Question about ATVs
Remove battery terminals and clean both posts and terminals
with sandpaper until you see shiny metal. The black coating is lead sulphate which has a high resistance to current flow both into and out of the battery. Charge the battery as not all batteries are charged sufficiently when new to do the job. Also not all new batteries are good batteries as they suffer manufacturing faults which allow them to discharge internally. some batteries are sold without the acid so check that is not the case.. Check all terminal connections including any earth wires.
Posted on Jul 15, 2013
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Posted on Jan 02, 2017
SOURCE: i have a 2004 big
NEVER run it without the battery being attached!
Doing that risks voltage spikes that can blow out every single diode in the entire system.
If you had not done that, I would have just suggested perhaps it had a bad ballast resistor on the ignition coil or something.
But now I would have to recommend that all the charging circuit diodes be check with an ohmmeter. They should only have continuity in one direction.
Then you need to put a voltmeter across the battery and see if it holds up when cranking. If not, then either the starter is bad and drawing too much, or the new battery is no longer any good. It only takes a couple of hours to ruin a new battery if there is a bad enough drain on it. If the diodes are shot, the battery will drain even when just sitting while off, as long as connected.
Posted on Aug 29, 2010
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