Top rubber band rides up over lip of the wheel and jams up against the housing causing the saw to grind to a halt. This does not happen immediately but after a few minutes of running (1 or 2 minutes). Close observation with the housing partially open so that you can see what is happening it looks like the rubber band is stretching up at the edges due to centrifugal force at the top of the wheel. Vibration sets is along the edge of the rubber band that eventually causes it to ride over the side ridges of the wheel. Depending upon the alignment of the bland the band is then force over the front or back edge. Note that the alignment is visually centered on the wheel, I have measured it with any precision instrument.
Rubber band on the bottom wheel shows a stretching as well on the back of the wheel where the blade and wheel part ways. The rubber lifts a good inch or two from the wheel. Once enough vibration sets in at this loose point it eventually jumps the edge of the wheel.
I have tried playing with the blade tension and alignment. Slight changes in alignment just caused the rubber to come off either the front or the back of the wheel. Changes in blade tension did not make any noticeable difference. I tried adjusting the tension up and down a maximum one blade size (currently using a 3/8" blade).
Any guidance you can provide would be appreciated. Thanks.
My Delta 14" had the same problem. My fix was to get new rubbers, took care of my issue. They do stretch, but the newer the rubbers are the more the will retain there form, the older they are, not so much.
anaanymous
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