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It seems that I am back in the same situation as the original post in this message stream. Everything points to another bad voltage regulator. Any idea why these things continue to blow? The last regulator has lasted about 8 months. Put a new battery on the mower yesterday and it worked great...

Thanks for all the help. It seems the regulator pins from the aftermarket regulator do not line up the same as the factory. I had to split the stator wires from their harness and run them individually to the correct posts. All is good now.

So it seems we have an issue again. After two days of starting and running strong, I had to jump the battery to get the mower running this morning. While mowing, it just died and I cannot get it restarted. Nothing works. There is no power at all. Am I looking at a bad starter switch issue?

Update - I put a charged battery in place and everything is not operating perfectly. It seems the regulator needs 12V to produce the continued 12V+ charge. Measuring across the battery at WOT now reads 13.5V+. Thanks for all the help.

Also, the ground is good measuring the same voltage from the ground screw to the positive on the battery as it does across the battery.

I have 8.5v across the battery. 10V from the regulator to ground with the engine running WOT. The stator is 32VAC. Any other ideas? It seems the battery is slowly discharging. It started at 9.5v and continues to decline with the motor running.

Shouldn’t the higher rpm show a higher voltage output from regulator to battery?

Yes. These are both 8v and does not change the battery is not fully charged. I’m jumping it off to start the mower.

Yes. These are both 8v and does not change with a higher rpm.

The stator is good. Measuring 30v

It is grounded to the same screw that mounts the regulator to the metal cover. This was the ground location from the factory.

I have a bad boy revolt with a Kawasaki FX850V. I changed the battery after it died a couple of weeks ago. The new battery died soon after changing. I found the voltage regulator was bad. I changed the regulator and jumped off the battery to get the mower started. Voltage between the regulator...

I have the exact same mower. There is a small piece behind the carburetor, called a thermo wax assembly. These are cheap pieces that go bad easily. My mower was doing the exact same thing. I replaced the carburetor, coil, gas cap, and spark plug and it still shut off after 15 minutes. Once I...

I have been through the steps of each reply. Spraying carb cleaner will keep it running but there is no restriction in the fuel hose. The carb is brand new. Not sure what other fuel problem there could be.

So here’s an update…I replaced the fuel cap and the problem still exists. I replaced the thermowax choke actuator and the mower started and ran at a very high rpm. Not sure what caused the high rpm but I mowed with it anyway. It started sputtering after 15 minutes like always and eventually...

I tried to run it with the fuel cap off and got the same issue. Oil level is perfect.

Flywheel key was sheared. Put a new key in and reassembled. All is great now. Thank you to everyone for the help.

I have a walk behind mower model HRR216K9VKA with the Honda gcv160 engine. After about 15 minutes of use it starts to sputter and eventually dies. It has a new carb, new air filter, new spark plug and new gas. Still the same issue after all the updates. The mower is not too old and has not...

Pulled the flywheel again today and found the key was sheared. Timing has been way off as a result. I’m sure I can get some keystock at a local auto parts house. Anyone have any idea how big that key is? It was completely obliterated and I have nothing to go on. All parts diagrams only show a...

I removed the flywheel when I tore it down.

Spark plugs are fine. The flywheel key was not sheared. How do I adjust the timing? The engine is definitely grounded. It’s so got that you can’t get near the back end of the mower. I am in desperate need of getting this back up and running. I mowed with it for about 30 minutes after it was...

One of my employees put my zero turn mower into a pond. The motor is a Kohler ZT 740–3017. When I open the case, I found both piston rods to be bent. I replaced both pistons and rods. There was no scoring to the cylinder walls. I reassembled everything and the mower runs extremely hot. The oil...

One of my crew put my bad boy maverick with a Koehler ZT740 into a pond. It bent both piston arms but everything else seemed to be ok. I replaced the piston rods, one of the pistons and put everything back together. The mower starts and runs but gets extremely hot. So hot that it has started to...