Homelite UT34010 - Manual (Page 28)

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Use a Flat File and a Depth Gauge Jointer to lower all
gauges uniformly. Depth gauge jointers are available in
.020 in. to .035 in. (0.5 mm to 0.9 mm). Use a .025 in.
(0.6 mm) depth gauge jointer. After lowering each
depth gauge, restore original shape by rounding the
front. Be careful not to damage adjoining drive links
with the edge of the file.
See Figures 39 and 40.
Depth gauges must be adjusted with the flat file in the
same direction the adjoining cutter was filed with the
round file. Use care not to contact cutter face with flat
file when adjusting depth gauges.
GUIDE BAR MAINTENANCE
See Figure 41.
When the guide bar shows signs of wear, reverse it
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 re-
placed.
■ Wear inside the bar rails which permits the chain to
lay over sideways.
■ Bent guide bar.
■ Cracked or broken rails.
■ Spread rails.
In addition, guide bars with a sprocket at their tip must
be lubricated weekly with a grease syringe to extend
the guide bar life. Using a grease syringe, lubricate
weekly in the lubricating hole.
See Figure x.
Turn the guide bar and check that the lubrication holes
and chain groove are free from impurities.
REVERSING THE GUIDE BAR
See Figures 41, 42, and 43.
1. Remove the SAFE-T-TIP® mounting screw.
2. Remove the SAFE-T-TIP® from the bar.
3. Remove the chain from the bar and turn the bar
over.
NOTE: Bottom of bar should not be on top.
4. Replace the chain on the bar. Refer to “Assembling
the Bar and Chain” earlier in this manual for spe-
cific information.
5. Replace the SAFE-T-TIP® on the bar nose.
NOTE: The locking tab fits in the recessed hole in
the bar.
6. Tighten the screw with your finger.
7. From the finger-tight position, tighten the screw an
additional 3/4 of a turn using a wrench.
RESTORE ORIGINAL
SHAPE BY ROUNDING
THE FRONT
FLAT FILE
DEPTH GAUGE JOINTER
Fig. 39
Fig. 41
LUBRICATING HOLE
Fig. 40
MAINTENANCE