Quantcast
Jump to content

Little help please

Goose1963

By Goose1963
in Yamaha ATV Forum

 Share

Recommended Posts

Goose1963 Rookie

Goose1963

Posted
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

Goose1963 Rookie

Goose1963

Posted
  • Author
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

rdlsz24 Rookie

rdlsz24

Posted
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
Goose1963 Rookie

Goose1963

Posted
  • Author
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. 

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

  • Popular Now

  • Similar Forum Topics

    • Yamahahahaha
      Chain guard solution 1987 Quadrunner LT230E
      By Yamahahahaha
      I'm in the middle of repairing damage from the chain coming off of this from the previous owner. (I learned this is somewhat common on these for various reasons.)
      What are you guys using to either help keep the chain correct and on the sprocket or guarding your engine in the case that it comes off / breaks?
      Is there an upgraded guard that can bolt around the sprocket in replacement of the currently broken OEM alluminum?

    • hengstserepair
      2000 Yamaha Breeze 125 slips in Forwards, runs fine in reverse
      By hengstserepair
      Howdy ya'll. I am working ona 2000 Yamaha Breeze 125. It was in rought shape when I received it and I am working through issues as they pop up. The quad had been sitting for years. I was able to get her running again, but I need your help with the following issue:
      I don't trust the transmission yet and I don't want to make problems any worse. So, I haven't pushed things hard at all. Low rpms, less than 5mph in reverse.

      Nuetral: Runs as expected
      Reverse: She seems to be driving fine at slow speeds. Going into reverse at idle is fine, coming out of reverse back into neutral won't work (the shifter is just stuck). As soon as I turn off the quad, I am able to shift around without any issue.
      Forward: It slips. It seems to only transfer power to the wheels on a smooth surface and going slightly downhill. When shifting into forward at idle, there is a clacking sounds during the transition. Shifting back to nuetral works just fine.

      Other Notable Symptoms: There was old oil in the vbelt and when I was tuning the carb, it starting blowing out of the CVT cooling vent at the front of the quad. Made quite a mess. There is positive crankcase pressure due to piston blowby, that I have not decided whether or not I am going to fix (customer budget dependant).  Since the oil was old, much darker than the new oil that is in the crankcase, I am thinking it seeped past a bad seal while it was sitting for years. The oil that was in it when I first got it had gas in it.

      Thoughts: I am thinking maybe there is an issue with the clutch. I worry about the old oil intermingling with the dry centrifugal clutch. I was thinking my next step would be to take the cover off of the clutch and inspect it.

      Let me know what you all think. Any advice and ideas is greatly appreciated. This is only the 3rd quad I have worked on and I have a lot to learn.

      Lorne
    • Rockbottom
      2008 Yamaha Big Bear 400 will not start
      By Rockbottom
      2008 400 big bear was running now will not start
      have power to relay, in neutral, press start have power to starter but nothing happens starter does not turn
      i have good ground at battery to frame and added ground from wire harness to frame beside batter/ frame ground
      blue white wire to cdi has power with key on
      I believe the neutral lock out is working since is was before i shut it down
      if i put  it in gear and hit the start button with key on the relay does not click or send power the starter
      The 3 wires at the relay have power with key on
      What should i test next?
      thanks ahead
    • Mister907
      2000 Yamaha big bear 400 won’t start
      By Mister907
      Hi guys, I have a 2004 big bear 400. Last winter while plowing the driveway, I heard a loud pop from the left side of the engine. It continued to run as I looked for leaky fluid, but then died shortly after backing it up and won’t start now. The oil light comes on when I try to start it, no noise or anything else. 
      No blown fuses that I can find.
    • jeffinotown
      2007 Yamaha Big Bear IRS Short
      By jeffinotown
      Hey guys and gals. I've been working on my friends 2007 big bear IRS. Unfortunately after 3 different people got their hands on it and only made things worse every time.  After months of finding just crazy problems everywhere. I'm finally at the point we're its almost 100% !!! But I'm getting a short somewhere between the 4xW switch I believe. I managed to by searching the internet like a  fiend, got my hands on an official Yamaha wire harness for the year and make. But I don't have the numbered component list and to be honest. After hours of going through and making everything so it's  easy to reference. If anyone has a picture of the referenced components. I would be forever in your debt. I've spent hours marking up the blown up diagram so it will be easy, for any possible future repairs. Please and thank you. Here's a picture of what i have so far.  Unsealed it in plastic so oil and crap won't spill or get smudged. This damn things worth it's weight in gold.              Thanks Jeff                2007 Yamaha big bear 400 IRS.       YFM40FBW

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...