how to replace starter

Hello, are you certain the starter motor is the cause of the problem? Other things can cause sluggish starter motor performance - notably, the battery being too low in charge or unable to sustain a load, poor battery cable connections or corrosion. As far as "how" to replace the starter motor, you'll need to do obtain a workshop manual to get the instructions. No one in this forum could post proper instructions - the published data is copyrighted by the manufacturers and manual companies. Try a place like www.alldatadiy.com or Mitchell One -- those are good options for workshop manual information. Good luck!