Quantcast
Jump to content

Moto 4 starter clutch issues

teull

By teull
in Yamaha ATV Forum

 Share

Recommended Posts

teull Newbie

teull

Posted
Posted

Hi all, I have an 86 motor 4 that has starter clutch issues. (YFM225)

Because I cant afford to put much money into this old machine, I hope to get some guidance before spending more. (already spent too much!)

I have replaced the starter clutch multiple times with used ones that are supposedly good. Each time it fixes the problem for a short time, and then it returns. Sometimes I have noticed the socket head cap screws have loosened. I clean and re-assemble using removable locktite and that seems to help, but still issues with the clutch itself.

Any suggestions?

Questions, is it maybe the small springs behind the rollers are weak?

Regarding the surface on the flywheel that the rollers touch. I have noticed that most of the flywheels I have used do have small wear marks on them. I have smoothed them out using a small stone to the point you can barely feel them. Does this surface need to be perfect?

Are clutches and flywheels matched. It seems that depending on which flywheel I use, the timing can vary slightly like its not quite firing at the right time, hard to start, etc. My theory is that there must be slight variances in the keyway location between flywheels. Is my theory correct?

Any suggestions will be much appreciated.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing


  • Similar Forum Topics

    • logray
      Looking for Quadrunner Flywheel Starter Clutch Gear race diameter
      By logray
      Hi all, 

      I am wondering if any of you have a Clutch Starter gear from a 1988 era quadrunner 250 sitting around that you could get me a precise measurement of the outer diameter of the race the sprag engages onto, for me? I need to machine a damaged race down and install a hardened sleeve and need that measurement (it's on a different gear than the OEM one, so I can't buy and use a OEM gear). 

    • HoldenBoy
      Starter not staying engaged while cranking
      By HoldenBoy
      Hi all,
      Looking for some help on a starter/bendix issue. Can Am outlander 450 2017. While cranking to start, the starter spins and engages into the ring gear. After a few seconds the bendix retracts while still spinning and there is no damaged teeth on the drive pulley.
    • crankin
      Starter circuit cut out relay 1997 Yamaha Big Bear 350 4x4
      By crankin
      I have a 1997 Yamaha Big Bear 350 4x4. It used to start right up. Then all of a sudden it wouldn't crank. I have a schematic for it so I started tracing the problem. I had no power at the starter solenoid. According to the schematic the power comes from the neutral switch and through the starter circuit cut out relay. I cannot locate the cut out relay on this machine.. If I apply power to the relay it will crank with the start button.
      The neutral switch is hard to get to with all the brackets on this thing. I did find out from all my research that if I apply the rear brake lever it will start.
      Does anybody know if the cut out relay exists and where it might be found?
    • HeWasRidinDirty
      2004 DVX 400 fuel issues
      By HeWasRidinDirty
      I rebuilt the carb on said machine. When I hook up the auxiliary gas tank it runs fine and everything is cool. When I put the fuel tank on and hooked up the lines, it completely flooded the cylinder and even about an inch of fuel in the air box. I'm pretty sure that it comes from the little hose on the petcock and hooks to the top of the carb. WTH is that even for? I mean the thing runs fine on the auxiliary tank, so idk And on the petcock when it's in the "on" position, I get no fuel. The petcock from the bike I took it apart and checked out how it operates. The sharpie marks indicate how it really works. Now the other petcock w/o the sharpie marks is an old one that was leaking that I removed from a Polaris quad. It's exactly the same thing, except the small hose and nipple have been removed. I'm so confused, LOL
       

       
    • jeffrocdx
      2002 Polaris 400 Sportsman Shift Indicator Issues
      By jeffrocdx
      I'm working on a 2002 Polaris Sportsman 400 with shift indicator problems. The indicator panel only will show Neutral and Reverse. If it's in High or Low, the indicator will show "R".
      I have replaced the three position indicator switch on the transmission. There is also a two position switch on the tranny that I didn't replace. If anyone is familiar with this problem, please let me know what I need to do. Any help is greatly appreciated!

COMMUNITY SECTIONS

ATV FORUMS

QUADCRAZY MEMBERSHIP

Be a part of best online community of ATV riders and join thousands of people who love ATVs! Share your ATV photos, videos, ATV rides, get help with your ATV and more. Not a member?

SIGN UP TODAY

ADVERTISE WITH US

FOLLOW US ON

  • Automotive Webmaster
×
×
  • Create New...