Author Topic: 1985 kx250, clutch problems  (Read 4522 times)

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Offline Sonic1988

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1985 kx250, clutch problems
« on: November 13, 2016, 01:52:09 PM »
Hello I'm new to the site, I have an 85 kx 250, was out riding it this weekend and my clutch stopped engaging, had no problems shifting, but I couldn't clutch to use the back brake or stop the bike. The cable was still connected the are that works the clutch, but that arm wouldn't grab anything, I could just spin it, I tool it out but have no idea what it does on the inside of the crank case, I don't know much about this bike it was given to me by a friend, I'm assuming I need to split the crank case to fix this, but would like some input as to what to expect when I do it. I will try and attach a pic of the arm I'm talking about.

Offline Sonic1988

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Re: 1985 kx250, clutch problems
« Reply #1 on: November 13, 2016, 01:59:58 PM »

Offline reklessj

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Re: 1985 kx250, clutch problems
« Reply #2 on: November 13, 2016, 02:36:14 PM »
Welcome to the site sonic!! Try the search and be patient especially on weekends. You are at the right spot for info on KX's
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 Sonic1988

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Re: 1985 kx250, clutch problems
« Reply #3 on: November 15, 2016, 06:27:24 AM »
Bump

Offline umberto

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Re: 1985 kx250, clutch problems
« Reply #4 on: November 15, 2016, 06:43:10 AM »
I would take off the clutch side cover and see what condition the clutch actuation arm is in.  It goes from the lever you are holding to the other side to activate the clutch in the center.  If the bike would still move, but you can't get the clutch to work, it sounds like you've lost the connection that spreads it apart.  You would not have to split the cases to fix the issue with your clutch, but I would recommend using an OEM parts fiche on rockymountainatvmc.com or a similar site so you can see what it's supposed to look like.  Take pictures of your progress, and please feel free to ask more questions.  We'll try to be better about answering them.   :-D
Perhaps I have a dirt bike addiction?

03 KX 250/88 KX 525/2017 KX250F - Goliath
17 KX250F/04 KX250
04 KX 250 - Lunchbox's Bike
05 KX 125/144

Offline Sonic1988

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Re: 1985 kx250, clutch problems
« Reply #5 on: November 15, 2016, 06:53:35 AM »
Thank you, not sure when I'm gonna have time to open her up but will for sure be checking back here with how things are going

Offline Sonic1988

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Re: 1985 kx250, clutch problems
« Reply #6 on: November 24, 2016, 10:47:04 AM »


So I took it apart, found that the clutch nut had worked its self loose guess the previous owner had been in there a couple of times and maybe he didn't tourqe it down to the spec, so the push road wasn't able to be pushed and work the clutch. Simple fix thank you for the input guys I appreciate it very much, while I was in there I fixed the return spring in the kick start which makes it much easier to start now.

Offline Sonic1988

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Re: 1985 kx250, clutch problems
« Reply #7 on: November 24, 2016, 10:48:31 AM »
thanks giving day in the antelope valley ca

Offline umberto

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Re: 1985 kx250, clutch problems
« Reply #8 on: November 24, 2016, 10:57:50 AM »
That's a nice looking bike. How long have you had it?
Perhaps I have a dirt bike addiction?

03 KX 250/88 KX 525/2017 KX250F - Goliath
17 KX250F/04 KX250
04 KX 250 - Lunchbox's Bike
05 KX 125/144

Offline Sonic1988

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Re: 1985 kx250, clutch problems
« Reply #9 on: November 24, 2016, 12:33:21 PM »
About a year, haven't had a lot of time to ride it. But I've been making my way out to ballinger canyon and rockfront, I like those spots much more then riding the pismo dunes. The antelope valley is where my family lives so when I visit for the holidays I bring the bike and have a blast.

Offline bearlsoh

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Re: 1985 kx250, clutch problems
« Reply #10 on: December 09, 2018, 10:53:29 AM »
I also have a 1985 kx250 clutch not working i can pull the handle and it acts like handle isnt pulled in iv pulled clutch cover found inner hub broke replaced inner hub and still not working any ideas on what im miss also torqued everyrhing to spec spring bolts 78 in pds...
 Any help is much appreciated

Offline umberto

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Re: 1985 kx250, clutch problems
« Reply #11 on: December 12, 2018, 08:18:18 AM »
Hi bearlsoh, welcome to the site.  I would go to a site like Rocky Mountain ATVMC and head over to the OEM parts section.  They have parts fiches for all the bike.  I would start by making sure that all the parts you need are present.  I would then look at the clutch rod to make sure it's not worn out, and that the clutch arm is still solidly welded and not spinning. If you push on the clutch arm, is it hard to push, or can you move it easily?  Is the clutch cable in good shape and does it move the clutch arm when you grab the clutch lever?  Were you riding when it broke, or was the bike sitting for a long time?
Perhaps I have a dirt bike addiction?

03 KX 250/88 KX 525/2017 KX250F - Goliath
17 KX250F/04 KX250
04 KX 250 - Lunchbox's Bike
05 KX 125/144

Offline reklessj

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Re: 1985 kx250, clutch problems
« Reply #12 on: December 13, 2018, 07:11:12 AM »
Hi bearlsoh, welcome to the site.  I would go to a site like Rocky Mountain ATVMC and head over to the OEM parts section.  They have parts fiches for all the bike.  I would start by making sure that all the parts you need are present.  I would then look at the clutch rod to make sure it's not worn out, and that the clutch arm is still solidly welded and not spinning. If you push on the clutch arm, is it hard to push, or can you move it easily?  Is the clutch cable in good shape and does it move the clutch arm when you grab the clutch lever?  Were you riding when it broke, or was the bike sitting for a long time?
I couldn't find parts I needed on Rocky mountain (first time ever I love Rocky Mountain) I found this place had everything I need, my bikes not that old though
http://www.2wheelpros.com/
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