First if it is a 214 it is a Kohler engine. A K321AQS. If it turns over fast I suspect it broke a rod. Take the head off and see if the piston is going up and down. Also check to see if the valves are moving and the head gasket doen't have apiece of it missing. Roger

 

X2 on that.

 

If it has a Kawasaki in it then get rid of it and put a cast iron K series Kohler back in it. Better motor for the amount of pulling and torque these tractors have. Can take much more abuse too. They can rack up quite a few hours.

 

240cc is like 7 hp. 400+cc would be 13hp+.

 

I think your math may be off a touch. My 600cc motorcycle was just under 100hp. My buddy's 450cc quad was north of 40hp if I remember correctly.

 

humm not sure. My garden tiller is 212cc. Most 214's had the K321AQS kohler which is 512cc. Seems like 240cc would be underpowered for a mower deck.

600cc bike will be different. You do not have a governor keeping it maxed at 3600 rpm. Or we could say, limit your 600cc bike with the max rev limit to 3600 rpm. Probably end up being only 25-30 hp.

Pretty much why a lot of gocart people take a 5hp briggs and pull the governor out so that the engine can reach 8,000 rpm. Big jump in horsepower from what it's designed to be.

If they didn't lower the rpms of mower engines, they would ware out before 500 hrs of use. So guess a person needs to keep that in mind.

 

I have never refered to lawn mower engines as cc's so I didn't realize they were so much lower. Usually it is just hp or a m# of the engine.

 

I would re ring it and see what happens. That is if bore looks fine.

These engines are pretty easy to find in my area, not sure about yours.

The FC420V is a 14 hp engine. Even a FB460V should bolt right in. But you are loosening 2 hp. But still an option.

 

Thanks. I'll keep my eyes open. I'll post again once I've replaced the rings and given it a shot.