Posted by John T on January 30, 2011 at 10:05:50 from (66.87.4.252):
In Reply to: how come then? posted by rrlund on January 30, 2011 at 08:58:38:
Hmmmmmmmmm, it could have been another problem besides the battery was at the wrong polarity like a bad connection or bad ground very possibly or even a battery problem (Other then wrong polarity). I say that because in all my years as a used tractor dealer and farmer (hundreds of old "farm" tractors were bought, sold and/or used) any size of "farm" tractor (NOT a smaller lawn n garden tractor mind you) ALL HAD ELECTROMAGNETIC FIELD STARTERS that indeed still turn the same direction regardless if the battery got reversed polarity.
The incorrect polarity on a coil ignition can yield a weaker spark but she still sparks. An incorrectly polarized genny can hurt a Voltage Regulator. If the battery got reversed and the genny wasnt correctly polarized the charging system could have been damaged resulting in lowered battery voltage, thats another possibility.
If that tractor has a permanent magnet starter (seen more on smaller lawn n garden type tractors) then incorrect batterty polarity would make her spin opposite.
Sorry, without knowing the starter it used its hard to answer
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