Check C Hain Tension - Poulan Pro 1420 Instruction Manual

• OilTank - Discontinue useof chain
sawifoiltank shows s igns o fdamage
orleaks.
• Power Cord - Discontinue useifchain
sawpower cord shows s igns ofdam-
ageorwear.
CHECK F OR LOOSE
FASTENERS ANDPARTS
• Bar Mounting Nut
• Chain
• Bar Adjusting Screw
CHECK C HAIN 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 rotate
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 counter-
clockwise.
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 on the chain several times.
12
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
offthe guide bar and result in serious in-
jury.
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.
• Loosen and remove bar mounting
nuts. Remove bar, bar clamp plate
and chain from saw.
• Clean the oil holes and bar groove af-
ter each 5 hours of operation.
Remove Sawdust From
e Bar Groove
Oil Holes o_"._
• 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.