Saturday, December 11, 2010

Yamaha Grizzly 700

Today I have a 2007 Yamaha Grizzly 700 in the shop for an electrical problem.  The machine would run fine, but it was not keeping a charge in the battery.  I checked out the battery and the main electrical connections.  Everything seemed fine so I moved on to the voltage regulator and stator.  There is really no way to test the regulator, but it is easy to check the output of the stator.  With the engine running you should see 20 to 30 volts ac on the stator leads.  This one showed no voltage. 

When I pulled the engine side cover off it was obvious that the stator was bad.  In the photo you can see burned section on the right.  I did a little looking around on the ATV forums and discovered that these Grizzly 700s frequently burn out the stator at about 4000 miles.  This machine made it to 5500. 



  1. Nice picture! You make mechanical works seem almost easy..

  2. Rick from Ontario Canada Ihave a 2007, 700 griz with 1100 kms. Yamaha rep. just informed me that my stator is not working. Obviously poor engineering from the get go.

  3. When they replace it, see if you can get a new engine side cover. Apparently Yamaha has a new cover available that has an oil line to supply more oil to the stator.

    Is the dealer going to cover it under warrenty?

  4. I have a 2007 Yamaha Grizzly 700 and I replaced the stator 3 times. Yamaha never notified customers that there was a known issue with the stator burning out. Finally, they recently (at my expense) replaced the original side cover with one that has an oil line to the stator. I've only had it back 6 weeks and already it is showing the tell tale signs that I am going to have a problem again - difficulty starting, intermittent misfiring, backfiring and stalling. I am disgusted with this ATV and with Yamaha. What a lousy way to treat their customers.

  5. can anyone tell me whier I can buy this side cover online,i just burned up my second stator.