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Finally got back to this after cleaning the mess in the yard and a bit of pure laziness. I adjusted the valves (not much, just a little loose) and cleaned the carb, but still not running right. I set up a pair of cheap in line spark testers and saw indications of interruption of the spark when...

Raining today and just had a tree damaged by hurricane cut down, so I have a couple of days work ahead of me. I will check into the latest tips and update in a few days. Thanks all.

I have removed the gas cap and it doesn't have any effect. I have also checked all of the deck pulleys and the mower clutch to make sure there aren't any binding up. The mower clutch is fully engaging and the brake is fully disengaged.

Stumbling refers to loss of RPM, sounds like it is going to die, but doesn't completely shut down. I have tried closing the choke and it does die at that point. By removing the load by stopping travel or shutting off mower, it recovers. When I swapped the carb, I assumed that I eliminated the...

My 2006 RTX50 (model 17AA5D7P710) with Kawasaki engine has developed a frustrating problem. When the mower is under a load, the engine starts stumbling-cutting out. I noticed that there didn't seem to be any fuel in the filter. I replaced the fuel pump and all the fuel lines after draining and...

Well, I installed the pulley in the "upside-down" position and checked the path with a straight edge. The straight edge was not parallel with the belt, but the angle did not improve when I moved the pulley down to where the original was located. I put it all back together and it seems to be...

That is actually my question. The "belt groove" (excuse my terminology here) is not centered on the unit. It is longer on the side with the key and as far as I can tell (I had to destroy the old pulley to get it off) the longer side was on the top nearest the engine. If I put it on with key at...

This is the pulley on the engine shaft. The original pulley key ended about at the arrow. The keyway on the engine shaft starts to slope at about that point. Model: 17AA5D7P710 Pulley part number is 756-0978A(or B)

I had to replace the drive pulley on my 2006 RTZ-50. The original pulley had a key that part of the hub and was on top. The new pulley has a key that extends to the top of the hub but the keyway on the shaft doesn't extend to the top. I am not sure what to do with this. Has anyone run into this...