Adjustments - Fairmont HPS513CB Service Manual

Chain Saws with Chain Brake

Adjustments

Checking and Setting the Automatic Chain Oiler
The automatic chain oiler provides a constant supply of
oil to lubricate the bar and chain whenever the saw is
operating. An adjustment screw controls the amount of
oil supplied.
1. Run the saw at full rpm.
2. If the tip of the saw gives off a fine spray of oil, the
automatic oiler is working properly. If the saw does
not give off a spray of oil, adjust the oiler.
Note: For better results, hold saw so that the tip of
the saw blade is pointing toward a clean sheet of
paper or cardboard and run the saw at full rpm. If
the automatic oiler is working properly, the paper or
cardboard should soon show small droplets of oil.
3. Stop the hydraulic power source.
4. Twist the adjustment screw 1/2 turn as follows:
• clockwise to decrease the oiler output.
• counterclockwise to increase the oiler output.
Automatic Oiler Adjustment Screw
Automatic Oiler
Adjustment Screw
5. Start the hydraulic power source.
6. Repeat until the oiler output is adjusted correctly.
New Chain Break-In
1. Run the saw at low chain speed without cutting
wood for 2 to 3 minutes. Check the output from the
automatic oiler.
2. Stop the hydraulic power source. Disconnect the
hoses. Allow the bar and chain to cool. Check the
tension and adjust if necessary.
3. Connect the hoses. Start the power source. Make a
few easy cuts at moderate chain speed.
4. Stop the hydraulic power source. Disconnect the
hoses. Allow the bar and chain to cool. Check the
tension and adjust if necessary.
5. Connect the hoses. Start the power source. Use the
saw for moderate cuts during the next 30 minutes of
use.
Greenlee Textron / Subsidiary of Textron Inc.
Checking Chain Tension
1. Stop the hydraulic power source. Disconnect the
hoses. Allow the bar and chain to cool.
2. Pull the saw chain around the bar. The chain should
rotate around the bar easily. If it does not, see
Chain is Difficult to Rotate Manually in the Trouble-
shooting table.
3. Check the tension as follows:
Pull the saw chain away from the bar (see the
illustration) using approximately 4.4 Newtons (2 lbs)
of force. The clearance between the chain and bar
should be approximately 3.2 mm (1/8"). If there is
too much or too little clearance, proceed to Adjust-
ing Chain Tension.
Proper Chain Tension
Approx.
4.4 Newtons
(2 lb.)
Adjusting Chain Tension
1. Loosen the two bar flange nuts.
2. Turn the saw chain tension adjusting screw until the
proper tension is achieved, as follows:
Pull the saw chain away from the bar (see the
illustration) using approximately 4.4 Newtons (2 lbs)
of force. The clearance between the chain and bar
should be approximately 3.2 mm (1/8").
3. Hold the bar nose up and tighten the two bar flange
nuts. Torque to 16.9 Newton-meters (150 inch-
pounds).
4. Check the chain tension again.
5. Rotate the chain around the bar manually. If you
hear a clicking noise, the chain drive links are hitting
the bar. Repeat the Adjusting Chain Tension
procedure.
10 4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
Approx.
3.2 mm
(1/8")