Is there an easy way for me to check and see if a 96’ 112 johnson is actually charging the battery?
If your 112hp is an ‘spl’, then you may be setup like my. 88hp spl. The ‘spl’ motors were decontented to drop the price in comparison to their twins (112=115, and 88=90). The 88 does not have a voltage regulator, only a rectifier. Consequently, voltage varies with rpm. With the battery disconnected, use a volt meter to check the battery. Hook it up and crank the motor. Hook up the volt meter and give her some throttle. You should see the voltage increase as rpms do. This is a coarse test. But, if you don’t see voltage vary with rpms, something is wrong. Also, if your 112 is like my 88, then if your rectifier is shot, your tach won’t work. If your tach has died recently, I’d suspect a bad rectifier.
17’ Henry O Hornet
26’ Palmer Scott
No tach but did check voltage and it didn’t change when reving up engine. Started at 12.4 and stayed that way.
My SELOC manual says you should see 12v at the battery w/ motor not running and 14+ w/ the motor running. If you are seeing no change something is wrong. Also, if you have a rectifier only (no regulator) and if that rectifier is bad, it may get very hot. Mine went bad a few years ago and it would get so hot that you could not touch it…not even very briefly. It should get warm, not hot.
If you can turn a wrench, get a manual and have fun. If not, take it to Chrisa V @ Chas. Marine.
17’ Henry O Hornet
26’ Palmer Scott
not running, it should be just over 12 volts
running at idle you should see a small increase, and then as you rev the motor, it will increase even more, but no more than 14
What Chris said.
17’ Henry O Hornet
26’ Palmer Scott
Not running,running,revved up does not matter. It stays the same.
u probably need a rectifier regulator, but you need to have the stator checked first