If the wires are getting warm for a short energized time, I would 
suspect the wires and probably go 2 sizes larger. Check the temperature 
of the terminals, a corroded or not properly crimped terminal can be the 
culprit.

Mark E. Skeels wrote:
> I measured the voltage from + battery term to + starter motor; then 
> minus battery term to - starter motor, and added.
>
> It's a new lead/acid lawn mower battery. The wires were original and 
> getting warm, so I surmise current is probably OK......
>
> Mark
>
> Dr Skip wrote:
>   
>> How did you measure the drop? My first guess would be sulphated battery
>> not able to provide enough current. I might also try heavy gauge wires
>> direct from a known good (or even oversized) battery to motor, both +
>> and - .  If still no turn, then it's the motor. If it works that way, go
>> huntin' some more.
>> -Skip
>>
>>   
>>     
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