Rider battery problems

[joeclark]

My Craftsman rider has a Vortex 22hp motor. It won't charge the battery. I have replaced the battery and it still drains it while in use. Help!

 

[ILENGINE]

Most likely either a bad regulator/rectifier or bad alternator.

 

[joeclark]

how do I narrow it down?

 

[reynoldston]

how do I narrow it down?

Was I recall your alternator puts out AC voltage to your regulator/rectifier which should put 14 DC volage to your battery.

 

[ILENGINE]

Will need a meter to check output. Make sure you have battery voltage to the regulator. If so then unplug the wires coming from alternator. Set meter at AC volts, insert one lead to each wire to alternator, and start engine, put to full throttle and AC output should be about 28 volts. If both test are within specification then replace regulator. If voltage from alternator is low, replace alternator. If you don't have battery voltage at the regulator then find out why.