Craftsman 358.351080 - Manual (Page 22)

SERVICE AND ADJUSTMENTS
CHAIN REPLACEMENT (Rg, 36,37,38 & 39)
CAirnON: Wear protective gloves when
handling chain. The chain is sharp and can cut
you even when it is not moving.
It Is nonnal for a new chain to stretch. Because
of this initial stretch during the first 15-30
minutes of operation you should recheck your
chain tension freqti«ri% aid adjust the chain
tension as required. See chain tension sectkxi.
• Move on/stop switch to the “Stop” position.
• Replace ttte old chain vrtien it becomes worn or dafnaged.
• use only the Low-Kidd)ack replacement chain specified in the
repar parte list or as specified on the replacement bar and
chan decal located on the chain saw.
• your Sears Service Center to r^ace and sharpen itKfl-
vldua! cutters for matcWng your chain.
• Loosen and remove the 2 bar damp nuts.
• Remove bar damp.
• R©nove the old diain. .
• Turn acfustir^ screw hand oounterdodcwise until acjusting
pmust touches the stop.
• Slide guide bar behirfo dutch drum urrtil gukte bar stops
a^nst dutch drum sprodiet.
• remove new chain from package. HdcJ chain vwtti the
cmvB (inks as shown in Foute 37.
• Place diain over and berand the dutdi.
• Rt tottom of drive links between teefo in sprocket nose.
• Frt chain drive links rito top of guide bar. Rgure 38.
• 9^1^ bar forward untii chain is snug in guide bar grooves.
• Now, instdi bar damp making sure the adfusling pin is posi-
toned in the lower hole in foe guide bar.
Rgure 37
Install bar clamp nuts and linger tighten only. Do not tighten
any further at this point
Now proceed to the 'Chain Adjustmaif secfion.
CRUroMBW
'Í I Bar Ciamp Nuts
F^ure 39
■ Rdl chain around guide bar to ensure kinks cfo not ewst
(rotates fredy}.
• Assure bar damp nds are loosened (fir^r light).
• Turn adjusfing screw dockwse until chain jist barely touches
foe bottom of guide bar.
• Roil diain around guide bar to ensure all links are in bar groove.
Figure 40
Lift up tip of guide bar to check for sag, release tip of guide bar,
then turn adjusting screw 1/4 turn dockvwse. Repeat fois step
until a sag does not exist
While lifting tip of guide bar. tighten bar damp nuts with foe bar
tool (provided). Torque tO-IStt-lbs.
Adjusting Screw
T/4 Turn
Figure 41
To check chain tension
• Use foe styewdiwer end of foe bar tool to move chain around
foe guide bar (Rgure 43).
• If d^n does not rotate, it is too tight - siighUy loosen bar
clamp nuts and turn adjusting screw 1/4 turn counterdock-
wise. Retighten bar damp nuts.
If chain is too loose, ft will sag beiow the pjíde bar (F^ure 42).
ft
Sag
JT2
kSKS;
-22
Fgure 42