Yz250 clutch

njracer46
Posts
713
Joined
3/20/2011
Location
USA
Edited Date/Time 3/25/2016 10:10am
I've been on ktm 250 2 strokes the past few years so never had to worry about adjusting clutch play. I just got a new yz250 and I've clocked 8 hours on it. I am completely out of adjustment on the perch. I know the cable has another adjusting point. Mxa suggests heavy duty springs, is this something most people do? I'm an aggressive b rider, 6'1 190 lbs, not a clutch abuser but I do use it. I don't want to burn the clutch out within 20 hours so looking to see what other people are running. I looked into springs once, they had cheap ones like the tusk brand and then the Hinson ones. I've had good luck with tusk products but hard to beat Hinson in the clutch department especially being that they are only 40$. What is everyone running? Not looking for a complete clutch kit either.

Thanks

Also how often do most of you get out of plates or even a basket? My 13 ktm had over 150 hours on it and never even took off the clutch cover. I know I'm not doing that with this bike
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Markopolo400
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1431
Joined
7/24/2012
Location
St. Paul-ish, MN, USA
3/24/2016 12:25pm
If I were you I would take the clutch apart and measure the plates to see what the wear actually is.

I've found that changing the oil frequently (~2 hours for me) greatly extends clutch life in my 250s.
njracer46
Posts
713
Joined
3/20/2011
Location
USA
3/24/2016 1:05pm
I'm doing the same cycle I was on the old bikes. Every 2 races change oil or every 3-4 practice sessions. Running gear saver to. Is it normal to be completely out of play on the perch after that little of time? I practiced about 30 starts last week to so I'm assuming that has something to do with it.
Andrew337
Posts
129
Joined
6/24/2015
Location
Grand Prairie, TX, USA
3/24/2016 1:28pm
Did you check the in-line cable adjuster to be sure the jam nut didn't come loose or something? I'm at around 40 hours with no issues since rebuilding my clutch,running Bel-Ray Gearsaver going 5 hours between changes.

OEM plates & springs, Pro-X basket, OEM cable, Works Connection perch. It's all been flawless for me, but I'm not hard on clutches.
njracer46
Posts
713
Joined
3/20/2011
Location
USA
3/24/2016 8:28pm
I did not check that nut, noticed it sitting on the start line before my last moto Sunday. I'm getting the bike prepped for Saturday tomorrow so I'll check that out and take the plates out after this weekend. Anyone running stiffer springs? Do they just help so you don't have to adjust free play as often?

Also noticed my shock is leaking a little oil down the shaft, my suspension guy said it would be fine for now just as long as it's not spewing oil like crazy so I guess I'm getting springs and a revalve earlier then I planned. I know I'm a little heavy for the stock springs but the suspension does not feel to soft for me. It actually feels pretty dam good with just a few clicker adjustments.

The Shop

YZed250
Posts
1370
Joined
11/9/2014
Location
Costa Mesa, CA, USA
3/25/2016 9:21am
Back in 2005 I raced a YZ250 after a few years riding a 125 and 250Fs. Those little bikes taught me not to use the clutch. I rode tight woods, mx, sand, you name it.

When I got on the YZ250 really used the clutch a lot more and on almost every corner to try and modulate the power. I would typically flick the clutch on most corners to stop spin or lift up the revs.

I never or rarely had to adjust the clutch, but I did find that after 9 months of riding every weekend, I started to notice a little slipping. I switch to new springs (may have also swapped plates) and was surprised that I got a lot more bite.

Adjust the cable at the in-line adjuster and set the free play before your moto. If you're having to turn the adjuster more than a couple of turns during a race, you may need to look at the oil type, service interval or HD springs or your riding habits.

Heat build up during 30 consecutive starts would fry almost any clutch. Take a break at least every 3 starts and spin a lap to allow time to cool down.
seth505
Posts
10216
Joined
4/1/2008
Location
SD, CA, USA
3/25/2016 10:10am
Hmm I never had an issue with my yz clutch. I used all stock components and then replaced it with GYTR kit at like 50 or 60 hours I think.

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