Following on from the theories mentioned in this thread, I tried to start it
with the air filter attachment bolt in place but with less choke - no
success.
Incidentally I now find that I can start the engine with the air filter box
attached provided I remove the attachment bolt - then starts first pull.
Davy
"Davy" wrote in message
...
My 1968 B&S 3.5 HP lawnmower engine (92902, pulsajet carb with two fuel
pickup tubes) will not start unless I remove the air filter; nor will it
start with just the air cleaner bolt installed without the air filter.
I have serviced the carb and replaced the gasket. I have checked and am
certain that the bolt is not interfering with the movement of the manual
choke.

Anyone experienced this problem?

Davy