
CS11 Service
Manual ◄ 27
of the chain. Disconnect the saw from its hydraulic
power source.
Note: Perform Steps 3 through 6 while holding the
top end of the bar upward.
3. Loosen the two 3/8-16 bar stud nuts slightly.
4.
Tighten the chain tension screw until the bot toms of
the tie straps and cutters just touch the bar rails of
the bottom of the bar. On sprocket nose and roller
nose bars the chain must be slightly tighter.
5. Pull the chain around the bar by hand to be sure it
fits the sprocket and bar properly. The chain should
move easily.
6. Tighten the two 3/8-16 bar stud nuts.
7.
Connect the 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 saw and check the tension. If it has
loosened, disconnect the saw from the hydraulic
power source and perform Steps 3 through 6 again
to tighten the chain to the correct tension.
9. Reconnect the saw to the hydraulic power source.
Operate the saw and make a few easy cuts. Check
chain tension and readjust if neces sary (disconnect
the saw from the hydraulic power source and
perform Steps 3 through 6).
Note: Never break in a new saw chain under a heavy
cutting load.
10. Watch saw chain tension carefully for the first half-
hour of cutting. CHAIN SHARPENING OREGON
72LG/72LP (3/8 PITCH) CHAIN
Note: Chain type stamped on drive link.
11. Observe all safety precautions.
12.
Use OREGON file holder and the proper round file
7/32” for the chain to be sharpened (see tension
SERVICE TOOLS). Press the file holder so it rides
on both the cutter top plate and depth gauge with
the guide marks in line with the bar.
13.
File all of the cutters on the side of the chain opposite
yourself in the direction shown.
14.
Hold the file handle at 10° as you make a few firm
strokes away from yourself while applying pressure
against the cutting edge.
15. Move to the other side of the chain and file all of the
cutters opposite to complete chain sharp ening. File
all of the cutters uniformly.
Figure 8. Chain Sharpening
Failure to follow filling instructions can increase the
level of kickback which can result in severe injury
to the saw operator or bystanders. Do not exceed
depth- gauge settings shown above.
SETTING THE DEPTH GAUGES
1. Observe all safety precautions.
2.
Place the OREGON Gaugit, OREGON P/N 22290,
on the chain after every third or fourth sharpening.
If the depth gauge extends above the slot, file them
level with a flat file. Depth gauge setting is .025 inch.
3. After lowering, round off the front edge to its original
shape.
DEPTH GAUGE
ROUNDED
GAUGIT
STEP 1.
STEP 2.
Figure 9. Setting Depth Gauge.
UNDERWATER MODEL PREVENTIVE
MAINTENANCE
After each use, dip or spray the entire tool with a water
displacing oil such as WD40®. Pay particular attention
to the On/Off valve and trigger area of the valve handle
the drive sprocket, the chain and the bar.
SERVICE