How to set timing on 2005 polaris 330 magnum atv

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could be a bad front differential 500 on ebay
or possibly related to the no pwer to ins cluster.

fix the cluster first and see what happens.
red wire for power to the cluster wiring harness and connectors

could be disconnected or unplugged or rusted connection causing both issues

I take help from online websites that have this service like helping in repair some like reliable-store have instant help.. others are a bit slow which I don 't prefer... rest is up to u.. U can also get free manuals

replace the faulty fan relay or check for a problem wire from the ignition to the sensor to the relay

its more than likely under the seat...

If you need further help, reach me via phone at https://www.6ya.com/expert/allen_b068623c5003aa4b

Start at a turn and a half out.

Have you checked the fuse terminals coming off the battery there is a fuse some times it is a bad ground make sure battery is charged

If I remember right it does the little black box (not the CDI box) the 330 I replaced the control box on once i replaced the box the speedo did light up again been along time ago but I think if you repalce the control box it will fix your problem

If you remove the Driver side palstic panel, there is a Black Pouch attached to the black wire conduit thatt you have to cut to see the 20 AMP fuse (be careful so taht you do not cut the red wires). I just did mine. You can buy it online on Amazon. Good luck.

Ray