Quantcast
Jump to content

Recommended Posts

Posted

I hav a 2006 Yamaha Bruin 250. It was given to me in pieces(engine) got the head back on and I have a few problems.

after installing the cam gear and chain I turn the engine over back to the timing mark and my mark on the gear is 180 out. 

So I reset the timing and thinking I needed to put the tensioner in and I can’t install it. 

And now some how the transmission is in gear and can’t get it back in neutral. 

 

Any ideas?

thanks in advance

Posted
20 hours ago, God Got Good said:

Does this help?

 

Update. Got it back in neutral. Think I will pull the stator to reset the timing that way. Still curious about the tensioner tho.

 

yes after some research I found that. Thank you.

 

so now I have to get to the crank because I don’t understand why when I install the timing chain with cam and crank at tdc when I turn the engine over by hand back to the “T” I’m 180 out at that point

Posted (edited)

If you have the piston at TDC you should install the cam with the lobes facing down. That will put you at TDC on the compression stroke. Install the cam sprocket into the chain with the marks lining up to whatever they should line up with (different by brand), and bolt the sprocket onto the cam. Then spin it over counter-clockwise by hand and the marks should still line up. This is for all 4 strokes.

Rob

Edited by rdlsz24
  • Like 1
Posted

Yes I had the piston at tdc with the “T” in the hole with the plug removed. I spun the cam over so when the sprocket is installed the pin and the line on the gear is pointing to (12 O’ clock) towards the point on the head. Everything is at tdc. 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Similar Forum Topics

    • By Need-help-with-quads
      So my moto 4 is smoking white smoke and when I go to first gear and get about half throttle there’s no power and it sounds like it’s bogging
    • By PvtTarget
      Will not go into 1st but if ya go past will go into maybe next gear. Will not shift into reverse. I have see others say that the shift cam assembly dowel worn or fall out. How do I get to this? Do I need to break case in half?
       
      thanks for your help 
    • By DaleJAM
      so i cant read the vin clearly but i have added some pictures, hopefully someone sees it correctly. took a picture of what it looks like, they painted it Green It is underside a SKY BLUE original. has one spark plug . 3 relays in the back + rectifier. has one relay in the front. has cdi in the front three plugs off it. 
      If you need more info or pictures please ask. 
      the wire harness is trashed i want to rewire it but correctly. 






    • By Kaz
      Troubleshooting a no spark issue, was running OK, maybe a little rich, turned it off, now no spark. I've checked/ohmed out the main key switch, the start/stop switch, neutral switch, brake switch - all good. It will crank the starter, but no spark with the starter or when I try the pull start. I've checked all fuses and diodes. Swapped battery. New plug. New coil. Swapped in a used CDI - no help. Traced, removed, cleaned, reattached all grounds. Removed things like my winch from the circuits to be sure a bad relay or something was dragging it down. When testing voltages, the orange wire going from the CDI to the ignition coil shows no/very low voltage-shouldn't it have 12V on it? Sometimes I get a very weak, intermittent glow on my spark tester, but not enough to fire the plug. I've checked continuity on just about all wires in the harness. Checked/cleaned/lubed w dielectric grease- all connections, redid a few that looked old/dirty. I've checked the stator resistances, all good, but have a stator and rectifier ordered anyway, will arrive Sunday. I verified that the rectifier has a voltage output back to charge the battery while cranking - 10.5-11V, low, but expected while starter is engaged. What else can I check as part of troubleshooting? I have a Haines service manual, but the 1999 350 4x4 seems to be an odd model, there isn't an exact electrical diagram for it, but found one for another year that has all the same number of wires and same color wires, so I've referenced that. Any hints, tips or advice would be appreciated! Thanks!
    • By qcm413
      Hi,
      Thanks for a newbie on this site !
      i have grinding noise in my front differential. the front right wheel is turning and the left is try to turn but no movement and make sound like a gear broken. somebody have any idea ? not enough oil in diff ?
      thank
×
×
  • Create New...