alternator

[dwint]

just bought a new battery and it read 12.71 and when started it read 12.8.ivenever had aproblem with a dying battery before I just jumped it this once and rode the mower for two hours and it never charged.i have a 2008 17.5 briggs motor and im wondering if the alternator is under the fly wheel

 

[SeniorCitizen]

whydiduneedtojumpit

 

[dwint]

the battery was dead.it read 12.43 but wouldn't turn the motor over

 

[SeniorCitizen]

a new 12 V battery that reads 12.anything isn't dead there is a problem other than the battery if it doesnt go below around 10V when attempting to crank if it goes to about 8V when cranking have the battery load tested

 

[motoman]

Surface charges occur due to sulfating of neglected and old batteries . A DVM probe on the terminals can read 12v in a battery which will not take a charge. A load test or even a battery hydrometer reading is a better test. Unfortunately, many "battery shop tests" are highly suspect, it seems.

 

[Boobala]

Try pullin the starter off and test it by "hot wiring" direct to the battery and ground ...... could have a melted starter . Boobala :confused2: