plug lead.
8. Start engine, and allow unit to warm up at idle for several minutes.
9. Stop engine, and re-tighten bolts to to 60-70 kgf • cm (50-60 in •
lbf).
10. Install mufer cover and tighten screws.
11. Start engine and check for exhaust leaks between mufer and cyl-
inder head. Stop engine if leak is found and correct problem before
operating chain saw.
A
B
C
D
E