alignment causes broken blades. Consult Section 4-
B and check for this condition. Another cause of
blade breakage is too much cutting force. Consult
Section 3-A and the Saw Blade Selection and
Application Manual to determine the correct
cutting force for the material being cut.
D. STRIPPED TEETH. The most frequent cause
of stripped blade teeth is incorrect tooth pitch for
the job being performed. Consult the saw blade
manual to determine the proper blade tooth pitch
for the material and size being cut. Sometimes
excessive cutting force will cause teeth to strip.
Consult Section 3-A and the saw blade manual
concerning proper cutting force. Another
possibility is improper blade brush adjustment.
Consult Section 4-H to correct this condition.
Figure 17
E. POOR BLADE LIFE. This problem is usually
caused by a blade speed too fast for the type of
5. TROUBLE SHOOTING
material being cut. Consult Section 3-B and the saw
blade manual to determine the proper blade speed.
Problems will eventually be encountered with any
Cutting scaly material or cutting through or near
machine tool, and it is our intent here to help solve
torch-cut areas can also reduce blade life.
them. The Model L-9 saw is a basically simple
machine, and it is usually not difficult to find the
F. ERRATIC FEED. If the cutting head does not
underlying cause of the problem.
feed smoothly into the cut but surges and hesitates,
we suggest you consult Section 4-A concerning
A. CROOKED CUTS. This problem can be caused
lubrication. This problem may also be caused by
by many faults which may occur singly or in any
improper blade tooth pitch for the job being per-
combination. A machine that is perfectly aligned
formed. In this case, consult the Saw Blade
and properly operated can make unsatisfactory
cuts if the blade being used is defective. For this
Selection and Application Manual to determine the
correct blade pitch. Another possibility is poor
reason, if a machine suddenly begins to cut out of
blade brush adjustment. Consult Section 4-H of
tolerance, we recommend that a new blade be in-
stalled as a first attempt to obtain satisfactory
this manual.
cuts. Always keep the blade guide arms adjusted as
6. SPARE PARTS FOR MINIMUM DOWN-
close to the work as practical, as a long blade span
TIME
DESCRIPTION AND
QUANTITY PART NO. COMMERCIAL PART NO.
If a new blade is installed and the machine con-
901500 Guide Bearing Fafnir 5200 PP
4
tinues to make crooked cuts, consult Section 3-A
901200 Guide Bearing Fafnir 200 PP
2
and the saw blade manual concerning the proper
1
900083 Blade Brush
cutting force for the material being cut and the
4-SPEED MACHINES ONLY:
length of blade in contact with the cut.
1
908503 Drive Motor Belt 4L280
2
908504 Final Drive Belt 4L390
Crooked cuts are sometimes caused by the blade
VARIABLE SPEED MACHINES ONLY:
being too loose. Consult Section 2-E concerning
1
909041 Variable Speed Belt 260K8
blade tension. If the preceding suggestions have
1
908550 Timing Belt 270L100
been followed and the machine still does not cut
straight, consult the separate manual on saw guide
7. REPLACEMENT PARTS LIST
adjustment and carefully check the adjustment and
A. Required for any part order:
alignment of the saw blade guides.
1. Saw model
B. BLADE STALLS. If the blade stalls during a
2. Serial number
cut, first check to determine whether the blade is
B. This parts list does not show all the parts that
slipping on the drive wheel or if the V-belts are
make up the machine. We have tried to show all the
slipping on the pulleys. If the saw blade is slipping
common parts that may require replacement. Also,
on the drive wheel, the blade is not properly ten-
some parts may not be shown due to machine
sioned. Consult Section 2-E and properly tension
design changes. When this occurs, order parts as
the saw blade. If the V-belts are slipping on the
described above.
pulleys, consult Section 4-F and properly tension
C. Parts that can normally be obtained from local
the belts. If nothing is slipping but the motor is
mill supply stores, etc. are not listed.
stalled and will not start, allow it to cool, then push
the stop or reset button to reset.
D. Parts not listed: Give a complete detailed
description of what it is, where it is used, and what
C. BROKEN BLADES. Consult the separate
it does in operation. This will often give us enough
guide booklet and check to see if the blade guide
information to supply the part.
rollers are too tight. Sometimes poor blade wheel
26