How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Curtis B. Your Own Question
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28685
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
Type Your Small Engine Question Here...
Curtis B. is online now
A new question is answered every 9 seconds

I have a gravely zero turn rider with a 21hp Kawasaki engine.

Customer Question

I have a gravely zero turn rider with a 21hp Kawasaki engine. The mower is not recharging the battery when in use. What could the problem be
Submitted: 2 years ago.
Category: Small Engine
Expert:  Curtis B. replied 2 years ago.
Welcome to JUST ANSWER small engines, let me try to help you !! Do you have a voltmeter to test with? The stator/alternator coil is under the flywheel of the engine, and has two wires that go to a voltage regulator/rectifier. The rectifier takes the AC volts and changes it to DC volts. This is what charges the battery.
Customer: replied 2 years ago.
do I need to take the engine apart to access this
Expert:  Curtis B. replied 2 years ago.
No, all you need to do is the tests at the voltage regulator on the side of the engine. With voltmeter set on AC volts, and harness unplugged from the regulator, run engine at speed, while probing the two stator wires, read the meter, looking for at least 28 volts AC. If it is there, stator is good. The plug harness back to regulator, set meter on DC volts, and with black lead to ground, use red lead to probe the output from the regulator, it should read 1/2 of the stator voltage in DC volts, or around 14 volts. It will always read battery voltage, but has to be above battery voltage to charge the battery.