Operation - Stanley DS12 User Manual

PREOPERATION PROCEDURES
CHECK THE POWER SOURCE
1. Using a calibrated fl ow meter and pressure gauge, make sure the
hydraulic power source develops a fl ow of 7-9 gpm/26-34 lpm at 2000
psi/140 bar.
2. Make certain that the power source is equipped with a relief valve set
to open at 2100-2250 psi/145-155 bar.
3. Make certain that the power source return pressure does not exceed
250 psi/17 bar.
CONNECT HYDRAULIC HOSES
1. Wipe all hose couplers with a clean lint-free cloth before making con-
nections. If necessary, use a light-weight penetrating oil in a spray can to
clean the hose couplers before each connection.
2. Connect the hoses from the hydraulic power source to the chain saw
fi ttings or quick disconnects. It is a good practice to connect return hoes
fi rst and disconnect them last to minimize or avoid trapped pressure
within the chain saw.
3. Observe the arrow on the couplers to ensure that the fl ow is in the
proper direction. The female coupler on the chain saw is the inlet (pres-
sure) coupler.
4. Move the hydraulic circuit control valve to the "ON" position to operate
the chain saw.
NOTE:
If uncoupled hoses are left in the sun, pressure in-
crease inside the hoses might make them diffi cult to
connect. Whenever possible, connect the free ends of
the hoses together.
CONNECTING TO A WATER SUPPLY
1. Using a standard garden hose, connect the DS12 to a city or auxiliary
water supply.
2. If you plan on operating the chain saw in freezing weather, make sure
you purge all the water from the system after each use.

OPERATION

CHAIN TENSIONING AND BAR ADJUSTMENT
A properly tensioned chain will optimize cutting performance. The tension-
ing rule of thumb for the utility cutting chain saw is that a properly ten-
sioned chain must not be bowstring tight and can be pulled freely around
the guide bar by hand easily without binding. Caution should be used
when adjusting these chains as the bar rail can become very sharp. Lift
the chain away from the bar rail when rotating and use extreme caution.
Note: The chain on the utility saw is non-directional and may be in-
stalled to travel either direction.
PROPER CHAIN TENSION
Check the chain tension often during operation, especially during the fi rst
1/2 hour when using a new chain. Adjust the chain accordingly when it
becomes loose.
If the chain is too loose, it could come off the bar, or it will allow the drive
sprocket to spin without turning the chain, which can chew up the chain
drive links. If the chain is too tight, a lot of the saw's power goes into turn-
ing the chain rather than into the cut. In extreme over-tightened cases,
the saw may not be able to turn the chain at all. In addition, damage can
occur to the bar nose and premature stretch may occur.
HOW TO CHECK
Before cutting, check for proper tension by pulling the chain around the
bar by hand. If you cannot easily pull by hand, the chain is too tight and
needs to be loosened.
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