Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Hoe old is the battery? Have you had battery tested? Do you have a voltmeter to test unit? If electric clutch is driving the blades, it should be ok, and not drawing down the battery.
Charging system is not working, do you have a voltmeter to see if it is working? Battery voltage with engine running, should be over 13 volts. If 12 or less, charging system is not charging battery. If not charging, the electric clutch and other electrical will draw battery down.