Quantcast
Jump to content

will 2008 yfz450 run with battery disconnected


go2glamis

Recommended Posts

i have gone through two brand new battery in two rides it starts and runs great then with no warning it just dies. the battery wont charge after. it shorts out and I have to replace it. my question is should the bike run with the battery disconnected. I have a new battery in now and changed the rectifier and when I take the cable loose it dies. is this normal

Link to comment
Share on other sites

Hey @go2glamis welcome to Quadcrazy. I would check your stator coil.   It could be over charging the system. Or not charging at all.   You need to see what voltage you have coming from the stator as well as do an ohms test on it.   The engine should run with the battery disconnected, the lights and accessories would not work properly and may shut the engine down if you were to turn them on due to a heavy draw but the engine should run with the battery disconnected. 

 

Link to comment
Share on other sites

Here a few pages from the manual. It’s not the same year but should be close enough if not the same.  

I would also start the bike up and put a tester on the battery and see how much voltage your getting at the battery.   As your checking rev the engine a little and see if it changes. Are you handy with an electrical tester ? 

 

 

2AC94B00-B50C-4A64-9391-9BBB3B1386FF.jpeg

68C80E39-A450-4690-A399-4B5167D3751D.jpeg

Link to comment
Share on other sites

  • 2 weeks later...
  • 2 weeks later...

OK new stator is in i can disconnect battery now and the engine still runs so definitely the stator was bad. now i was hoping that would solve my other problems to but didn't.  i don't ride at night much but my headlights don't work and i can only start the bike with the clutch pulled in (wasn't this way new) the tail and brake light work. is there a fuse or relay for these? i changed the neutral sensor before but didn't help 

i can rebuild or troubleshoot almost any engine but am horrible at electrical     

Link to comment
Share on other sites

As far as the starting the bike with the clutch pulled in thats normal. Most likely solved that with the neutral sensor.  You may have never knew it but that’s how it works.   As far as head lights that can be traced back to the power source.  Either a bad connection or fuse.  Pull the connections at the lights and test for voltage. There should be three wires on your headlight.  One is a ground two others are high and low beam.  Start there and check for power with the head light switch on obviously. 

Link to comment
Share on other sites

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.

  • Similar Forum Topics

    • By huntindog
      I am in the process of puting it back together after replacing the DPS gearbox.
      The manual I have states that it will need to be flashed by a dealer. Is this still true?
      Also , I have a mystery bolt That I cannot remember where it goes. M6x 70 or so.  Hex head with a flat washer.I will try to attach a pic.
      Pic is no go for now....Cox issue I will try again later
      TIA
    • By quadcrazy
      Pretty cool modification for all you 3-wheeler enthusiasts! 
      CboysTV - "In today’s video, we build an electric 3 wheeler out of an E-bike pro. We also take our sandrail mudding and later try and find the love of our friend Gavins life by taking him speed dating."
       
    • By ForumIdiot
      Hi, Im dudeman, Trying to get 10 post just to download a pdf. (By the way, how does this not junk the forum up with random post of useless info just to get a download?)
    • By exalrod
      Hello All !
      I am looking for a service manual and wiring diagram for a 2005 50cc Polaris Predator 4 wheeler.
      Could anyone help with this?
    • By pitts
      Just joined so I can download a manual and In the process of making my 10 posts.
×
×
  • Create New...