I just rebuilt my 16.5 HP B & S 28W707-0121E1 motor and it is hard starting (need to take the air filter off to get to start). I'm thinking it might be the rocker arm gap which both are set to .006. When it is running, it has a loss of hp and there is blowback through the carburetor which is most likely the reason it goes through the gas. Any help is appreciated!
Excessive fuel consumption
- Thread starter rpaull
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zman111666
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If it runs only with the air filter off, or taking the filter off makes it run any different, then you need a new filter. Even if it looks clean, maybe it is oil soaked, and resistant to air flow.
Also, what reference should I be using while setting the rocker arm clearance?
zman111666
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I wonder if you don't have a fuel problem, to where it is running way to rich. It's not quite as likely if you have the Walbro carburetor, but if it has the Nikki, those things are kinda picky what with the fancy o-ring setup.
Boudreaux In Eunice La.
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Did you put the caps back on the valves ?? They are very easy to get lost ~!~!