On 19/08/2012 13:56, AL_n wrote:
"AL_n" wrote in
:

Can anyone help? I have a Mountfiled Empress 4hp petrol mower that I
obtained from someone who inherited it and wasn't sure if it was
working or not. I got it home, put some unleaded petrol in the tank,
checked the oil level and cleaned the air filter. After only a few
pulls of the pull-cord, it fired up and the engine seems to run
smoothly and steadily. However, it does seem to lack power and after
cutting some grass for a few feet, it seemed to gradually lose power.
This continued even with the blades lifted off the grass, and no
matter how I set the throttle.

Can anyone suggest a logical sequence of things I should check?

TIA for any help!

Al


PS... Now when I try to fire it up, it starts up OK, but then dies out
after about one second...

Not enough petrol getting through. Is the vent hole in the filler cap clear?