What do i need to do to replace a starter in my 97

replaced starter and car still won't start and ignition is sometimes hard to turn you think it is the switch or the whole unit. the car is a 1997 nissan sentra.

first unhook the battery, remove the air cleaner box and ducting to the throttle body, you will see the 2 bolts for the top. you will then need to go under the vehicle(make sure the vehicle is properly supported), and you will see the bracket between the engine block and the intake manifold, remove it.the starter wire does not get removed from the starter, it has a connector about 4-5 inches away. disconnect it there. disconnect the battery cable from the starter, remove the last bolt and it will come right out. all in all it takes about 30 minutes. most places will charge a "core charge" on a product like this. dont be suprised, however when you return the old starter you will get your money back. let me know if you need further assistance.

CRAWL UNDER VEHICLE AFTER DISCONNECTING THE BATTERY. FIND STARTER PULL HOT WIRE, MARK WITH TAPE PULL GROUND ALSO MARK, PULL TWO OR THREE BOLTS THAT HOLD STARTER TO ENGINE... REVERSE DIRECTIONS TO REINSTALL.