Chain streched. What is the 750's correct Service Limit?

[mharrison]

Well, after many drag racing type starts over the weekend, I've had some unusual sounds coming from near my left foot particularly when between about 3-5k RPM's in 1st and 2nd. It may be doing it at higher RPM's and gears and I just can't hear it. It isn't terribly loud. I figure it is either my chain, my transmission, or the bottom end of the engine.

I did the "pull from the rear sprocket test" and the chain looked OK. I also did the manual's suggested 21 pin (20 pitch) measurement and was over the 319.4 mm Service Limit. My manual is for a 600 and I have a 750, is this Service Limit still correct? At any rate I was at about 324 or so mm. I'm hoping the chain was the noise I was hearing. It was also a little loose, so I adjusted it a bit and oiled it.

So the questions are:

1. Is 319.4mm the correct Service Limit for an '05 750's chain?
2. (If it is) Is it safe to ride like this until my new chain comes in?

[Spedee]

Same I believe

[arsenic]

you have a 2005 according to your ride profile, in that case, the 600 and 750 are, in fact, the same.

[The CyberPoet]

Time for new chain & sprockets.
My general advice is the 530 Combo Kit (Vortex steel sprockets/RK HSO chain) from BikeBandit. This link ought take you directly to the right product page:
BikeBandit: 98+ Kat 750 Combo Kit [Caution: lists aluminum rear sprocket, should be steel in that kit]

Cheers,
=-= The CyberPoet

[motorbiker]

Call me a risk taker. While waiting for my new chain to arrive (seller shipped the wrong size at the first time...), I inspected every link and properly lubed the chain and rode very gently. That time my non-O-ring chain was stretched to a point I had no more room to adjust. I knew if the chain had failed I would have lost much more than the chain.

I just finish installed the new RK X-ring and new sprockets (a couple of hours ago) and I already feel much better now.

Get them replaced for a peace of mind.