Thanks again all,
Grumpy yes it rolls very easy when motor is off forward and back. The belt I got from a Greenfield dealer and gave him the code of the mower and looking at the thickness is the same as the other 2 old ones I have and is very tight with still some room on the sliding pulley adjustment for more tightening.
Also you thought I mentioned this problem happens cold or hot but It doesn't seem to happen at first. The first 2 or 3 climbs it can climb well then it gets up about half way and stops dead with no wheels turning and motor still running perfect. If I leave it and mow the flat for a minute and go back to it, it climbs up well again another once or twice and then happens again and sticks in forward gear and wont roll back down until I tap the pedal in reverse and it clunks off and releases.
Another thing I notice is if I lower the power down and drop the revs it seems to help to climb a bit better when it starts happening.
There is no oil around the clutch and the pedal system to the clutch all seems tight and operating very well and responsive. When motor is off it rolls very easy forward and back and when I hit the pedal forward or back its like hitting the brake and stops dead but from only free rolling that probably doesn't mean much.
