McCulloch PRO MAC 610 - Automatic Chain Oiler; Muffler and Exhaust Port

AUTOMATIC CHAIN OILER
To remove the muffler:
The automatic chain oiler may be adjusted to increase or
reduce the oil output volume. To adjust this volume, proceed
as follows:
1. Remove the air cleaner cover.
2. Turn the adjustment screw out (to increase) or in (to
decrease) oil output. Do not turn the screw more than a
fraction of a turn at a time because the oil output is
sensitive to small adjustments.®
MUFFLER AND EXHAUST PORT
Operating the saw with a dirty or faulty muffler can lead to
damage of the engine. Never run the engine without a muffler.
Periodically it is advisable to remove, clean and inspect the
muffler. At the same time, any carbon should be removed
from the exhaust port. It is also recommended that the spark
arrester screen be inspected daily and replaced if wear or
corrosion is observed.
WARNING: Always ensure that the saw is cool before mainte-
nance is performed on the muffler.
To remove the spark arrester screen
For models having the chamber type muffler, remove the
CHAIN BRAKE and two screws that hold the cover to the
chamber. ®
For models not having the chamber type muffler, remove the
CHAIN BRAKE and two screws that hold the muffler outlet and
deflector plate to the muffler. ®
1. Remove the bottom shroud from the saw.®
2. Remove the muffler. 2
3. Clean away all carbon deposits with a scraper blade, wire
brush, or by washing with a clean solvent. Replace any
broken or damaged element. Be sire to follow solvent
manufacturer's instructions.
4. While the muffler and spark arrester are removed from the
saw, examine the exhaust port for evidence of carbon
around the port. Clean the port as follows:
A. Pull the starter rope slowly until the piston covers the
port completely.®
B. Use a wooden scraper and clean in and around the port.
Do not use any metal or sharp-edged tool that might slip
and scratch the piston or rings. ®
C. After cleaning, turn the saw exhaust side down and
blow loose particles away with compressed air.
WARNING: Wear eye protection during this operation.
5. Replace the muffler (ensuring the exhaust side gasket is
intact) and the bottom shroud.
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