Hi, Help please..... I have a Briggs and Stratton engine(8HP, 319cc Vertical crank, Model 190707 /Type 1189-1 Code 80080709) which is very difficult to start - and if starts runs rough and is now cutting out when warm and wont restart.
This is fitted on a ride on mower - I have disconnected all the electrics to the mower but no change.
I have fitted a full carb refurb kit and new spark plug no change.
I set the air jet (Top of teh carb) to 1 turn and the mixture jet to 1 1/2 turns..
The compression measures 120Ib cold and is similar hot.
So.... what am I doing wrong? All ideas appreciated , Thanks Garry
Although hot compression test would suggest against it, if the valve lash/clearance is too tight, it will perform poorly and be a bear to start when warm. Just a thought.
Dave
May 2009
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