I have a polaris magnum 425 new spark plug new coil and new stater but theres no spark what could be wrong

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

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.

try cranking it with your hand completely blocking the carb intake for a few cranks. that sometimes helps blow out the passages.

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.

maybe check ground wire(black wire)is tight

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...

It might be leaking gasket .....Goodluck.._)

Trying to get the lights working on my 1997 2×4 400 polaris