U.S.SAWS ACH GB-16 Operating Manual page 13

695GC / 695F4 OPERATOR'S MANUAL
STARTING AND STOPPING A CONCRETE CHAIN SAW
WARNING
CAUTION
IMPORTANT
COLD ENGINE STARTING PROCEDURE
1. Pull the choke lever out, which also sets the throttle lock.
All concrete pipe cutting chain saws are considered specialty tools. The overall cutting
2. Depress primer bulb approximately 5-10 times.
speed is slower that some other types of cutting equipment. For this reason the correct
3. Push in decompression valve.
time allocation should be made so that the operator has time to make the cut at a
4. Open the water valve 1/4 turn.
safe pace and not have to force the saw to try and increase production. Forcing the
5. Place the saw on stable ground making sure the chain
saw creates unneeded wear on chains, bars, and drive components. Additionally, long
is free of any obstructions.
periods of exertion can cause operator fatigue which can increase the likelihood of
6. Place foot on the base of the rear handle, and place one hand
on front handle.
injury.
7. With opposite hand, slowly pull starter handle until the
starter pawls engage.
When using the saw in a hand held fashion a slow rocking motion will provide the best
8. Pull the starter cord (hard, fast, short pulls)
cutting action. Alternating pressure from the front of the cut to the rear of the cut offers
until engine initially fires or "pops".
reliable results.
Could be as many as 10-15 pulls.
9. Push the choke lever in.
The saw will cut slower when cutting through rebar and other reinforced materials.
10. Pull the starter cord until engine starts - should be 1 to 2 pulls.
Allow the saw to run at full speed and use light pressure. Pushing hard on the tool only
11. Release the throttle lock by momentarily squeezing on the
increases chain wear and stretching force adding to wear and increasing the cost per
throttle trigger.
cut.
12. When the engine starts, allow the engine to idle briefly.
Squeeze the throttle trigger several times to help
warm up the engine.
When cutting ensure that the water supply is sufficient for the cut being made.
13. Open the water valve completely.
1. Connect all fittings (Air, Hydraulic, Water).
WARM ENGINE STARTING PROCEDURE
2. Turn on power supply.
1. Use the same procedure as starting a cold engine, but pull choke lever out, and then push back in to set
3. Turn on water valve on the saw.
the throttle lock. If choke is used on a warm engine, the carburetor will flood with gas.
4. Once water is running through the bar apply and hold full throttle to begin cut.
2. If the engine does not start in 3 hard, fast pulls with the throttle locked, fully squeeze and hold the trigger
5. Use full throttle for the entire cut. Feathering the throttle makes the saw difficult to
while pulling the starter cord 3 more times.
Note: To hold the trigger fully open it may be necessary to insert right foot into rear handle opening
control.
and twist.
STOPPING THE SAW
Operation
Before cutting, make sure the pipe is in a safe condition to be cut.
Support the piece you are going to be cutting in such a way that the
cut will remain open during the cut and when the cut is finished.
Pinching the chain during the cut could cause chain breakage and
could result in death or serious injury to the operator.
If using the pipe clamp accessory, the clamp must be attached in
such a way that it does not move during the cutting operation and/
Never start a concrete chain saw without the bar, chain and side
or when the cut is finished. Unexpected movement of the clamp could
cover properly assembled. Failure to do so may result in serious
cause the operator to lose control of the saw resulting in death or
injury.
serious injury.
Always move a concrete chain saw at least 10 feet (3 m) away
With the saw engaged in any surface the operator should be aware
from the fueling area before starting.
that the forces generated by the tool can force debris to be ejected
from the moving chain either away from the saw or towards the
Place the saw on clear ground. Ensure that secure footing is
operator. Ensure no bystander is located immediately in front of or
established and chain is not contacting any objects.
behind the material being cut.
Making The Cut
Air Powered Chain Saw
TITLE
OPERATION
Stop Switch
Primer Bulb
Decompression Valve
Trigger Interlock
Choke
Lever
Throttle Trigger
13