You are here

8 posts / 0 new
Last post
simja65
simja65's picture
Blade jumping off drive wheel

What would cause the blade to jump of the drive wheel? Blade is tracking good and I had made several cuts. When I reved up the engine to make the next cut the blade jumped off, it done this 3 times.

r.garrison1
r.garrison1's picture

Could be a couple things:

Is the tensioner and engine shaft drive in line with the wheel?

Is the blade pushing against the guide rollers? If they are adjusted too far forward, they can push the blade off the wheels. I like to have about 1/8" to 1/4" from the back of the blade to the lip on the rollers. 

Are both wheels in a plane with each other? 

Can you easily spin the guide rollers? If one is seized, it could cause problems.

 

Try this:

  • Set the sawblade slightly above the end of your log, right on the edge of the log (this lets you use the log as a reference point for where the blade tracks).
  • With the engine off, spin the wheels by hand, without moving the carriage.
  • Replace the covers, start the saw.
  • Rev the engine slowly, just enough so the clutch engages.
  • See if the blade starts tracking differently when running, rather than freewheeling.

If it does, this probably means something in the drive system isn't lined up with the rest of it.

If the blade tracks the same freewheeling as it does under power, it is probably the guides, or the wheels not adjusted correctly.

 

Bill
Bill's picture

When I set up the tensioner I found that if I had the belt run a little towards the motor side of the tensioner when turning it by hand once I reved the motor it would run dead center. My belt wasn't coming off before I did this but one side of the drive belt was wearing more than the other.

simja65
simja65's picture

Thanks I'll check all of that this weekend. On glancing at it it all looked good.

simja65
simja65's picture

Ended up adjusting the tracking a little and one of the rollers. Seems to be working now. Will find out soon, I have some hickory to saw uo.

r.garrison1
r.garrison1's picture

Great to hear!

Bill
Bill's picture

yes hope it's working for you !!!

simja65
simja65's picture

So far so good. Have some ceramic guide upgrades on the way.