New Polaris pb4-60 won’t run, have checked wiring, now what?

The 20 Amp fuse (diagram shows only one 20A) feeds ignition coil and fuel pump circuits. With a current probe measure the two circuits separately to identify which is most probable cause.

Check battery voltage with engine running. It should be well over 13 VDC.

If it will run for a few minutes, you might get by with a touch test of the ignition coil and fuel pump. If one is markedly hot, the heat likely identifies the culprit. But a current probe is the tool necessary if you want to avoid part$ swapping.

Recommend fuel pressure check also. Eccessively high pressure could be problematic and low pressure would further implicate fuel pump.

Test the compression using a compression tester.
My guess a valve is stuck closed.
A compression test will show this.

wired wrong to injectors ? timed wrong maybe

check conections on new parts just had that deal new cdi had one wire that pushed out just enough to lose contact. sounds strange but it happens.

Did You checked the weights and the moving mechanism of the sheave ? Sometimes the weights or sheave are worn out or the mechanism stucks .

you have a short circuit on a positive wire. inspect your fuse box and your wiring harness for any visual damage

I have a 2001 polaris sportsman 500 H.O. I have replaced the fan and the thermial fan switch,and checked the thermostat. Everything is either new or works there are no bubles in the coolant when its running I am running out of opptions . If I unplug the thermal fan switch and plug a jumper wire in the fan will run. I thought the new switch was bad and I tested it and it is good

I have seen this on a few machines. Start tracing wires. Ground wire from the key is the first on Id check. Grounds on these machines go bad from vibration and rough terrain. Not to mention silt in the water.

If I try and pull start it and it just makes noises tried to jump start it and dose nothing what could it be I bought a new battery but no way of checking if it's charged or not

Look at your Magneto Flywheel , sounds it jammed .