MAINTENANCE
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•Remove the muffler shield (C), cover (D) and diffuser (E).
•Remove the muffler body screw (F) and muffler body (G).
•Clean and inspect the spark arrester screen (A).
•Reassemble components in reversed order of removal and torque the screw to 45 in/lbs (4.9 Nm) and the muffler nuts to 70 in/lbs (7.9 Nm).
WARNING: If the spark arrester screen is damaged, faulty or deteriorated, replace the muffler body or entire muffler assembly.
The Spark Arrester System needs a periodic and accurate maintenance and cleaning, in particular:
-check periodically the spark arrester screen and substitute it when holes, bends or deformations appear;
-check carefully if dust, debris or organic material is in contact
with parts of the Spark Arrester System; check especially the gap between the muffler and the shield; clean it often with tools or shop air.
In this chainsaw the spark arrester screen is integral part of the inner half of the muffler body; if the screen needs to be replaced, please order the whole inner part p.n. 50050204A (G, Fig. 95 page 33).
One spiked bumper p.n. 50062023 (Fig. 96) can to be mounted, as provided on the chainsaw in the box.
WARNING: Do not operate your chainsaw if the muffler is damaged, missing or modified. An improperly maintained muffler will increase the risk of fire and hearing loss.
Chain Brake
If the chain brake does not work properly, remove the clutch cover and clean the chain brake components. Check for wear on the brake band (A, Fig. 97) and replace if worn or deformed.
WARNING: If the brake band is worn too thin it may break when the chain brake is triggered. With a broken brake band, the chain brake will not stop the chain. The chain brake should be replaced by an authorized service dealer if any part is worn to less than 0.02” (0.6 mm) thick. Repairs on a chain brake should be made by an authorized service dealer.Take your unit to the place of purchase if purchased from a servicing dealer, or to the nearest authorized service dealer.
Always keep the chain brake mechanism clean and lightly lubricate the linkage (B, Fig. 98).
Always test the chain brake performance after servicing or cleaning per the Operation - Chain Brake Section.
WARNING: Check and, if damaged, replace the chain catcher / safety stop (C, Fig. 97).
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