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"I have a Snapper zt18440kh-509100 ztr mower. My center blade does cut as well as the others. I leave a small "mohawk" in grass when i mow. I have taken it to a repair shop and they said the only thing they saw was my blade bearing was going out. The problem is that this all started after I got stuck in the mud and I pulled the mower out with my truck but I didn't release the pressure on the hydro's to let the wheels spin freely. I changed the blades the next time i used it and when I putting on the new blade I noticed that the blades were able to be spun by hand where as before they were locked and you could NOT spin them at all unless the mowers on and the pto engaged. So Im trying to figure out what part I messed up for the blades not to be locked when the mowers off and if that caused my center blade to not cut as well or if that was coincidence.

Help on either problem is greatly appreciated!!!!!

Deck belt is warn and needs to be replaced.

Check the belt routing, my bet is that you will find that it is not routed correctly. This may result in the center blade not turning fast enough to cut properly.

I put a new deck belt on it 2 months ago and have used the mower 3 times(3 hrs worth). I checked the routing and its right. My belt has a fat flat side and a slightly thinner tapered side does it matter which side is going around the pulleys?

ohhh and thoughts on be able to spin the blades by hand now when they used to be lock?

V goes in this pulley.

Back of belt rides on this pulley.

ff54976 said:

ohhh and thoughts on be able to spin the blades by hand now when they used to be lock?

Click to expand...

I think we are thinking belt is routed wrong or tensioner is not working right.

ok thats the way I have it routed. How can I tell if the tensioners need to be replaced?

and is the pulley on the pto suppose to spin freely and locked in placed when the mowers off?

PTO sits still unless engaged. When engaged it spins with engine. When engine is off it sits still.

Did you route the belt like in this picture?

If the blade brakes would stop the blades from turning before and they spin easy now, you have a routing problem. Yes, it makes a difference which side of the belt goes on which pulley, as said before. If you follow the diagram Blaz enclosed, you should be able to solve your problem, unless you route it outside a belt keeper instead of inside.

I have it routed the exact way the diagram is and narrow side of the belt around the blade pulleys. The pulley is tapered where the belt fits exactly.

See I knew the pulley on the clutch was not normal. I can pull on the deck belt and watch the pto pulley go round and round as I pull hand over hand on the belt. So do I need to get a new pto?

Before we go change the PTO. It sounds like it needs it but I am not ready to send you out to purchase such a high priced item just yet. In the attached photo from above check to see if you can adjust #14 to one of the other holes to tighten the spring more. If you can it may save you a PTO for now.

The pulley that the belt goes on for the center blade is loose.
Check the nut on top of the pulley.