McCulloch Mac 110 - Guide Bar Maintenance; Lubrication of Sprocket Tip

Do not turn the adjustm~nt screw more than 1/4 ~urn at a
time. Check oil flow after each adjustment. When more oil is
needed for short periods, it is better to use the R1ahual oiler-
as a supplement and make no adjustment to the automatic
oiler screw.
GUIDE BAR MAINTENANCE
Bar wear: Turn bar over frequently (at regular intervals) to
ensure even wear on top and bottom of bar.
Bar groove: Bar groove should be cleaned every time chain
is removed. Run depth gauge tang or similarly sized instru-
ment along the groove until all residue is cleared. ®
Oil Passages: Oil passages at base of bar should be cleaned
periodically to ensure proper lubrication of chain and bar
groove. This can be done with depth gauge tang or any
instrument small enough to insert into passages. @
NOTE: New McCulloch depth gauges are designed with a
tang which is ideally suited for cleaning bar groove and oil
passages.
The condition of the oil passages should be checked before
each use of the saw. While running the saw, press manual
oiler button a few times. If passages are clear, the chain
will give off a spray of oil.
Lubrication of Sprocket Tip: For most non-professional usage
the sprocket tip will not require lubrication. However, lubrica-
tion is necessary for professional usage and under the follow-
ing circumstances:
1. Continuous cutting of dry or highly abrasive wood.
2. Continuous boring cuts.
3. Continuous cutting with the bar tip.
4. Continuous cutting in wet or snowy conditions.
Under these circumstances lubricati.on is recommended after ') : .
one hour of hard usage or after three (3) tanks of gas are ' ,
consumed.
NOTE: Thoroughly clean bar tip before lubrication.
Three methods of lubrication for the sprocket tip may be used:
1. Needle Nose Grease Gun: Clean lubrication hole. Using a
general purpose chassis lubricant of No. 1 consistency,
force grease into lubrication hole on one side of bar while
covering the lubrication hole on the other side. Rotate
sprocket and apply grease until it appears at edge of
sprocket. Repeat on other side of bar. @
NOTE: Lubri-Gun, piN 68090, is recommended by
McCulloch Corporation for applying grease to sprocket tip.
Its small nozzle is necessary for efficient application of
grease to sprocket tip.
2. Oil Can: Squirt the appropriate weight motor oil (SAE 10 in
cold weather, SAE 30 in hot weather) into lubrication hole
while turning sprocket. Repeat on other side of bar.
3. Oil Soak: Fill a small container with clean oil and sub-
merge bar tip in oil. Rotate sprocket several revolutions.
Bar tip may be submerged overnight for maximum
lubrication.
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