Check Chain Tension - Craftsman C944.417341 Instruction Manual

S Trigger Switch - - Ensure the trigger
switch functions properly by squeez-
ing and holding the trigger switch.
Make sure motor starts and stops.
S Oil Tank - - Discontinue use of chain
saw if oil tank shows signs of dam-
age or leaks.
S Power Cord - - Discontinue use if
chain saw power cord shows signs
of damage or wear.
CHECK FOR LOOSE
FASTENERS AND PARTS
S Bar Mounting Nut
S Chain
S Bar Adjusting Screw

CHECK CHAIN TENSION

WARNING:
Wear protective
gloves when handling chain. The
chain is sharp and can cut you even
when it is not moving.
Chain tension is very important. Chain
stretches during use. This is especially
true during the first few times you use
your saw. Always check chain tension
each time you use your saw.
1. Unplug unit from the power source.
2. Use a screwdriver to move chain
around guide bar to ensure kinks
do not exist. The chain should ro-
tate freely.
NOTE: It is recommended that the saw
be turned upside down for chain
tensioning.
3. Loosen bar mounting nuts until
they are finger tight.
4. Turn the adjusting screw clockwise
until the chain solidly contacts bot-
tom of guide bar rail. Then, turn ad-
justing screw an additional 1/4 turn.
Adjusting Screw -- 1/4 Turn
NOTE: To tighten the chain, turn the
adjusting screw clockwise; to loosen
the chain, turn the adjusting screw
counterclockwise.
Adjusting Screw
5. Check the tension by lifting the
chain from the guide bar. Remove
some of the stiffness in the chain
by pulling down and letting go of
the chain several times.
6. Continue turning the adjusting
screw until the tension is correct.
7. Tighten bar mounting nuts with a
wrench.
8. Recheck chain tension.
WARNING:
If the saw is operated
with a loose chain, the chain could
jump off the guide bar and result in se-
rious injury.
CHECK CHAIN SHARPNESS
A sharp chain makes wood chips. A
dull chain makes a sawdust powder
and cuts slowly. See
in the
SHARPENING
section.
ADJUSTMENTS
CHECK GUIDE BAR
Conditions which require guide bar
maintenance:
S Saw cuts to one side or at an angle.
S Saw has to be forced through the
cut.
S Inadequate supply of oil to the bar
and chain.
Check the condition of the guide bar
each time the chain is sharpened. A
worn guide bar will damage the chain
and make cutting difficult.
After each use, with unit disconnected
from power source, clean all sawdust
from the guide bar and sprocket hole.
To maintain guide bar:
S Disconnect the chain saw from the
power source.
S Loosen and remove bar mounting
nuts. Remove bar, bar clamp plate
and chain from saw.
S Clean the oil holes and bar groove
after each 5 hours of operation.
Remove Sawdust From
Oil Holes
13
CHAIN
SERVICE AND
Guide Bar Groove