•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
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
27