No power to rear wheel ( clutch pressure plates or rear hub final drive?)

[Guest]

Hello,

I have a 1982 Suzuki GS850.

I don't have enough power to the rear wheel to make the bike move foward.

I am able to go in first gear and when the bike is on the trackstand, the wheel will turn following throttle.

Following what I read, clutch pressure plates and final drive are to inspect ?
Is there any other tests I should do ? or look for ?

Thanks for your help

[JTGS850GL]

Check the clutch adjustment first, but I'm suspicious of a bad final drive spline. 1982 is notorious for this. See if you can turn the rear wheel by hand while in gear and on the center stand. If you will turn and feels real notchy then I'd suspect the final drive. You need to remove the rear wheel to inspect the spline. Just be aware that you need to look at the teeth deep inside of the final drive unit for wear. What you see from the outside is not representative of the contact area that gets worn down. Could also be a bad secondary. Hard to see it being the clutch though unless it's WAY out of adjustment.

[850GT_Rider]

Check the clutch adjustment first, but I'm suspicious of a bad final drive spline. 1982 is notorious for this. See if you can turn the rear wheel by hand while in gear and on the center stand. If you will turn and feels real notchy then I'd suspect the final drive. You need to remove the rear wheel to inspect the spline. Just be aware that you need to look at the teeth deep inside of the final drive unit for wear. What you see from the outside is not representative of the contact area that gets worn down. Could also be a bad secondary. Hard to see it being the clutch though unless it's WAY out of adjustment.

...and the engine OFF. Just sayin'.....

[fastbysuzuki]

First I would check the clutch cable disconnect it from the clutch arm and make sure it slides freely and has no tight spots.
check that the arm is possitioned correctlyand there is around 3mm of free play at the lever when it is connected. As said in other post check the splines on the final drive for wear and renew if needed.
if it is still the same put the bike on the side stand and remove the clutch cover check the release mechanism for movement.
check the whole clutch for wear, warpage on the plates and the friction plates

http://www.cmsnl.com/suzuki-gs850g-1981-x-e01-e02-e04-e17-e18-e21-e22-e24-e25-e26-e34-e39_model13500/partslist/FIG-14.html#results

check the spring length renew if out of spec ( do not get heavy duty springs)
there is a workshop manual here. http://zeus.mtsac.edu/~cliff/storage...nual_HiRes.pdf
check all the above before you go to secondary drive.

[Lusodub]

Thank you all for your feedback !

[850GT_Rider]

Is this a new-to-you bike or have you had it a while. In other words, is this a new problem?

What oil are you using in the engine?

[Lusodub]

Hi 850GT_Rider,

This is a recently bought bike and a new problem. I have no clue of what oil type the previous owner was using...

Thanks,

[850GT_Rider]

That makes it a little more difficult, eh?

Do the checks the others have outlined & let us know.....

[JTGS850GL]

It's not an oil problem.

[Lusodub]

Hi Guys,

So the clutch cable adjustment is done and good.

I manually turned the rear wheel while on gear (track stand) and there is definitely a grinding noise so I removed the rear wheel.
Here is the pictures of the spline (wheel and rear hub final drive )

In my opinion, The spline of the rear hub final drive looks bad... not sure of the wheel spline...

Any feedbacks?

Thanks,

[Lusodub]

more pictures

[Lusodub]

sorry for that ... i'm having difficulties to upload pictures

[Lusodub]

this is the wheel-final-drive-flange. We dont see it on the pictures but the teeth are much shorter...

[hjfisk]

Looks like you need the wheel side piece.. You can get a new one from Suzuki.. They are a common problem on they 82 model bikes

[Lusodub]

Hello,

Should I replace only the wheel side piece or both ?

thx