Clutch Sticking

C

cchalmers

Member

Jun 7, 2008

7

0

• Jun 9, 2008

• #1

I am having problems with a sticky clutch on a 1981 RM100. After I warm up the motor I put the transmission into 1st (with the clutch lever fully engaged) and the motor stalls. It seems the clutch plates are sticking. I opened up the clutch and rebuilt it. The plates were rather sticky coming out so I squirted 10W-30 on each of them on the way back in.

Its still sticking though. Any ideas out there?

 

F

flying flea

Member

Mar 18, 2008

112

0

• Jun 9, 2008

• #2

What kind of oil do you use? Are you sure plenty of oil is getting to the clutches?

 

Someone

Member

Mar 12, 2001

865

0

• Jun 9, 2008

• #3

Maybe try a different brand/type of tranny oil. I had false neutral problems on my old bike until I switched to full synthetic for the bottom end. Not necessarily the same issue, but it can't hurt.

 

C

cchalmers

Member

Jun 7, 2008

7

0

• Jun 9, 2008

• Thread starter
• #4

I am not sure what was in there previously but the bike was sitting for a while. On the change I dumped in regular 10W-30.

But the clutch isn't sticking anymore. I throttled before I engaged into first and this seemed to shear the plates away from each other. I wonder if it sits for a couple of days if it will stick again.

What oil is recommended?

 

T

TJSCOTT1977xr75

Mod Ban

Oct 4, 2007

81

0

• Jun 10, 2008

• #5

believe it or not, a cracked clutch cover on this type of setup can cause this. it will let the cover flex and the shaft not fully engage. i had this problem on my 94 rm125

 

Someone

Member

Mar 12, 2001

865

0

• Jun 10, 2008

• #6

I use Mobil 1 15w50 in my 2005 (and in my 2001 YZ 250 when I had it).

 

J

jjearl

Member

Jul 19, 2008

6

0

• Jul 20, 2008

• #7

when you pull cluch in, revv it really hard to get unstuck! if that doesnt work, thats probably* a normal problem! i have an aftermarket clutch and it sometimes grabs in first gear when idoling too!

 

8

89RM

Member

Jun 22, 2008

36

0

• Jul 20, 2008

• #8

This may sound stupid, but make sure the clutch is adjusted properly.

 

D

digifox

Member

May 25, 2006

207

1

• Jul 20, 2008

• #9

89RM said:

This may sound stupid, but make sure the clutch is adjusted properly.

Click to expand...

+1!!!

As for the oil use automatic transmission fluid..
TCI max shift works quite well*but its like $29 a gallon*

Since i went from 10w30 to the Automatic fluid i have not had a single problem from my clutch*Before i would have to hold the clutch in till it got up to Op.temp*
Now i just start-pull-pop and go :cool:

 

K

kdx175

Member

Sep 7, 2004

104

0

• Jul 21, 2008

• #10

maybe your clutch basket is extreamly grooved if it is file it down....

 

C

CRazy250

Member

May 28, 2006

334

1

• Jul 21, 2008

• #11

whats your idea of "rebuilding"? when i rebuild somthing i replace the parts that could be bad or are bad, not just reassemble it. if you reassemble a bad part its still going to be bad. im gonna say you have warped plates on the bike and i bet its in need of some new plates, so bite the bullet and buy some new plates and clutch springs, you wont regret it. and check the basket for grooves.... any pics of this rm100?