Norton Abrasives C6136 - Manual (Page 27)

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• If the saw stalls in the cut, immediately stop the forward speed and raise the
blade out of the cut. If this is not done the belts can fail or the blade may be
damaged.
• Go slowly with a new blade until it opens up, that is, until the diamonds can
be seen and felt.
• If the saw leads off excessively small steering corrections may be made by
applying slight pressure to the right or left side of the handle bar. The drive
rollers will need to be cleaned from time to time. From time to time the Lead
Off Adjustment may need alteration fine-tuning see section F. Lead Off
Adjustment on page 26 to 27.
F. Lead Off Adjustment
1. Lead off is the term used to refer to procedure used to account for the off
sawing which occurs when cutting with diamond or abrasive blades. The
correction procedure involves the alignment of either the front or rear axle so
that the natural paths of the machine follows straight line while the blade is in
the cut. Several factors affect lead off adjustment on concrete saws. Some of
the most common factors are: surface texture, segment width, concrete
(cured vs. green), steel center thickness, aggregate hardness, blade style,
shaft RPM, cutting rate. The machines are preset from the factory with a
Lead Off at 1 foot (305mm) in 25 feet (762cm) to the operators Left.
2. To adjust the lead off on the Model C61xx concrete saw a bolt with a 1/2"
Hex Head Bolt located on the lower left corner of the rear cowl has been
provided. Turning the bolt to the right moves the left rear bearing backward
causing the machine to veer to the right. Turning the Lead Off Adjustment
Bolt to the left results in the saw veering to the left side. (Note all directional
references are made from the operator’s position).
3. Should a situation occur where turning the lead off bolt results in no
adjustment, the following procedure is required.
a) Place the left rear bearing in the middle of the adjustment range.
b) Loosen the right bearing and align the rear axle so that it rests parallel to
the back of the saw. (Note it is not necessary to remove the hardware;
simply loosen the bolts on the right rear bearing and tap the bearing
forward or backward until the rear axle is parallel.)
c) With the axle parallel re tighten the bolts on the right rear bearing and use
the lead off bolt to adjust the tracking as before.
4. The lead off on the Model C61xx concrete saw has been set at the factory.
The guards on these machines can be readily used on the Operator’s Right