Clean the handlebar mounted switch. The contacts will get dirty and cause issues. Commonly known issue and easy free fix.
Contact the guys at 501 Parts.com Yamaha 4wd System Parts and Repair they live and breathe this stuff.Anyone? I'm going to be reassembling soon and so far I've drawn a blank.
Sorry guys, I been out of pocket for while. Tasr12, did you get this fixed? I may have spoken to you on the phone? Let us know if you still need help.I am trying to get an old Grizzly 450 back up and running well. It is currently stuck in 4wd. I have stripped it down and after thinking it was the servo that was broken on the front diff took that off.
Opened it up and cleaned it out then re-assembled. On plugging back in the servo operated once, when the 4wd switch was pressed but then doesn't move again. My initial excitement at it working was shortlived as it only works once. I've removed it - reset the innerds a number of times and same deal, power on press the 4wd and the servo moves....but won't move back.
It is obviously getting power but any advice on the issue would be gratefully received as I am now stuck!
Thanks in advance.
It wasn't me on the phone I'm afraid. I'm in the military and have been away so haven't had a chance yet. That said - I'm pretty stuck so at this rate I'm reassembling with no solution.Sorry guys, I been out of pocket for while. Tasr12, did you get this fixed? I may have spoken to you on the phone? Let us know if you still need help.
Oleblue22,Same here brother (Air Force), thank you for your service. You said the front servo broke off? Can you give more details? Also, are you sure it's an 02? Does it have diff lock? Parts fiche shows 400 kodiak in 02, those didn't have diff lock so a few things would be different. You cleaned and tested the switch already. The servo would be the next thing to check. Pull it off and test it with two c batteries. Make sure it turns all the way one way and back the other. If that tests good and if it does have diff lock, there are two black omron relays and a white relay that control the 4wd. You need to test those as well, next would be to give your wiring a good check over. It sounds like the bike may have sit for a while? Wiring problems are quite common, especially if it sit somewhere that mice could get to it. You can see videos on testing relays, servo, basically everything is at the link in my signature. Here it is, just scroll to the bottom and you'll see all the videos. See what you find, and let us know some more details and we can get you fixed up!
Troubleshooting ? 501 Parts.com Yamaha 4wd System Parts and Repair