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-   -   How do I adjust valves on a 15.5 briggs and stratton lawnmower (https://www.askmehelpdesk.com/showthread.php?t=239338)

  • Jul 19, 2008, 06:40 PM
    jeflyda
    How do I adjust valves on a 15.5 briggs and stratton lawnmower
    Hi we need help with trying to set the vavles in our riding lawnmower. We have a 15.5 briggs and stratton thank you
  • Jul 19, 2008, 06:46 PM
    KISS
    With the piston 1/4" down on the power stroke adjust per specification.
  • Jul 19, 2008, 06:51 PM
    jeflyda
    Quote:
    Originally Posted by KeepItSimpleStupid
    With the piston 1/4" down on the power stroke adjust per specification.
    What are the specs to adjust it at
  • Jul 19, 2008, 07:01 PM
    KISS
    My crystal ball is broken again. Every model engine has different specifications for the valve clearances for intake and exhaust.

    Briggs has repair manuals at Home - Briggs & Stratton
  • Jul 20, 2008, 06:15 AM
    MOWERMAN2468
    Run the engine for five minutes. Shut down, remove the tappet cover (valve cover), have some old shop towels underneath the cover to catch the oil that is going to run out. Get the engine on compression stroke and at TDC PLUS one quarter of an inch. Then set the valves to .005" using the jambing nut and feeler gauges.
  • Nov 22, 2012, 05:26 PM
    d7t4w32
    The specs for my 2001 15 1/2 hp B&S engine is .003-.005 intake and 005.-007 for exhaust. Does this help?

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