I installed new tires on my scrambler and now my 4 wheel drive is acting up its noisy and notchy feeling. My old tires were front=23/7/10 rear=22/11/10 and my new ones are front= 23/8/10 rear 22/11/10. Is going from a 7 to a 8 on the fronts my problem? scramblers need one tire size bigger on the front which i have other then a bit wider. thanx TONY
First off you are correct in the front to rear ratio has to be the same as stock.But some brands of tires run different.I would measure the new one to be sure the front are actually 1in taller than the rear. Also check or change your hub fluid.Also check clearance on the inside front(shouldnt be a problem) I have run 8in wide Titan 489s on the front and they worked fine.What brand and style did you get?
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On a website where another guy had this problem, the previous owner told the new owner that he shifted it into 4x4 while in the mud and it is now stuck in AWD. According to Blueline15: "previous owner did a very bad thing. for anyone who doesnt know, remember this example. although you can flip the 4x4 switch while moving, if your back tires are spinning while in 2wd, you can not go into 4x4 or you will cause this problem. just remember this, the flip on the 4x4 the front wheels need to match the rear in wheel speed. so either be moving and not stuck, or come to a complete stop.
what happened is you have rollers in a plastic cage in the front end. when he hit the 4x4 button with the rears spinning, the torque going to the front gearbox while everything was at a stand still that it broke the roller cage.
You're looking at a few hundred dollars at a dealer, depending on how bad."
Your 4 wheel drive may be working, but it is a torque-sensing front
differential for reduced steering effort, that supposedly sends power to the wheel with the most traction. Many owners have found that just the opposite is true. Your problem may mean that the differential is working, but because it doesn't lock up both tires in the front and only one tire is getting all the traction you can't see it work as advertised. The link to the video is great for showing what may be happening. The front differential may be worn out and need to be fixed or it may just be that it is not working as you expected: https://www.youtube.com/watch?v=KF-iD4pmmoA
On my 4 wheeler if I raise the front wheels off the ground and with the 4 wheel drive engaged you should not be able to turn the front tires two revolutions. You need to be more specific as to what you are trying to do because there are other electrical things that can be checked. Like if the 4 wheel drive will not engage. Previous test is only to see if the front end is engaged in 4 wheel drive.
Secrets of Starter Motor and Drive Replacement for 1999 Polaris Scrambler 400 4 X 4
1. Yes you must access both sides of the starter to remove it. Remove clutch covers on left side of machine and covers and pull starter cover on right side of machine.
2. There are two bolts on the clutch pulley side and two bolts under the pull start cover that must be removed to free the starter/starter drive. The starter and drive must be removed and installed from the left (clutch pulley) side together. That's different than the 500.
3. You only need to remove the positive lead from the battery and starter motor post. The starter is grounded by being bolted to frame.
4. The starter is at the bottom of the motor, not like the 500 at all which is accessed through the air box. You can find it by removing the plastic skid plate on the bottom of the engine. You can prop up two wheels on the left side so the machine is 45 degrees tipped up onto both right wheels. Make sure the fuel and oil caps are screwed in tight.
5. It is difficult, but you can remove the two bolts on the left side without removing the actual drive and driven clutches. The clutch cover must be removed though.
6. Under the pull start cover on the right side you can remove the two bolts holding the starter in. One of them is about 4" long and goes through the actual starter motor. It's tough to remove without bending because your u joint partially blocks it.
7. Now you can wiggle the starter and drive out from the left side through the slot in the frame.
8. Decision before you start: How much do I pay for parts? The range is from $50 - $150. Is the expensive part better? This is a difficult repair. Can I really do it myself? If not, what am I willing to pay for labor? I did it for $50, but if it goes out again I will try to find someone who will do the labor for $150 or less. I might go for the more expensive parts if the cheaper ones don't hold out.