2000 big bear 400 help... - ATVConnection.com ATV Enthusiast Community

Yamaha Discussions about Yamaha ATVs.

2000 big bear 400 help...

Reply

  #1  
Old 07-14-2018, 01:27 PM
Weekend Warrior
Thread Starter
Join Date: Jul 2018
Posts: 10
Default 2000 big bear 400 help...

Was riding late one evening when my headlight bulbs blew and busted bulbs didnít blow fuse. Few days later it just cuts off like turning the switch off look and it blew ignition fuse tried another and blew it. So come to find out fried CDI replace it and rec/reg and new battery no more fuse blowing but wonít turn over with starter. Jump solenoid and it turns over but no spark at all. Trying to figure out if possibly my stator has burnt up and if that would keep the starter from turning over?
 
Reply With Quote
  #2  
Old 07-15-2018, 02:37 AM
Extreme Pro Rider
Join Date: Oct 2013
Location: Lancaster England
Posts: 3,114
Default

Check the kill switch circuit. Depends on the model, but some cut both spark and power to solenoid when in the kill position.
 
Reply With Quote
  #3  
Old 07-15-2018, 06:44 AM
Weekend Warrior
Thread Starter
Join Date: Jul 2018
Posts: 10
Default

Not sure how to check that circuit. Electrical is not my cup of tea lol. Also what does the motor control unit do itís a black box with a 5 wire pig tail coming out of it next to the battery.
 
Reply With Quote
  #4  
Old 07-16-2018, 03:34 AM
Extreme Pro Rider
Join Date: Oct 2013
Location: Lancaster England
Posts: 3,114
Default

If you are unsure about electrical testing it may be best to send it to a Quad or motorcycle repairer. No point in spending big money on new Stator and CDI and finding it still won't go, then giving it to an expert who finds a broken wire.
 
Reply With Quote
  #5  
Old 07-17-2018, 09:06 AM
Weekend Warrior
Thread Starter
Join Date: Jul 2018
Posts: 10
Default

Thanks merryman. But I feel pretty confident I can fix it myself with a little guidance so I just purchased a clymer servicemanual gonna give it a go when I get the time.
 
Reply With Quote
  #6  
Old 07-20-2018, 03:01 PM
Weekend Warrior
Thread Starter
Join Date: Jul 2018
Posts: 10
Default

well I been messing with some testing and still havenít found the problem
 
Reply With Quote
  #7  
Old 07-21-2018, 03:23 AM
Extreme Pro Rider
Join Date: Oct 2013
Location: Lancaster England
Posts: 3,114
Default

Start with the starter circuit, it is more simple than the ignition system on most machines. Clymer should show you how to test it, or at least what is in the circuit, that needs checking.
 
Reply With Quote
  #8  
Old 07-21-2018, 07:19 PM
Weekend Warrior
Thread Starter
Join Date: Jul 2018
Posts: 10
Default

My clymer just has the wiring diagram for my model but shows starting circuit for the older models. But thanks will check it out.
 
Reply With Quote
  #9  
Old 07-24-2018, 07:23 PM
Weekend Warrior
Thread Starter
Join Date: Jul 2018
Posts: 10
Default

The clymer manual is wrong on some wiring too.
 
Reply With Quote
  #10  
Old 07-25-2018, 02:47 AM
Extreme Pro Rider
Join Date: Oct 2013
Location: Lancaster England
Posts: 3,114
Default

Googled two diagrams, supposed to be for a 2000 Big Bear 400, and one shows the start button connecting the solenoid to earth, t'other shows it connecting to the pos wire from the ignition, so about as different as you can get. Both diagrams show a relay, diode and the solenoid wires going to the CDI, so a fairly complex set up.
 
Reply With Quote
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
netflix1
Yamaha
2
05-28-2014 07:54 AM
bowanna03
Yamaha
0
07-26-2012 06:38 PM
Jeepsterbrad
Yamaha
0
02-15-2008 10:55 AM
justindeters1
Honda
1
04-19-2000 11:38 PM
jaybird
Yamaha
0
08-24-1999 10:43 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: