Magnum flywheel

[curtisbyrne]

How long usually does the flywheel that creates electricity to charge the battery last for I don't think it has ever been replaced in my 1992 magnum so would that be the reason why my battery is not charging

[Vance in AK]

The flywheel should never wear out. It's just a big hunk of cast iron. There are magnets glued to the inside & they MAY have broken loose but more likely it's the voltage regulator or stator.

[olargo]

I would suggest checking or replacing the rectifier/regulator. I had an Argo I/C with the Kohler 17 hp engine that stopped charging. At first I misdiagnosed it - I bought a stator, thinking that it was the culprit. But it was the rectifier/regulator. Once I replaced it, the engine charged just fine.
I'm assuming of course that you have a Kohler engine.

[curtisbyrne]

Yes I have a Koehler engine 18 hp red so it is most likely the stator or regulator. How hard is it to replace the stator

[anotheramature]

you can test the stator out put with a volt meter if you have one. disconnect the two outside leads on the rectifier and connect volt meter to 200 volts a/c and crank engine run up rpms and it should read between 25 and 30 volts a/c. if you don't get that voltage it is not working. if you get 25/30 volts a/c than test rectifier it will be the center lead and it should read 13/15 volts dc.

[curtisbyrne]

Ok so cost and part number for a stator for Koehler magnum

[curtisbyrne]

1980's Kohler Magnum 18hp Motor ~ Stator
Would the connections work? Someone suggest for me that is not to expensive and still works that would for a m18 kohler

[msafi65]

Before purchasing the stator test as described above. AC voltage should be above 28 volts. Also test the resistance of the coil on the same two wires. 15 amp system is supposed to read .1-.2 ohms. 25 amp system is supposed to be .064-.096 ohms. The eBay one you posted should fit. It appears to be a 25 amp coil. If your resistance shows open or 0 ohm the coil is bad. Sorry to say they are usually destroyed by loose magnets from the flywheel. Test it properly before spending any money on parts. You also must have battery voltage to center terminal on regulator with engine off. A bad fuse will kill the charging system.

[curtisbyrne]

Ok the only fusses are in the fuse block right no where else

[Nubs]

Ok the only fusses are in the fuse block right no where else

Have You checked the system with a meter yet??

[curtisbyrne]

No probably this weekend tho because I did t have her running in a while so yes so what should I test specifically

[curtisbyrne]

I can test it this weekend so what should I test and how specifically ?

[curtisbyrne]

I need to know all the voltages and if it is in ac or dc. I am going to be testing the stator and regulator so I need to know by the weekend

[msafi65]

Best thing to do is go to Argo adventure website. Look up magnum manuals and download the m18-m20 engine manual. The electrical section is very detailed with drawings as to what leads to test. The previous posts here cover most of it but the diagrams will help a bunch. I've seen people spend hundreds of dollars on unnecessary parts by jumping in without testing. Good luck.

[curtisbyrne]

ok i found the manual do my 1992 argo magnum with a kohler m18 red engine have a 15 or 25 amp stator?