Thanks Bruce,

What the mower does now , is I set the Rev Speed, get pulled along at a Nice speed in the Shorter grass , I hit the longer Grass it nearly dies , I move the throttle to faster , it goes good , then if I hit the Shorter grass again , I'm running at 25mph behind the Mower and the engine is revving it's head off .
After your reply, mentioning the Tube to the Motor , I sussed out the Tube and the Spout on the Engine .
The tube wasn't a tight fit on the spout, and the Spout may had some crap in it. I hope it did !

I will wait for this "wonderful" Rain to stop before I try it . it is a pity that all this rain we have lately most ends up in the Sea.
I think we need more politicians like "Curtan"....
( who started the Snowy Mtns Scheme and wasn't worried about the fact that it wouldn't be finished for 20 yrs when he wasn't in office)

All the Best ..........
Thanks for your help,... I'll let you know the outcome
Ron.