I recomend synthetic 2-stroke oil , either 32-1 or 40-1 should be fine .As long as you can see it smoke alittle out the tailpipe .
400 polaris sportman has 455cc
On a 2001 Polaris Sportsman 400 4x4 ATV, the fuel filter is typically located in the fuel line, near the fuel tank or along the frame. It may be situated underneath the ATV, making it necessary to raise the vehicle for better access. Always consult the owner's manual for specific details and safety precautions when locating and replacing the fuel filter.
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where is the plug on the 400 4x4 ATV to drain the oil? Isn't the 400 a two stroke? No oil in case.
On a Polaris 400 ATV, the fuel filter is typically located near the fuel tank, often mounted on or around the fuel line. You may need to remove the seat or side panels for better access. It's advisable to consult the owner's manual for the exact location and replacement instructions for your specific model year.
http://www.bikebandit.com/houseofmotorcycles/polaris-atv-sport-400l-w968540-1996/o/m5503
the mechanical seal on the water pump is out
There are no fuses on a polaris ATV.
Diagrams for a Polaris 325 ATV can be located online at Polaris forums. They may also be located in person at dealerships that specialize in the selling of ATVs.
Polaris fuel filters are usually in the fuel line coming from the valve that turns fuel off and on and on the left frame rail . Just follow the fuel line from fuel valve to carb .
The fuel pump is located above the left front tire, mounted on the frame.
Where is the fuel filter for Honda 400 ex