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Odd 4x4. (brute 750)

tx3kgtman2010-08-11 19:26:41 +0000 #1
Ok I've been reading different posts about the 4x4 not ingaging blah blah but my problem is a little different. Driving around the yard , down the road or whatever I can engage and disengage 4x4 with no problem. Yesterday I took it thrue some watery mud and after a while I noticed it was coming out of 4x4. If I watched the dash I could see it go from 4x4 to 2x4 without me touching the button. I would have to switch it back to 2x4 then back to 4x4 and sometimes that wouldn't even work. It just kept poping out of 4 wheel drive. I got it home washed the atv off and let it dry for 3-4 hours and tried it again and it worked fine. I took the acuator off today and it has no water or mud in it at all looks brand new. I tried to test it out by cranking it up, putting it in gear and switching it to 4x4 but I couldn't tell that it was even moving. Is it a real noticeable movement or does it move real slow? What should I check next?

I'm new to this forum and brand new to the brute. I just purchased it 4 days ago used. It's an 08. First Kawasaki I've ever owned. If have the service manual from this site that I've

Been reading over it but this quad is still very new to me and 1,000 times more complex than my Honda 300 lol.

Edit: I tested the actuator again and it is moving. I had to put it in gear and drive it forward or backwards just a foot or two and it moved so the actuator seems to be working fine. There's no water in the actuator and it works so I guess it had to be a plug that is getting wet or something. I wouldn't think it was the switch up top because it works fine until I get it into water.


Polaris4252010-08-11 19:42:10 +0000 #2
Fuse under the seat is probably blown. Look in the little box, there's like 2 or 3 fuses in it, one of the red ones is gonna be blown. Even if it doesnt look blown, replace it and see if it fixes the problem. Also, need to put di-electric grease on all the elctrical connections under there while your at it, i fyou havent already.
tx3kgtman2010-08-11 20:02:20 +0000 #3
Quote:

Originally Posted by Polaris425

Fuse under the seat is probably blown. Look in the little box, there's like 2 or 3 fuses in it, one of the red ones is gonna be blown. Even if it doesnt look blown, replace it and see if it fixes the problem. Also, need to put di-electric grease on all the elctrical connections under there while your at it, i fyou havent already.

Ok I will check that. And about the di-electric grease I'm not sure if the guy I purchased it from did so I'll look into that also.
Polaris4252010-08-11 20:09:26 +0000 #4
Doesnt matter if he did or not, a fresh dab never hurts! Dont forget a little in the spark plug boots too.
tx3kgtman2010-08-11 20:47:39 +0000 #5
so i need to put that grease in every connection i find?
tx3kgtman2010-08-11 21:05:50 +0000 #6
ok i checked all the conections from the front actuator and they are all packed with grease and apear to be fine. I replaced all the fuses in the box. I also changed my front dif fluid and it was really bad milky light brown. Would that have any effect on the 4x4 operation?
MeanGreenMan2010-08-11 21:04:57 +0000 #7
Quote:

Originally Posted by Polaris425

Fuse under the seat is probably blown.

If the fues is blown, the problem would show up ALL THE TIME. The OP sounds like he's having an intermitten problem, especailly after crossing water. However, I still think this migjht be an electrical issue not mechanical.

What's the P/N that is written on the ECU? There are 2 black boxes and it is the bigger of the two.
Polaris4252010-08-11 22:22:11 +0000 #8
Quote:

Originally Posted by MeanGreenMan

If the fues is blown, the problem show up ALL THE TIME. The OP sounds like he's having an intermitten problem, especailly after crossing water. However, I still think this migjht be an electrical issue not mechanical.

What's the P/N that is written on the ECU? There are 2 black boxes and it is the bigger of the two.

Mine was intermittant. Replaced fuse, problem went away.

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