Front Sprocket Question

[Mr. Jiggles]

I recently changed my chain and sprockets (630) and have noticed increased drivetrain noise since. This afternoon I pulled the front sprocket and noticed that there is a lot of play in the sprocket from side to side on the output shaft - between 1/8 and 1/4". I also noticed that my sprocket nut does not tighten all the way to the sprocket even with the lock washer on. Is this normal? As far as I can tell the front sprocket is the correct part - sunstar #609.

Thanks in advance,

Jeff

[dtkid]

i just put a sunstar on myself. i don't think it should move at all side-to-side. could be that your male/drive gear is kaput. others on this site know more than me..........but, your front/drive gear should fit snuggly without wiggle (or jiggle) even if you have to use washers or something else (i took the goose-neck washers and bolts off an old bicylcle of my youngins' and tightened' a front/drive sprocket on a gs750 a couple years ago). again, the answer is here; i just may not have it on a fri. night (i like to have a little taste of.......well, you know....... on a fri. nite there ain't nothin' else to do in the mountains. we're in the middle of a thunderstorm right now...... cain't even finish my pathetic attempt at a paint job. good luck

[Mr. Jiggles]

I double checked the sunstar number with Dennis Kirk's number (where I got it) and everything matches. I noticed that the sprocket nut has tabs on the face of the nut that prevent it from screwing completely through the threaded part of the shaft. I found one other thread in which someone had a nut that sounded alot like mine. Is this typical?

[pano]

I happened to check mine the ther day and it too had about an 1/8 inch of play. I re torqued it to 80 ft/lb (as specified in the manual if I recall correctly) and it tightend right up.

It should not be loose and an aftermarket nut is available that is not supposed to back off like the stock one does. Scroll down the page here and you will see it.

http://www.gszone.biz/clutches.html

[Mr. Jiggles]

Thanks for the reply. I'm thinking that this nut might be some sort of stop nut that doesn't use nylon, something that I haven't seen before. I actually have one of the APE nuts lying around which I was going to use for the clutch. I think I'll give it a try.

One other possibility is that I installed the sprocket in the wrong orientation.