BS 300E won't start and run

Prof401

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I've cleaned the gas tank, replaced the sparkplug and the carburetor but it won't start unless I remove the air filter (also clean) and spray started fluid directly into the engine. Then it runs fine (without smoking) until I release the kill switch. It won't restart without spraying the starter fluid. I thought the primer bulb might be the problem but it looks to be in good shape. Any suggestions to make this little beast crank and run like it was designed to do? Thank you for reading.
 

slomo

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replaced the sparkplug and the carburetor
OEM Briggs carb or Amazon?
It won't restart without spraying the starter fluid. I thought the primer bulb might be the problem but it looks to be in good shape.
Primer sounds like it is not working. Look into the throat of the carb with the choke plate open. Push primer. Should see a small stream of fuel squirting up into the carb.
primer bulb might be the problem but it looks to be in good shape
Parts need to function not "look" like they do something.

Most of the time the air filter housing plate is over torqued which warps the plastic. Or you have a dead primer bulb seal.

Look into the primer bulb. Make sure it primes.
 

slomo

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Watch the whole video. Watch at 7:38 for the fuel squirt. This shows the primer working.

 
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