Craftsman 358.341250 Instruction Manual page 12

NOTE:It is normalfor a smallamount
of oil to appearunderthe sawafter
motorstops,Do not confusethis with
a leakingoiltank..
o TriggerSwitch- Ensurethetrigger
switchfunctionsproperly by squeez-
ingandholding thee t riggerswitch°
Makesuremotorstartsandstops.
o OilTank- Discontinue useof chain
sawif oiltankshowssignsof damage
or leaks.
• PowerCord- Discontinue useif
chainsawpowercordshowssignsof
damageor wear.
CHECKFORLOOSE
FASTENERS AND PARTS
• Bar Mounting Nuts
, Chain
° BarAdjusting Screw
CHECKCHAINTENSION
,_ WARNING: Wear protective
gloves when handti:ng chain, The
chain is sharp and can cut you even
when it is not moving.
Chain tension is very importanL 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.,
! ,, 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,,
3, Loosen bar mounting nuts until
they are finger tight against the bar
clamp,
4, Turn adjusting screw clockwise
until chain solidt}y contacts bottom
of guide bar rail_
5_
.
Using screwdriver, roll chain
around guide bar to ensure all
links are in bar groove.
Lift up the tip of the guide bar to
check for sag, Release tip of
guide bar, then turn adjusting
screw clockwise until sag does not
exist,
7, While lifting tip of guide bar, tighten
bar mounting nuts with a wrench,
8 Use screwdriver to move chain
around guide ban
9o If chain does not rotate, it is too
tight. Slightly loosen bar mounting
nuts and loosen chain by turning
the adjusting screw counterclock-
wise, Retighten bar mounting nuts.
10, If chain is too loose, it will sag be-
low the guide bar, DO NOT oper-
ate the saw if the chain is loose°
WARNING; If the saw is oper-
ated with a loose chain, the chain
could jump off the guide bar and result
in serious injury.,
CHECK CHAIN SHARPNESS
A sharp chain makes wood chips, A
dull chain makes a sawdust powder
and cuts slowly. See CHAIN
SHARPENING in the SERVICE AND
ADJUSTMENTS section.
CHECK GUIDE BAR
Conditions which require guide bar
maintenance:
° Saw cuts to one side or at an angle.
• Saw has to be forced through the cut.,
° 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:
° Disconnect the chain saw from the
power source,
o Loosen and remove bar clamp nuts
and bar clamp, Remove bar and
chain from saw.
o Clean the oil holes and ba r groove af-
ter each 5 hours of operation_
\_._ Remove Sawdust From
de Bar Groove
Sprocket Hole
o_--- Oil Holes •
91
• Add lubricant to sprocket hole after
each use,
° Burring of guide bar rails is a normal
process of rail wear, Remove these
burrs with a flat file,
° When rail top is uneven, use a flat file
to restore square edges and sides,,
12