1995 polaris 425 magnum wont start

Bad starter,replaced one on my grand sons not long ago,battery was weak,got it charged,still would not start,took starter off,it was locked up,they ordered one from Ebay,I installed,started right up,here's a site for a new starter,you can take off and take to Autozone to test to make sure.Also check the cable that goes from starter to the other connection.https://www.ebay.com/itm/STARTER-FOR-POLARIS-MAGNUM-425-4X4-2X4-1995-1996-1997-1998/262663578665?epid=8008132122&hash=item3d27f82429:rk:1:pf:0

you have a reverse safety like on riding mowers with deck engaged push and hold reverser button this link showes where and how it works --against bypassing a safety only video that showes the safety clearly 1995 Polaris Magnum 425 ATV Others Disable Reverse Override Function

Sounds kind of like a vapor lock situation. Your gas cap probably is vented. Be sure that the vent is not covered or clogged.

Fuel starvation (supply or wrong carb or tune) and/or insufficient or poor quality spark.

Make sure the air filter is clean and only test with it connected as it sometimes makes a lot of difference. It could be worth checking the exhaust for blockages.

There is no drain plug for the coolant, you need to remove the lower radiator hose at the radiator to drain the coolant. Make sure you purge the air out of the system after the change.

It has no coolant drain plug, you remove the lower radiator hose at the radiator connections side.

The startr motor is fried or u hav worn cables w alot of resistenc. Fixit bfor car fire

just for fun, while you're cranking it put your hand over the intake of the carb completely covering it and see if your hand gets wet with gas. this might even start it too.

If you are certain the spark plug(s) is in good condition and correctly gapped, and the magneto is working normally, then you may have a fuel system problem. A quick diagnosis of fuel system issues is to spray a shot of starter fluid or WD-40 into the intake through the throttle body. If the engine fires for a bit then quits, it's a fuel system issue. Small engines do not do well with old ethanol-containing fuel. If it's turned yellow, drain it out and replace it, and remove any in the carburetor float bowl also.

Air leaks in the carburetor or intake manifold gasket may also cause hard starting. A sticky carburetor float or float valve is another possibility, especially if the engine was sitting for a long time with ethanol fuel drying out in the float bowl. A dirty air filter will also cause starting issues.

The spark plug is on the left side (shifter) of the head,,..?/ this is August.. if the atv has been sitting the carb may need a qualified professional to clean it again.. Replace the spark plug before you squirt anything in the engine...