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Posted by greenbarn
 - August 27, 2017, 10:30:56 AM
Quote from: drifter-paul on August 27, 2017, 06:16:49 AM

I was worried about  mine.  At 80,000 miles (when ARE you guys going bloody metric !). I removed the tensioners and checked the remaining throw left  - AND it was borderline minimum.

Paul, it seems I've read that the chains will hit the spark plug tubes (if I can remember correctly) if they are too loose.  Is that right?  Did you see any indication of that?  I only have about 30K miles on mine, but it's kind of noisy so thought maybe I'd tear it down this winter.
Posted by drifter-paul
 - August 27, 2017, 06:16:49 AM

I was worried about  mine.  At 80,000 miles (when ARE you guys going bloody metric !). I removed the tensioners and checked the remaining throw left  - AND it was borderline minimum.

Then, actually stripped down to the frame and redid wiring loom, cams, EPA etc etc etc -

BUT what I noticed of interest to you, was that the forward left sparkplug area (and therefore rear right also) have a cylinder around them.

I would suggest - after 50,000 miles
1 - Remove the left forward/right rearward plugs. Then remove the plug "collars", internal hex (22mm +). If there is a scuff mark around the throat of these collars when removed,    then replace tensioners IMMEDIATELY with new ones.
2 - if OK then gently remove the tensioners, after having read the instructions on this site, and check for useage wear, then replace/or purchase the extender rod mod, as per this site, then gently re-insert them as per instructions.

Short answer, ifyou are a non-thrasher but enthusiastic user, 50K Miles, and then check every 10,000.

:)

Posted by greenbarn
 - August 26, 2017, 22:01:37 PM

That's a good question..  I have not heard much on the subject of this -  I know it's a somewhat noisy engine anyway, but I've read some things that say the sign of out of adj. chains is the excessive chain rattle noise.  But what is excessive, eh?

Posted by bikerbob5864
 - August 12, 2017, 02:18:59 AM

At approx. what mileage should one be checking for wear on the cam chain tensioners?

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