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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 30098
Experience:  Service manager and technician for all brands of engines with 40 + years of experience.
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I have a mountfield ride on 20/40 when i pull the start

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I have a mountfield ride on 20/40 when i pull the start switch for the blades the charge light comes on after a few minutes it stops

Engine model number? The charging system is not keeping up with the voltage demand from the electric clutch. Battery can be weak or too small, or the stator/alternator and voltage regulator or diodes are not letting the charging system get the DC volts to the battery for charging. Do you have a voltmeter to check battery voltage before starting and with engine running ?

Customer: replied 1 year ago.
What should the voltage be

Voltage can not drop below 12 volts, or the electric blade clutch will drop out. Checking battery voltage before start, should be 12.5 volts or above, and with engine running at speed, the voltage should increase at least one volt, to above 13.5 if the stator/alternator is working.

Customer: replied 1 year ago.
What should the voltage be when the blades are running please

minimum of 12 volts Dc!

Curtis B. and other Small Engine Specialists are ready to help you
Customer: replied 1 year ago.
Thank you I'll check the voltage and I'll come back to you

OK> Thanks.

Payment failure. Do you need call? Did you ever give me the engine model number?

Customer: replied 1 year ago.
I have got a problem with the voltage when I check it was ok but then the charger light started flashing and the engine cuts out

Do you have good battery? How old and has it been load tested? Seems like charging system may be dropping out, and this can be voltage regulator, but with out mode number of the engine, don't know what you have for a voltage regulator.

Customer: replied 1 year ago.
It's a new battery 22 amp when I check it it was reading 16volt

So not a battery problem, so it has to be the charging side.