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16 ► CS25/28 User Manual
CHAIN TENSION ADJUSTMENT
1. Observe all safety precautions.
2. When the chain appears loose, lubricate it well and
let it cool for a few minutes to allow for contraction
of the chain. Disconnect the pole chain saw from its
hydraulic power source.
NOTE:
Perform Steps 3 through 6 while holding the top end
of the saw bar upward.
3. Loosen the two saw bar nuts slightly.
4. Tighten the chain tension screw until the bot toms of
the tie straps and cutters just touch the saw bar rails
of the bottom of the saw bar.
5. Pull the chain around the saw bar by hand to be sure
it ts the sprocket and saw bar properly. The chain
should move easily.
6. Hold the saw bar tip up as you tighten the two saw
bar nuts.
7. Connect the pole chain saw to a hydraulic power
source. Operate the chain at low speed (gpm) for a
minute or two while pumping extra oil on the chain.
8. Stop the pole chain saw and check the tension.
If it has loosened, disconnect the pole chain saw
from the hydraulic power source and perform Steps
3 through 6 again to tighten the chain to the correct
tension.
9. Reconnect the pole chain saw to the hydraulic pow-
er source. Operate the saw and make a few easy
cuts. Check chain tension and readjust if necessary
(disconnect it from the hydraulic power source and
perform Steps 3 through 6).
NOTE:
Never break in a new chain under a heavy cutting
load.
10. Watch the chain tension carefully for the rst half-
hour of cutting.
AUTOMATIC OILER ADJUSTMENT
1. Observe all safety precautions.
2. The automatic oiler is located in the front of the mo-
tor housing. The oil volume can be adjusted with a
3/16 inch Allen wrench by turning the plug counter-
clockwise to increase output and turning clock wise
to decrease output.
NOTE:
Oil output varies proportionally to load and operat-
ing pressure. It should be adequate for most opera-
tions as adjusted from the factory.
3. Initial oiler adjustment is made with the saw bar and
chain removed.
The following step can be hazard ous. Failure to
heed the instructions could result in serious injury.
4. Connect the pole chain saw to a hydraulic power
source and check for proper operation. READ THE
FOLLOWING CAREFULLY BEFORE PROCEED-
ING.
a. Make sure the hydraulic power source is run-
ning at the lowest gpm/lpm rate it can while still
producing full pressure.
b. Secure the pole chain saw rmly in a bench vise
and place the correct size wrench on the 1/2-20
nut securing the sprocket.
c. Connect the hydraulic power source to the pole
chain saw and turn the circuit control valve to
the ON position.
d. With a rm grip on the pole chain saw and
wrench, SLOWLY squeeze the trigger to ac-
tivate it.
e. Adjust the oiler for a ow of approximately one
drop every one to two seconds.
f. Release the trigger and remove the wrench.
OPERATION