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Author Topic: KX85 Clutch Housing  (Read 9964 times)

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Offline Bidule

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KX85 Clutch Housing
« on: May 27, 2016, 12:28:18 PM »
 Hi guys

I removed the clutch cover on my son's KX85 2011 today and i noticed that there is some play on the clutch housing, i need to know if this is normal or not ?   :?
I am trying to isolate a knocking noise coming from the engine, i tought it was the big end bearing but i removed the cylinder and i can't feel any play on the con rod lower bearing.
I uploaded a short video here https://youtu.be/ViKIKCZMjvA. I appreciate your help. 
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Offline Foxx4Beaver

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Re: KX85 Clutch Housing
« Reply #1 on: May 27, 2016, 11:01:18 PM »
might be worth pulling the clutch pack, and be sure everything is in order....
there should be three washers in there, (two of them identical)...if one of those washers are missing or broken, or worn out, it could cause some play...check the bushing to be sure it's not played out too.

it wouldn't be a bad idea to replace the 2 needle bearing cages, the washers, and bushing anyways whilst it's apart, should be under $50....but that's just me.
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Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline Bidule

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Re: KX85 Clutch Housing
« Reply #2 on: May 29, 2016, 09:44:10 AM »
I bought the bike couple weeks ago and the guy said the engine has never been opened before so there shouldn't be missing parts.
I will buy the 24mm socket tomorrow to remove the clutch basket and will check to make sure.
If there is no missing parts, can this be a bearing inside the crankcase ?

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Offline reklessj

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Re: KX85 Clutch Housing
« Reply #3 on: May 29, 2016, 02:58:29 PM »
Quote from: Bidule on May 29, 2016, 09:44:10 AM
I bought the bike couple weeks ago and the guy said the engine has never been opened before so there shouldn't be missing parts.
I will buy the 24mm socket tomorrow to remove the clutch basket and will check to make sure.
If there is no missing parts, can this be a bearing inside the crankcase ?


You might want to buy the tusk clutch tool too, it's cheap and has worked great on all my bikes from 85cc to 500cc. Just don't get Foxx started on Rocky Mountain MC!! :wink:
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My rides: 1994 KX500, 1988 T4, 1998, ZXI 1100 JETSKI, 2003 MOUNTAIN CAT 900
WIFES (Baby Fiver) rides: 2004 KTM 105SX,1992 LT250R, 1995 ZXI 900 JETSKI,  2011 RMK 600
SONS ride: 1995 YZ125,2002 RM 250
other rides: 2007 RMZ450 RC Ediition, 2003 RMK700

Offline Foxx4Beaver

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Re: KX85 Clutch Housing
« Reply #4 on: May 29, 2016, 08:37:16 PM »
Quote from: reklessj on May 29, 2016, 02:58:29 PM
Just don't get Foxx started on Rocky Mountain MC!! :wink:

 :lol:
 :-P :-P :-P
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Excuse me, ma'am...but you've got extremely nice legs!!!...what time do they open???                                                                                                               https://www.youtube.com/watch?v=n8tCgN3aryQ

Offline Bidule

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Re: KX85 Clutch Housing
« Reply #5 on: May 31, 2016, 12:52:10 PM »
Ok guys

I was able to remove the clutch hub yesterday.  
The end of the transmission shaft behind the clutch show signs of overheat. The bearings, washers and bushing looks good.
There is no missing parts,the play comes from the shaft. Is this normal and if not, what is the fix ? :?





https://www.youtube.com/watch?v=BmzYUKt-p1U
« Last Edit: June 02, 2016, 09:32:42 AM by Bidule »
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Offline BFT-Mechanic

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Re: KX85 Clutch Housing
« Reply #6 on: June 10, 2016, 03:44:19 AM »
The blue color looks to me like it has bin heat treated to harden the splines.

If your clutch was overheated to this blue color your clutch housing and bearings would show more damage.


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