Posted by John T on December 28, 2010 at 10:55:03 from (66.244.97.31):
In Reply to: jumping 6v with 12v posted by Jackers on December 28, 2010 at 07:21:20:
Jackers, when you stated:
"Hooked on the starter the 12V(-) with (+) to the frame and then pushed the starter pedal."
Sorry, Im not quite exactly sure what you did.
THE SAFEST WAY TO JUMP START A 6 VOLT TRACTOR WITH A 12 VOLT BATTERY IS TO JUMP THE STARTER MOTOR ONLY i.e. not the entire 6 volt system including the battery. The way you can do that (depending on the type of starter and switch/solenoid it has) is to attach a jumper cable direct to the starter post/stud (if it has one out in open) or the To Starter (NOT to battery) side of a 2 terminal In/Out mechanical push start switch, and then when you want the starter to spin, attach the jumpers other post to a clean non painted case/frame steel part of the tractor or even the starter motor side etc. THAT METHOD APPLIES 12 VOLTS TO THE STARTER ONLYYYYYYYYYYY NOT THE 6 VOLT BATTERY which can be hazardous
NOTE/CAUTION this is ONLY possible if it has a 2 terminal In (Battery side) and Out (starter side) mechanical push start switch or a solenoid. THIS IS NOTTTTTTTTTTT POSSIBLE, if the starter post is hidden under a one (visible) terminal mechanical saddle mount push switch, as you cant get to the starter itself alone and isolated as in the switch types described above.
NOTE If all it has is a ONE VISIBLE TERMINAL saddle mount starter switch with the big battery cable attached to it and you cant get direct to the starter post/stud alone all by itself, IF YOU ATTACH A 12 VOLT BATTERY TO THE INPUT SIDE OF THAT SWITCH, THATS THE SAME AS ATTACHING IT (12 volts) TO THE 6 VOLT BATTERY (that big cable on switch leads to battery remember) AND THATS DANGEROUS !!!!!!!!!!!!!!!!
DO NOT EVER JUMP A 6 VOLT "BATTERY" USING A 12 VOLT BATTERY, AS THERES A CHANCE SUCH CAN (given the right conditions and circumstances) CAUSE THE BATTERY TO EXPLODE. But its safe to apply 12 volts to the STARTER ONLY if the starter has a post/stud out in the open or uses a 2 terminal In/Out mechanical start switch or solenoid.
You see the confusing part of your statement is that you "pushed the starter switch" which makes it sound like you had the jumper on the hot big battery cable INPUT side of the switch which poses the same dangerous risk as hooking it a 12 volt battery to your 6 volt battery YIKES!!!!!!!! DO NOT TRY THIS AT HOME
IF THATS NOT WHAT YOU DID I APOLOGIZE but still all the above is true and accurate and I just dont want to see anybody hrut or loose their eyeseight from battery acid BETTER SAFE THEN SORRY IS THE REASON FOR MY POST,....
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