cub electrical question

ericlb · May 16, 2013

my '49 cub has pulled a new one, it wont crank, now this one doesnt have any lites hooked up so the only power is the battery for cranking, it is mag fired for ignition,battery curently reads 4.4 volts, now i ran this cub 4 days ago for several hours,it ran just fine, and showed a charge, it has always been a little hard to shut off, that is i have to hold the kill switch in to stop the engine, so if the kill switch was returning to the hot position,after i take my hand off of it when the engine stops, would it cause a drain on the battery?, the cub will hand start, so the ignition system is still ok, the battery is 2 years old, any ideas would help, trying to figure out if i have a battery bad or something else going on ,also is there something i can do inside the kill switch to make it shut off better, or just replace it?

Zachary Hoyt · May 16, 2013

If you have a mag then the kill switch should not be connected to the battery system in any way, except that they share the same ground. I would take the battery off the tractor and charge it and see if it will hold a charge off the tractor. If it will then I would hook it back up and start looking for what could be draining the battery, maybe something in the charging system.
Zach

ken house · May 16, 2013

i do not have it now, but, i think that as a rule, it is wise to have a disconnect, so electric does not have an opportunity to go to ground.

teddy52food · May 16, 2013

Sounds like the battery has a dead cell. Check them with a hydrometer.

mkirsch · May 17, 2013

Dead cell x2.

4.4V is exactly 2/3 of the ~6.6V that a fully charged 6V battery should measure. There are 3 cells in a 6V battery.

That can easily happen overnight.

cub electrical question

ericlb

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Zachary Hoyt

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ken house

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teddy52food

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mkirsch

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