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Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 10972
Experience:  40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
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Toyota 7HP generator with about 350 hrs of use, but has not

Customer Question

Toyota 7HP generator with about 350 hrs of use, but has not been used in several months-
-- Will not start, but just buzzes when the starter button is pressed.
-- With a battery charger attached for a couple of hours, it still just buzzes when the
starter button is pressed.
Same boat with a GM V8 engine, probably about 140 HP, still does exactly same thing -
After several hours with a battery charger reading about 14HP just buzzes when
starter button is pressed.
What should I try next? Thanks!
Submitted: 1 year ago.
Category: Boat
Customer: replied 1 year ago.
Will not start even after after charging battery for several hours. Just buzzes when starter is pressed. Same situation with main engine (GM V-8 - about 140 HP)
Expert:  Tan replied 1 year ago.

Hello. My name is Tan.

Buzzing is a bad battery, battery cable or cable connection. Check all you battery cable connections on the engine, batteries and generator. Both positive and negative.

Since the engine and the generator are doing the same thing it will be the cable or the connections. The engine and the genarator will be fine as no 2 engine can have the same problem with a component failure. The engine and the generator wouldn't have a solenoid failure or starter failure.

If you have a volt meter we can do some testing to determine where you are loosing voltage.

Have you had the batteries tested?

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