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Ken Stebleton Posted on Jul 19, 2016
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2006 yz85 lunging at half throttle with clutch pulled in.....At the starting gate my son can only hold half throttle without the bike lunging like it wants to take off.Thanks in advance

  • Ken Stebleton Jul 19, 2016

    Yada,
    I have yet to open clutch up yet just trying to trouble shoot first....I have changed clutch cable and lever but only after this problem started.
    I don't know if yamalube is synthetic or not I will look at the bottle I was just going by manufacturer specifications

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1 Answer

Marvin

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  • Motorcycles Master 85,242 Answers
  • Posted on Jul 19, 2016
Marvin
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You need to adjust the clutch, you may have to much free play, this causes the clutch to stay slightly engaged even with the handle is pulled all the way back. Another issue is did you use the correct engine oil, to heavy a oil will cause clutch stack drag.

  • 4 more comments 
  • Ken Stebleton Jul 19, 2016

    Thanks yada,
    I asume you mean the clutch cable when you say adjust clutch?
    I use the manual spec yamalube every 4 to 5 races I change oil.
    Thanks Ken

  • Marvin
    Marvin Jul 19, 2016

    You could also have a worn out clutch pack or other clutch issue. Do you use synthetic oil, if not I would highly recommend that. And yes I mean the cable. I think it can be adjusted at both ends, to the engine end first if is an adjustment there.

  • Ken Stebleton Jul 19, 2016

    I'll try adjusting the clutch cable tonight when I get out of work.... any recommendation on What synthetic brand to run?
    Thanks Ken

  • Marvin
    Marvin Jul 19, 2016

    Any go to the cycle geat website and research oils.

  • Ken Stebleton Jul 19, 2016

    Thanks yada!!!! I will see what I can figure out

  • Justin Anson
    Justin Anson Jun 18, 2018

    Did you figure out the issue? My son's 85 is doing the exact same thing

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5 Related Answers

Anonymous

  • 2336 Answers
  • Posted on Nov 20, 2008

SOURCE: 1100 wierd clutch disengage problem

Bleed your slave cylinder on the sprocket cover and refill the hydraulic fluid. If you have any leaks you will get air in the system and it will not fully disengage the clutch. As for the 750, they have cable clutches and you just need to adjust the slack of the cable.

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Brad Hurt

  • 36 Answers
  • Posted on Feb 12, 2009

SOURCE: clutch pulling

Your clutch is not fully disengaging.Adjust the cable at the lever until you have plenty of free play.Then adjust the cable at the motor until you have full engagement then readjust lever to 3/8 in play.Fine tune at the motor.It may take a few trys but you can get it.

tim winter

  • 200 Answers
  • Posted on May 10, 2009

SOURCE: no clutch pressure.

Your clutch lever should have a cable connected to it. Trace it from the lever down to the engine and make sure nothing is disconnected or out of place. That big knurled knob next to the lever is the adjusment and locknut for cable tension. Loosen lock nut, srew cable away from lever until you have only 1/4 " of play between lever and the stop. You should feel tension coming back into the lever...If you have a bicycle ,it is the same drill for adjusting your brakes...look and see...it may help you understand the process...any bicycle mech can show you...maybe a neighbor...Good Luck to you friend....Tim

tombones

  • 3567 Answers
  • Posted on Feb 26, 2010

SOURCE: 2005 yz85 wont idle when its in gear

Be sure the clutch lever is adjusted for 1/8" to1/4" free play at the outside end of the lever. If the oil is extremely dirty, the grit can cause the clutch to drag. Change the oil, ride for 30 minutes, then change the oil again to flush out the grit. The only other thing that normally messes up a clutch is using synthetic lubricants or oils with "Special" additives. They can swell the cork on the fiber friction plates causing the clutch to drag. Usually the plates need to be replaced when this happens. NEVER use synthetics in your bike. 10w40 motor oil is what should be in the engine. Please rate my answer. Thanks.

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Anonymous

  • 6 Answers
  • Posted on Jul 23, 2010

SOURCE: clutch

Hi, you might find the nut holding the clutch basket onto the shaft has come loose, so instead of pulling the clutch plates apart you are just pulling the clutch basket along the shaft.
or if the bike has sat for a while you might find the clutch plates have stuck together, this isn't that rare, you can start the bike and roll it along at about 1st gear speed, then click it into gear, then pull the clutch in and rev the engine, this should make the plates loose again. hope this helps, please rate, thanks, good luck

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Ktmsx50 2006

the clutch is not part of your problem. I would focus on the carb work that was done
Feb 09, 2014 • Motorcycles
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The clutch wont diengage

Might be time for a Clutch Slave Rebuild.

Has the Bike sat for many months? Sometimes the Clutches stick together because the oil , like, suctioned them together.
You can start the bike, hold in the clutch and kick it into first gear. It may stall out a few times but usually that will free up the clutches. Careful , the bike will lunge foward as yo kick it into gear
0helpful
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Xlr 125 wont start do i have to pull the clutch in to start it

You need to put it into neutral in order to start it or pull the clutch and hold it down until started. I would suggest putting it into neutral. Double check that you have it in neutral by trying to push the bike without holding down the clutch when you think you have it in neutral. If the bike rolls easily, then you know its in neutral. If it won't push or seems hard to get it to roll forward then you know its still in gear. Once you have it in neutral (for sure), hold the clutch down and start the bike.

Othen than that, all you have to do is make sure its turned on and it should start. Some bikes use a key to turn it on, others have a throttle control switch. We had Suzuki Quad racers which were 2 stroke - and are a little different.
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How to drive?

you can ride the cluthch on a bike un like a car you wont hurt it its oil lubricated constantly, sitting on the bike pull the clutch in with your left hand and click the left foot lever down in to 1st, then learn how to click it back up 1 half movement in to neutral. the neutral light will come on sfter the bike enters neutral. in first gear give the throttle on the right hand a squeeze and pull the clutch in with your left hand put foot gear selector down in to 1 st and begin to release clutch slowly. hold on as bike will engage may be jerky balance yourself! when you get moving stop! by pulling the clutch in and the hand brake as you close the throttle to stop! practice your take off many times some where safe! when you get your balance in 1st gear pick up speed and begin shifting the foot gear selector up in to 2nd gear and practice closing the throttle and breaking to a safe stop. gears are generslly 1st down 1 click 2345 and6th all up from there and neutral is 1 half a click up from 1st between 2nd gear. And dont put it in gear with the kick stand down t may stall on you

hope this helps
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My sons stopped his 2006 vtx 1300 at the gate to open the gate, bike fell over onto a mulched unpaved ground. On it's left side. But won't start. Any troubleshooting suggestions? Thanks

ok start with switchs kill switch,side stand switch, clutch switch. if the motor is spinning but won't fire clean or replace your plugs, when if tipped over it could have flooded the motor and fouled the plugs.
Let me know if this helps, if not we'll take the next step
Fix it right,Ride it fast
Mark
C.C. Motorsports
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