Chain Tension - Craftsman 358.34160 Operator's Manual

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D. CHAIN TtNSi0N
* Chain tension Is very important:
--A loose chain will wear the bar and itself.
--A loose chain can jump offthe bar while you are
cutting
-- A tight chain can damage the saw andlor break.
e The chain stretches dudng use, especlallywhen
new. Check tension:
-- each time the saw is'used
-- more frequently when the chain is new
--as' the chain warms up to normal operating
temperature.
_WARNING
Avoid accidental starting. Always unplug the saw
from the power source before adjusting chain
tension.
• Chain tensioning procedure:
NOTE: The bardamp nutsmustbeno morethanfinger
tighttotensionthe chaincorrectly.
1. Hold the tip ofthe Guide Bar up and turn the Adjust-
. ing Screwclockwise just untilthe chain does not sag
beneath the Guide Bar.Figure 13.
.-
NOTE: Totighten tension, turnthe adjusting screw
clockwise _ .Toloosentension,turn the adjust-
ing screw counterclockwise_.
2. Check the tension by liftingthechain from the Guide
Bar at the center of the bar. Figure 14.
3. Continue turning the AdjustingScrew until the ten-
sion is correct.
4. Hold the tip ofthe Guide Bar up and tighten the Bar
Clamp Nuts with a wrench.
5. Recheck tension.
E' BAR ANDCHAIN OIL
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• Chain tension is correct when the chain:
--can be lifted about 118"from the Guide Bar at a
point near the middle of the bar, and
--will move freely around the bar.
Figure 13
CHAIN, CAN BE t
Figure 14 ....
i i i [ i i ii
• The guide bar and cutting chain require con-
tinuous lubrication in order to remain in operating
condition.
--- Lack of oil will quickly ruin the bar and chain.
-- Too little oil will cause overheating shown by
smoke comingfrom thechain and/or discoloration
of the guide bar rails.
• Use Sears Bar and Chain Lubricant #71-36554 to
fill the oil tank. Clean SAE 30W oil may also be
-used. Never use waste oi/for this purpose.
1. IMPORTANT POINTS
a. RI! the oil tank every time you use the saw.
See "Specifications" for oil cap location.
b. Wipe off surfaces be_reflliing with oil toavoid
sawdust ordebrisaccidentally fallingintothetank
•and causing damage.
c. Use a funnel to fill the tank and wipe up all
spills. Do notuse the saw until itiswiped clean
and is completely dry from spilled oil.
d. Replace the oil cap securely to ensure pro-
per operation of the oiler.
e. Check the otl level indicator frequentJydur-
ing use. Locate the indicator in the saw frame
just below and behindthe front handte. Figure
15. If oil is not visible in the slot when saw is
upright on a level surface, the tank requires
filling.
f. Let saw stand unplugged for 15 minutes
before storing, It isnormal fora small amount
of oil todripoff the bar and chain when the saw
is not {n use. The excess oil should be wiped
from the saw before storing.
2. USING THE MANUAL OILER
Yoursaw isequipped with an oiler activatorwhich
manually supplies oil to the bar and chain.
The oiler activator must be used regularly and-
often enough to maintain a thin film of oil on the
bar and chatn whlle the saw Is cutting. It is
recommended that the oiler activator be
operated six {6) times a minute and held for
approximately three (3) seconds each time It
is pressed.
a. Operate the oiler bypressingdown onthe oiler
activator with your right thumb. Figure 15.
b. Be surethat you continuetogrip handlesfirmly
while using the oiler activator.
Figure 15