Page 29
Fig. 66
MAINTAINING THE GUIDE BAR
See Figure 67.
CAUTION:
Make sure the chain has stopped before you do any
work on the saw.
Every week of use, reverse the guide bar on the saw to
distribute the wear for maximum bar life.
The bar should be cleaned every day of use and checked
for wear and damage.
Feathering or burring of the bar rails is a normal process
of bar wear. Such faults should be smoothed with a file as
soon as they occur.
A bar with any of the following faults should be replaced:
■
Wear inside the bar rails that permits the chain to lay
over sideways
■
Bent guide bar
■
Cracked or broken rails
■
Spread rails
In addition, lubricate guide bars (with a sprocket at their
tip) weekly. Using a grease syringe, lubricate weekly in the
lubricating hole.
Turn the guide bar and check that the lubrication holes and
chain groove are free from impurities.
MAINTAINING THE SAFE-T-TIP
®
NOSE
GUARD
See Figures 68 and 69.
CAUTION:
Make sure the chain has stopped before you do any
work on the saw.
WARNING:
Although the guide bar comes with a SAFE-T-TIP
®
anti-kickback device already installed, you need to
check the tightness of the mounting screw before each
use.
Tighten the mounting screw of the nose guard as in-
structed below. These are specially hardened screws. If
you cannot install the screw tightly, replace both the screw
and the SAFE-T-TIP
®
, before further operation.
Note:
Do not replace the screw with an ordinary screw;
manufacturer's replacement parts should be used when
replacing parts.
In addition to preventing chain contact with solid objects
at the nose of the bar, the SAFE-T-TIP
®
also helps keep
the chain away from abrasive surfaces, such as the
ground. Keep it on the right hand side of the bar where it
will be between the chain and the ground during flush with
ground cutting.
The mounting screw requires a 5/16 in. wrench (or
adjustable wrench) to achieve the recommended tight-
ness of 35 to 45 in. lb. (4-5 Nm). A tightness within this
range can be achieved by using the following method.
1.
Tighten the screw to a finger tight position.
2.
Tighten the screw an additional 3/4 of a turn using a
wrench.
MAINTENANCE
Fig. 67
LUBRICATING HOLE
MOUNTING
SCREW
SAFE-T-TIP
®
Fig. 68
RESTORE ORIGINAL
SHAPE BY ROUNDING
THE FRONT
