If it isn't cranking, combined with the gradual loss of power, a failed charging system is the best suspect. Charge the battery at a slow rate for an hour, then try to start the engine. If the engine runs, measure the battery voltage with an inexpensive digital voltmeter. You must find between 13.75 and 14.7 volts. If it is low, suspect the generator, but there are a couple more tests we should do before you replace it.
Friday, December 9th, 2016 AT 7:18 PM