Magnet broke off inside of flywheel!

timmy1(6a ri)May 14, 2008

A Kohler CV 12.5hp

The electrical system had a small draw that was killing the battery. Traced it back to the voltage regulator. When voltage regulator was unplugged, the draw would go away. When the voltage regulator is plugged in, it makes the connection between the wire harness and the wires going up under the flywheel to the alternator.

There are 6 magnets under the flywheel for the alternator.

Discovered one magnet was dislodged from the flywheel.

Few questions...

1. Will a dislodged magnet create a draw by closing the airgap?

2. Will the charging system still work with one of the six missing?

3. Will the engine vibrate from the flywheel being out of balance?

4. Will a dislodged magnet cause the engine to die while running for no apparent reason?

Thanks!

Tim

Thank you for reporting this comment. Undo
canguy(British Columbia)

A dislodged magnet can do a lot of damage, carefully look at the alternator windings. The current draw indicates a problem here which may have caused the v/r to fail. It certainly will cause an imbalance and subsequent vibration which you may not notice but will be hard on the engine.It should not affect running on your engine as the magneto and pick up are on the outside of the flywheel.

    Bookmark   May 14, 2008 at 11:23PM
Thank you for reporting this comment. Undo
rustyj14(W/PA)

Get some epoxy glue and stick the magnet back on! A simple fix, and will work!

    Bookmark   May 15, 2008 at 10:43PM
Thank you for reporting this comment. Undo
tomplum

Like canguy says, inspect the stator. I've never seen one toss a magnet without damaging it. A lucky man you would be if the magnet dropped out when the flywheel stopped spinning. The regulator may be toast as well. It is an easy test when you get that far. As rusty says, you can re-glue the magnet on. However, i personally would be concerned of the likely hood of losing another magnet into your nice new stator. You can run it- but the battery then becomes the sole provider of power for the carb solenoid and electric pto if whatever this is has them. The proper repair is replacing the flywheel, stator and regulator. Just look closely that no damage was done to the mounts/ block in the stator area before you order. The parts aren't that pricy for a worthwhile piece of equipment.

    Bookmark   May 16, 2008 at 2:36AM
Thank you for reporting this comment. Undo
timmy1(6a ri)

The stator does not look to be damaged physically. Can we check the windings with an ohm meter for damage? I'm wondering if maybe the magnet came off while removing the flywheel itself?

    Bookmark   May 16, 2008 at 8:21PM
Thank you for reporting this comment. Undo
bill_kapaun

Stator can be checked.

Since you have the charge diode in the connector, resistance should be infinity in one direction and approx. midscale in the other direction on the RX1 scale. (other test lead to ground)
Lighting coil should be 0.15 OHM. (Yellow lead)
Remember to allow for thew resistance of the leads.

    Bookmark   May 16, 2008 at 10:25PM
Sign Up to comment
More Discussions
I have a Tecumseh 5hp egine no spark
I measure the ohms from the following. I placed one...
Nutty1269
Honda HRX217
Had it for 10 years and is the best mower I ever had....
bob3d
Briggs and Stratton spark plug confusion
I've got a B & S opposed twin 422707 on a Craftsman...
yt125
JD L100 and LA100 series trans oil change
I have a JD L118. It had a K46 trans that failed at...
fix_it
Craftsman ZTS 7500
Going to look at a used one of these tomorrow. Anything...
radlee30458
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™