On Apr 18, 6:18*pm, ransley wrote:
On Apr 16, 9:30*pm, Manjo wrote:





I have a leaf blower that uses a 5 hp B&S "L" head engine. *The carb
is pretty simple with a choke butterfly, throttle butterfly, and
rubber diaphragm fuel pump. *The carb sits on top of the fule tank.
The carb has no bowl. *The governor linakges are clean and the
governor appears to be working fine.

The leaf blower was starting to run poorly last fall. *This spring it
started right up, but after4-5 seconds after running smoothly at
proper speed, it will slowly loose rpms and finally stop after 15-20
seconds.

I have cleaned the pick-up tube, replaced the carburetor diaphragm
fuel pump along with the gaskets between the carb and the fuel tank,
and the gasket between the carb and the engine. *I've also
disconnected the engine ground wire that normally kills the engine
when the throttle is tuned full off. *But after doing all this the
engine still will not stay running for more than 30 - 40 seconds.

Thanks in advance for any tips, suggestions, or coments.

Manjo

It probably has an electronic ignition mobule, see if it gets spark
just after dying, if its very old with points maybe a capacitor is bad- Hide quoted text -

- Show quoted text -

THe engine is about 10 years old. Here's a link I created to the
parts manual pdf file.

http://home.comcast.net/~manjo1111/B...LIST%20old.pdf

Page 7 has an exploded parts diagram and lists all the "electronics".
I don't know or understand magneto systems very well other than they
are designed to be create a spark without the need for a battery or
alternator. I've looked on the engine and in the parts list and all I
see are the magneto assembly (windings block and spark plug wire)
bolted to the engine block, and what looks like a set of aluminum(?)
finds on the rotor that interrupt the creation of current in order to
create a spark at the plug. Manjo