Briggs 422707 Firing one cylinder

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  #41  
Old 06-10-09, 07:56 PM
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Im shopping for carbs.

Is the briggs model 693480 (from a briggs 19.5 twinII i think) compatable with a 18Hp I/C. I believe my old carb was a 394338.

How about one off a 42B707 ? is this just a newer version of the 422707?
 

Last edited by jasonmargeson; 06-10-09 at 08:17 PM.
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  #42  
Old 06-10-09, 10:00 PM
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Most all of the opposed twin in-block-valved vertical briggs engines can exchange carbs back and forth. From 16 hp to 21.
 
  #43  
Old 06-12-09, 07:44 PM
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THanks. I found a second hand one locally. Its in great shape, but im going to clean and rebuild. ill post results.
 
  #44  
Old 06-15-09, 04:14 PM
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Thanks to all who've helped. The old girl is working pretty good after a new (used) carb and a carb rebuild.

Comparing the 2 carbs, the jets in my old one were larger than my new one. I can only assume it was like that from years of being cleaned incorrectly.

Still the odd puff of black, but i figure thats from all the carbon that likely is on the cylinder head and piston. Plugs are nowhere near as fouled as when i started this adventure

Thanks again.
 
  #45  
Old 06-15-09, 07:00 PM
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One last question: When timing the mower blades (its a 44" with the cogged timing belt) should the blades be inline (well not inline but a few degrees out) or should they be perpendicular When at rest?
 
  #46  
Old 06-15-09, 09:34 PM
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Perpendicular so that they can't hit even if something gets between them.
 
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