I have a new BST CV 34 that was jetted out for a 330 trail boss. I opened it up to swap out the jets to a 425 setup and decided to have a look at the numbers and taper on the jet needle. The needle jet is a "P-4" with 10 holes while the 425’s needle jet is the P-8 with 6 holes. I have spent the better part of a full day trying to ID this P-4 and what it is supposed to go in because the listings I have found say that the P-8 goes into both carb setups as mentioned. Now the jet needles are way different as well. The taper on the P-4’s jet needle is almost non existent while the taper on the P-8 is clear to see. So the big question is do the extra 4 holes in the P-4 needle jet combined with the all but straight jet needle compensate for the fuel flow versus the P-8’s design as mentioned making them equal in overall fuel flow? :hmmm:

Hello all,

I have a 2000 Magnum 4×4 that the oil cooler fan will not shut off. I have done some research and done some basic electrical testing using my fluke 87V meter. I have checked the resistance for the thermistor with it unplugged and got a reading of 1.307 k ohms. I have also checked it with key on engine not running and both yellow wires plugged in to the thermistor switch and got a reading of 312 k ohms. I contacted Polaris near my home and the shop foreman looked it up and at 77 degress f the resistance value should be 100 k ohms. I went to work and found a 100 k ohm resistor and tried plugging it in place of the thermistor and the fan still runs and light stays on. I also checked the ground coming out of the thermistor switch (with it unplugged) to frame ground and got an average reading of .2 ohms (which is to be expected I assume). I am completely lost with this problem. My neighbor has a 325 trail boss year model 2000 that is pretty well the same set up as mine. I guess I will try some testing on his unit since his works fine. Any help on this problem would be greatly appreciated. Thanks

Hello all,

I have a 2000 Magnum 4×4 that the oil cooler fan will not shut off. I have done some research and done some basic electrical testing using my fluke 87V meter. I have checked the resistance for the thermistor with it unplugged and got a reading of 1.307 k ohms. I have also checked it with key on engine not running and both yellow wires plugged in to the thermistor switch and got a reading of 312 k ohms. I contacted Polaris near my home and the shop foreman looked it up and at 77 degress f the resistance value should be 100 k ohms. I went to work and found a 100 k ohm resistor and tried plugging it in place of the thermistor and the fan still runs and light stays on. I also checked the ground coming out of the thermistor switch (with it unplugged) to frame ground and got an average reading of .2 ohms (which is to be expected I assume). I am completely lost with this problem. My neighbor has a 325 trail boss year model 2000 that is pretty well the same set up as mine. I guess I will try some testing on his unit since his works fine. Any help on this problem would be greatly appreciated. Thanks

Hello all,

I have a 2000 Magnum 4×4 that the oil cooler fan will not shut off. I have done some research and done some basic electrical testing using my fluke 87V meter. I have checked the resistance for the thermistor with it unplugged and got a reading of 1.307 k ohms. I have also checked it with key on engine not running and both yellow wires plugged in to the thermistor switch and got a reading of 312 k ohms. I contacted Polaris near my home and the shop foreman looked it up and at 77 degress f the resistance value should be 100 k ohms. I went to work and found a 100 k ohm resistor and tried plugging it in place of the thermistor and the fan still runs and light stays on. I also checked the ground coming out of the thermistor switch (with it unplugged) to frame ground and got an average reading of .2 ohms (which is to be expected I assume). I am completely lost with this problem. My neighbor has a 325 trail boss year model 2000 that is pretty well the same set up as mine. I guess I will try some testing on his unit since his works fine. Any help on this problem would be greatly appreciated. Thanks

I am getting ready to do rear brakes on my quad 2000 325. I know on my motorcycle to swap out pads I can just pull pin slide out old slid in new. Is this the same concept with the quad or do I have to pull wheel off and take of caliper. Please let me know before I tear into it. Thanks.

I am getting ready to do rear brakes on my quad 2000 325. I know on my motorcycle to swap out pads I can just pull pin slide out old slid in new. Is this the same concept with the quad or do I have to pull wheel off and take of caliper. Please let me know before I tear into it. Thanks.

Hello, posting for a friend with 2000 325 Magnum 4×4.He needs the rear axle retaining ring and having trouble getting one because it is discontinued.Part# is 7710482.Any help would be appreciated.

Hey guys, new the to place here but here a couple weeks ago I got a very clean and nice 96 magnum 425 4×4. Took it on two good rides with a new battery soon as I got the wheeler. First ride went without a hitch, the second ride, lost all battery power. Turns out its not charging of course. So I dug on the good ol internet for testing. I read that the normal stator voltage is suppose to be 30-40v AC current from the stator, I get 230. and yes, 230v according to my meter (Snap On) that I use often during my day job of being a heavy diesel tech. I checked the trigger coil which is suppose to be 97 ohms, I get 103. all yellow wires are OL (no continuity) to ground and less than an ohm of resistance… batter voltage stays at 12.5 no matter the rpm. also during the second ride when I figured this out, It would slightly charge the battery for a little bit but then eventually nothing. If I reved it high enough, the 4wd worked. Now I have no charging from the bike itself and everything still works if I charge the battery with a tender. I also replaced the regulator just to eliminate it but I did get an ebay one. I did see 14.2v at the battery for 2 seconds at start up when I changed it then it went to 12.5. Can the stator over volt? such as my 230v reading, if that’s the case, It looks like I need a stator and another regulator. Thanks guys

Thanks to those who helped me with my issues on my recent purchase of the Magnum 330, especially reynoldston.
I really like my Magnum… I didn’t even get to ride it, before I tried changing the oil, and cracked the block, but I did the jb weld thing. I also right away changed out my oil lines, because of weeping oil – I don’t think I really needed to, but gave me peace of mind.
My Magnum 330 is only a 2×4, but does everything I need it to, i.e.. trail riding, and pulling a small trailer, and is plenty fast enough (45 mph) for going through the woods – don’t need to wrap myself or the atv around a tree.

After a few times riding, the jb weld is holding up and engine purrs like a kitten.

The only issue I have, which is not a big deal, is the shifting from p/n/l/h, it sometimes goes right past or sticks a bit…. do others have the same problem.. any fix? – not a big issue, and I do get it after playing around for a few seconds, but it is a bit aggravating.

I have a 425 that I am rebuilding. Been in the family since new sat in the barn for 3 years. It is running however when I give it some fuel it starts backfiring and bogging down. Second while it is running a slapping noise comes from the clutch area. Where do I begin to trouble shoot the two items. Any help would be greatly appreciated.