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DS11 User Manual ◄ 11
PREOPERATION PROCEDURES
CHECK THE POWER SOURCE
1. Using a calibrated ow meter and pressure gauge,
make sure the hydraulic power source develops a
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 connections. 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 ttings or quick disconnects. It is a
good practice to connect return hoses rst and dis-
connect them last to minimize or avoid trapped pres-
sure within the chain saw.
3. Observe the arrow on the couplers to ensure that
the ow is in the proper direction. The female cou-
pler on the chain saw is the inlet (pressure) 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 difcult 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 DS11 to
a city or auxiliary water supply.
2. Holding the saw away from your body, turn the saw
on and read the water pressure at the water gauge.
Water pressure must be at least 35 psi/2.4 bar to
avoid damage to the saw bar and chain.
3. If you plan on operating the chain saw in freezing
weather, make sure you purge all the water from the
system after each use.
4. If the water pressure is below 35 psi/2.4 bar, make
the required adjustments to the water supply. If the
required pressure cannot be achieved, you must
use the Stanley Electric Water Pump Kit (Part
Number 26020 or the Power Unit Water Pump Kit
P/N 29361).
CHECK CHAIN AND BAR ADJUSTMENT
1. Check the chain tension often during operation, es-
pecially during the rst 1/2 hour when using a new
chain. Adjust the chain accordingly when it becomes
loose. Follow the procedures contained in the Main-
tenance and Adjustments section of this manual.
2. Make sure the chain does not exceed a clearance of
1/4 in./6 mm from the bar (see Figure 2). Exceeding
the maximum clearance increases the chance of the
chain being dislodged from the bar groove.
Min
1/16”
Figure 2. Maximum Chain Clearance
3. Make sure the bar attaching nuts are fully tightened
and the chain guard is in place.
CHECK CHAIN SEGMENT WEAR
1. Using adjustable calipers, measure several chain
segments as illustrated in Figure 3.
Figure 3. Chain Segment Wear
2. If the average measurement is less than 1/16-
inch/1.6 mm, then the chain must be replaced. Refer
to your Service Manual for chain replacement pro-
cedures.
CHECK THE WATER SUPPLY
1.
IMPORTANT
Chain and bar damage will occur if the chain saw
operates without the proper water supply.
Always have water running before starting the chain
saw.
2. Water ow must be 4 gpm/15 lpm at 50 psi/3.5 bar
minimum.
OPERATION