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Chain tension all out of whack

  • Thread starter Thread starter kb_air
  • Start date Start date
K

kb_air

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Hey, fist time posting, ive consulted the site a few other times and found what i was looking for in the forums. i have had no such luck this time.

i have a 1978 gs750 (not E model) and i noticed my chain dragging a bit. so i went to adjust it and as my wheel turns it gets super tight and some degrees later its very loose. i have the tension-screw-dealios even as far as i can tell, i lubed the chain up Very well. don't know what to do. consulted the manual. has nothing on the subject. im lost please help!
 
Hi and welcome aboard.

Your chain is either very dirty or, most likely, it's worn out. If it's a non o ring type you could give it a good wash in diesel and then a lube and see if it's any better. Don't do that with an O ring chain - you'll ruin it (though it'll be worn out anyway).

If you replace the chain then change the sprockets at the same time (get a kit). Otherwise the parts won't match and they'll all wear out super fast.
 
ok thanks alot ill try that. how do i know if its an O ring type or not? im not familiar with the difference. and yea my chain is pretty damn dirty so id like to just give it a scrub before i bought a new one. thanks for the help.
 
Your chain may be worn out, but it sounds like your sprockets are too,
Your chain is riding high up on the teeth and as the wheel goes around, it's gets tight, then it drops down lower on the teeth where it's suppose to be and your chain loosens up. Look at your sprockets and see just how worn they are, about the only thing you can do once they get very bad is replace the whole chain, spockets with new ones. Otherwise you could damage your transmission, bearings if too tight, or throw a chain if it's too loose.
 
ok, so i was looking up a chain&sprocket kit for a 1978 gs750 C and i cant find it on bikebandit. What is the best GS resource for parts that you guys have found?
 
You won't find a kit per se so you'll need to buy each individually. Z1 is a great place to start but so is Bike Bandit, G&S Suzuki, and a few others.
 
thanks everyone for the help.


ok so here is where im at. i have

KL12-8097
Cam Chain - EK 219H 120 link


now im not sure what sprocket will work for it.

630 (JTR818 series) 42T Rear Sprocket
630 (JTR818 series) 41T Rear Sprocket
etc. anyone know?



im assuming it would say in the manual. (is being shipped to me at the moment and is 4+ days away) and the best i have is a 1982 gs550 manual.
 
kb_air said:
thanks everyone for the help.


ok so here is where im at. i have

KL12-8097
Cam Chain - EK 219H 120 link


now im not sure what sprocket will work for it.

630 (JTR818 series) 42T Rear Sprocket
630 (JTR818 series) 41T Rear Sprocket
etc. anyone know?



im assuming it would say in the manual. (is being shipped to me at the moment and is 4+ days away) and the best i have is a 1982 gs550 manual.
Click to expand...
A cam chain is for the overhead cams, it's not the transmission drive chain. I couldn't even give you a clue about the rest, all I have are shaft drives.
Look on this site for manuals and a whole lot of other info: http://members.dslextreme.com/users/bikecliff/
He's basscliff here and he'll also give you a big welcome aboard.
 
Your cam chain is for your engine, this is not to be confused with a drive chain, unless you need that also.

You could count the teeth on your sprockets and the links on your chain,
don't know what size chain, maybe I can find it.
 
jeeze, i dont know why i didn't see that. thanks for the link. ill post when i have something relevant! thanks a bunch.
 
I strongly recommend that you take this opportunity to convert to a 530 chain and sprockets. Slightly less unsprung weight and lots more variety in chains available. Call Z1Enterprises, they have all the conversions done for you. The front and rear sprocket teeth counts and the link count will all be different.
Best of luck.
 
I think you have a 96 link 630 chain. If it is that's a big chain and getting increasingly harder to find. There still may be one left at RK America for
$68. with 98 links, you'll have to shorten it.

http://www.rkexcelamerica.com/blemished_dirt_atv.html

This is a premium XW chain, rated for 1,400cc bikes. You can pay upwards of a couple hundred maybe more bucks for a comparable chain elsewhere.

Also, if you don't know there's a GS750 "service" manual on BikeCliff's Website: It may have all the info you need.

http://members.dslextreme.com/users/bikecliff/
 
well, im looking through that online service manual and i cant find any chain specs. its driving me up the wall. i found a oem sproket for an excess of 70 bucks. :|
 
Please see my post above. You have a perfect opportunity to escape the 630 curse.
 
The chain is listed on page 2 of General information, under Transmission,
there's a listing for drive chain, which states,
TAKASAGO #630SO, 96 links.

But everyone seems to be going to the 530 chain, it's lighter and smoother I've been told, and if your going to replace it all, nows the time as 630 chains are going the way of the dinosaur.

If you want to find 530 conversion chains, check E-bay, there's a few on there. Just be careful, know what you need and what you're getting!

http://motors.shop.ebay.com/i.html?...ins&_osacat=0&bkBtn=&_trksid=p4506.m270.l1313


or, just querry E-bay Motors for chains in general, just type GS750 Chains
 
im just going to cal z1 tomorrow when they open and see the most economical solution. whether that be converting or sticking to original. you guys have been a big help. ill post what i find out tomorrow
 
Conclusion!!!

Conclusion!!!

OK! so i called z1 and bikebandit both. Z1 had my chain and sprockets in stock, bikebandit had it on back-order so i went with Z1. The chain is a 630 96 link O ring style. 14 teeth front sprocket and a 41 tooth rear (i think, ill recheck and post if this is different) Tottal cost of $175.ish bucks. The cost difference in getting it converted was within 10 bucks.


The biggest problem im going to have is getting the old chain off, a chain breaker for a 630 is upward around $80-90, so im going to grind it off and hammer in the rivets i suppose.

you guys rock, i know im not the most mechanically savvy person in the world and yall helped out enormously. much <3!
 
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