My friend just bought a 2000 Sportsman 335 in which the 4WD and the speedometer does not work. I just read this could be solved by replacing the speedo but don't want to spend $200 to find out if that is the fix. Is there anyway of testing it? Or if anyone else has any ideas.... (BTW all the bulbs are bad) If someone could send me a wiring diagram that may help too.

Please email me here.

 

And I also noticed the fan comes on as soon as you turn the key on even when cold. Is this normal?

 

The Fan can be checked easily by seeing if someone has overridden the switch just look at the wiring that should comes from the temperature sensor. I forget on the air cooled where it is located exactley.

If the speedo is the electronic speedo then odds are that you have a hall effect sensor bad at the right front wheel. Note this will also keep the all wheel drive from engaging if the speedo is not working.

Dang I hate not remembering what is on a particular model but do hope this information helps you..

 

After doing further research online and talking with a couple of Polaris service techs my conclusions are:

The voltage regulator went bad which fried all the bulbs along with the speedometer unit. Since the speedometer unit is fried (which most electonics run through/ or is controled by the unit) this is causing the 4wd not to work along with the fan defaulting to on.

The battery is only getting about 8 volts when running....if I disconnect the battery voltage is at about 12V at idle but can spike to 25 volts at high RPM's....this can do some damage! So I belive the charging system is working but the bad regulator is causing the battery not to charge.

These are all just speculation until the new parts come in but any more thoughts on this are appreciated.

 

Have a load test done on the battery. If the battery is fried, which it sounds like it is, then it is very common for the bulbs to burn out. The voltage regulator needs to have a good battery to work properly.

 

So is it possible JUST the battery is fried and NOT the regulator? I don't want to replace the battery and fry it because the regualtor is bad. Is there a way to test the regulator?

 

Replaced the battery today. Voltage is at between 12 and 13 volts at idle (depending on lights, fan, etc.) When I raise the RPM's the voltage drops by about half a volt. Does this mean the charging system is bad or would a bad regulator be causing this?

 

IsItFast, if you would like the trouble shooting section from the Polaris manual give me you email address on private messaging and I'll send it to you.
My manual is for a 500 HO but should be similar.
Let me know.

 

Thanks Traildog..... email link I would appreciate it....the manual is on order.

 

IsItFast, there should be 3 pages and they are on there way.