General Chat

Hello guys, I could use some help diagnosing my problem on my fourwheeler.    I have it completely off the ground and when I hit the four wheel switch the light comes on in the dash but the front wheels don't turn. The axle coming out of the engine does turn. I also don't hear anything engage when I flip the switch.  I'm not sure where I should start to look for the problem.      I replaced one of the cv axles because the old one was locked up and someone just cut it so they could still ride it. Both cv axles pivot fine now. Maybe when the old cv axle locked up  it damaged the shift motor? What do you guys recommend I check out?  I appreciate any help! Thanks

I’ve got a 2007 400 EX I purchased from an individual several years ago and have been slowly rebuilding it.  The engine was seized up when I bought it and I found out later that several of the gears were stripped out of the transmission.  Needless to say, the engine was completely dismantled.  Replaced three gears in the transmission and crank bearings in the bottom end.  Had the crank checked out and it was surprisingly in good shape.  Took the oil pump apart, cleaned it well and made sure it functioned as it should.  Of course the cylinder was bored and a new piston and rings installed.  The timing chain didn’t look bad but replaced it anyhow.  Got the head torqued down to spec in a cross pattern.  Got it set to TDC and placed the cam lobes down toward the head with the marks on the cam sprocket set correctly.  Torqued the valve cover to spec in a cross pattern and then proceeded to replace the tappet screws.  That’s when things went bad.  Set the gaps on the intake side with no problem and then the exhaust on the left side.  Then I got to the right side and the problem showed up.  There is absolutely no play even without a tappet screw.  I pulled out all the other tappets and removed the valve cover for an inspection.  From what I can see, everything looks fine and doesn’t appear to be bent.  As soon as I tried to put the valve cover back on, the right exhaust valve clearance was completely gone by the time the valve cover bolts were hand tight.  I can take a foreman engine apart from top to bottom with no problems and have rebuilt numerous ones, but this is my first time with an overhead cam and I have absolutely no idea what could be wrong.  Guess it doesn’t help that the engine was seized when I got it so I don’t have a good baseline of what I was dealing with to start with.  Don’t know if I screwed up or if it was already in that condition.  Any help would be greatly appreciated!

Hi Mike I’m sure I can get you taken care of. I’ll send my contact information to your message box and we can sort it out. -AKATV 

I need to get with AKATV. Have a 00 foreman 450 that needs lcd work. Thanks Mike

Sorry for the late reply. I’m currently out of state handling a family emergency so if I’m a little slow to answer it’s because I’m checking my phone about once a day or so. I should be back on track here fully within about three weeks -AKATV