12 / CUTTERS EDGE VENTILATION SAWS
NOTE
Note that you must depress the safety lock on top
of the handle to he able to pull the trigger (Fig. 14).
The trigger cannot be pulled without depressing
this safety lock.
IMPORTANT
Never adjust the chain while it is hot. If the chain
is adjusted tighter while it is hot, it will shrink as it
cools and can damage the bar. drive sprocket or
chain.
Fig. 14. Throttle lock.
You may stop the saw with the momentary contact switch
or you may continue on to the chain run-in procedure.
RUNNING-IN THE CHAIN
The next step is running-in the chain. This important
procedure pre-stretches and fully lubricates the chain,
preparing it for cutting. This step is especially important
when using a hardnose bar because the higher tempera-
tures associated with the hardnose bar increase chain
stretch.
Start the saw and run it at one-half to three-quarter speed
for approximately three minutes or until the bar and chain
begin to smoke.
Now turn off the saw. The chain has reached its operating
temperature. You will notice that the chain has sagged
(Fig. 15). Before readjusting, allow the chain to cool down
for three to five minutes, or until it is cool enough to touch
without discomfort.
Fig. 15. The chain will sag when hot.
Once it is cool enough to handle, readjust the chain to the
proper tension.
NOTE
Repeat this entire chain adjusting procedure once
more.
Running-in the chain will remove approximately 75% of
chain stretch. However, under normal use the chain will
continue to stretch throughout its life. Re-check the chain
tension during prolonged use and after each use.
BREAKING IN THE ENGINE
Proper breaking-in of
the engine is a crucial step
in the set-up of your saw. This procedure allows
the cylinder to coat with oil and seat the piston a ring
properly. If you skip this procedure and run the
saw at full throttle, severe
damage to the engine
can occur.
NOTE
Even though the chain will not turn at idle and no
bar and chain oil will be pumped, this break-in
procedure must be performed with the bar and
chain installed and with the bar and chain oil tank
filled. Also be sure the chain brake remains disen-
gaged throughout the procedure.
To break in the engine, start the saw and let it idle for a
minimum of ten to fifteen minutes. It is advisable to allow
it to idle through a complete tank of gas. You may use the
saw at this point to cut scrap lumber or for light training, but
remember not to run it at full throttle.
Now your Cutters Edge Ventilation Saw is assembled and
properly prepared for use.
WARNING
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