21
EXHAUST PORT CLEANING
Level 2.
Tools required: Screwdriver, 4 mm Hex Wrench, Wood or plastic scraper
Parts Required: As needed: Muffler Gasket
1. Remove spark plug lead.
2. Remove muffler cover screws and remove muffler cover.
3. Place piston at top dead center.
4. Remove muffler bolts (A), eyeplate (B), muffler (C), and muffler
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 muffler gasket (D), muffler (C), eyeplate (B), and muffler 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 muffler cover and tighten screws.
11. Start engine and check for exhaust leaks between muffler and
cylinder head. Stop engine if leak is found and correct problem
before operating chain saw.
A
B
C
D
E
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