Position the outer section properly, with the spacers be-
tween the cutters on the chain. Tap it into place.
The Adjusting Knobs
To install the adjusting knobs, first place a fiber washer,
then a metal washer onto the adjusting knob shaft.
Slide a fiber washer between the two D-8 sections, using
the ball driver to line up the holes.
Fig. 4. Use the ball-driver to position the fiber washer.
Insert the adjusting knob shaft through the hole and push
it
out the opposite side.
Now push the adjusting knob shaft back through so that it
is flush with the guide bar.
Slip a fiber washer between the inner and outer sections of
the D-8, again using the ball-driver to align the holes. Push
the adjusting knob shaft through all the way.
Slide a metal washer, then a fiber washer onto the adjust-
i
ng knob shaft, then thread on the other adjusting knob.
Chain Tensioning
Slide the D-8 back all the way to the guard/deflector and
check the chain tension. If the chain needs tensioning,
l
oosen the bar nuts and the adjusting knobs. Adjust the
chain tension as needed, using the ball driver.
Fig. 5. Use the ball-driver to tension the chain.
OPERATION & MAINTENANCE
/
15
Retighten the bar nuts, then slide the D-8 out to its full
extension.
Your Cutters Edge Ventilation Saw with the D-8 Guard/
Depth Gauge installed is now ready for use.
NOTE
For detailed instructions on the uses and
applications of ventilation saws, please refer to
your Cutters Edge Ventilation Saw Operations
and Maintenance Manual. Further instructions on
inspection cuts (below) are on page 12.
Operation of the D-8
You can now adjust the D-8 to various depths of cut. If the
saw is running, first set the saw's chain brake. Then twist
the adjusting knobs to loosen them. Slide back the outer
section of the D-8 to the desired setting on the depth scale.
Retighten the adjusting knobs and release the chain brake.
You are ready to cut.
Fig. 6. Set the D-8 to the necessary depth.
NOTE
Since the D-8 completely covers the cutting chain
when it is fully extended, you can now start your
saw on the ground and then carry it up to the roof
while it is running. This eliminates the need to re-
start the saw after you are in position on the roof.
Inspection Cut
On the roof, first make an inspection cut to determine the
thickness of your roofing materials. Slide back the D-8 to
its fully retracted position, then make the inspection cut as
you normally would, keeping the saw at ninety degrees to
the rafter, feeling for and rolling the rafter.
Set your chain brake. Visually determine the thickness of
the roofing materials and then adjust the D-8 to the
necessary setting.
Release the chain brake and make
your ventilation cuts.
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General