Problem Possible Cause Solution
Engine starts and
runs, but the chain
is not rotating
Chain brake engaged Release chain break, see Fig. 5.
Chain tension too tight Properly adjust chain tension:
1) Loosen the guide bar nuts (A) slightly, see Fig. 6.
2) Turn the chain tensioning screw (E) counter-clockwise to
loosen chain tension, see Fig 7.
3) Lift the tip of the guide bar up to check for chain sag, see
Fig. 8. Release the tip of the guide bar and turn the chain
tensioning screw (E) 1/2 turn clockwise, see Fig. 7. Repeat
this process until sag does not exist.
4) Hold the tip of the guide bar up and tighten the bar nuts
securely, see Fig. 9.
5) The chain is correctly tensioned when there is no slack on
the underside of the guide bar, the chain is snug, but it can
be turned by hand without binding, see Fig. 10.
Guide bar and chain incorrectly
assembled
Refer to Owner’s Manual for proper installation.
Bar and chain
running hot and
smoking
Bar and chain oil tank empty Fill oil tank with bar and chain oil.
Chain tension too tight Properly adjust chain tension following above instructions.
Oiler not functioning Run at full throttle for 30 seconds. Stop saw and check for oil
dripping from guide bar. If oil is present the chain may be dull
or the guide bar may be damaged. Have chain sharpened or
replace chain and guide bar as needed. If no oil then contact
Servicing Dealer.
Poor cutting perfor-
mance
Chain installed backwards Properly install chain on guide bar. The cutters on the top of
the guide bar should face toward the bar tip, in the direction
of the chain rotation, see Fig. 11. Refer to Owner’s Manual
for proper installation.
Dull or damaged chain Inspect chain for dull or damaged cutters. Have chain sharp-
ened or replaced as needed.
WARNING: Never touch or adjust the chain while the engine is running. The saw chain is
very sharp! Always wear protective gloves when performing maintenance to the chain.
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10
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