Question about Parks Optical Briggs And Stratton Engine Intek 10.5hp Lawn Mower
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Posted on Jan 02, 2017
Remove the spark plug. Turn the flywheel until the piston is at Top Dead Center (TDC) on the compression stroke. Continue to turn the flywheel until the piston drops down 1/4". Set the intake valve at .004" - 006". Adjust the exhaust valve to .006" - .008". You can use a pencil to know that the piston down 1/4". Just put it in the spark plug hole against the top of the piston and then place a mark on the pencil at the lip of the spark plug hole. Now measure up 1/4" and place another mark. Turn the flywheel unit the second mark is flush with the lip. The feeler gauge should be snug but move freely when adjusting the valves. Double check it after locking the rocker arm nut down.
Posted on Oct 18, 2010
There is still either water or debree contaminating the fuel system. Surging is usually debree, empty and flush the tank with gas or Iso alcohol, disassemble carb soak in solvent for 30 minutes blow out the carb passages, reassemble and if the problem persists run engine at top rpm with air cleaner off and block off carb intake with hand, this will stall the motor restart and repeat 4 - 5 times this wiil draw out any debree or other blockage in the carb.
Posted on Jul 25, 2009
It looks like that your valves need to be maintenanced. This can be done by small engine repair shops. They should have the proper tools.
Also the "timing" of the spark and the fuel injection could be a problem. I hope this helped you.
Posted on Sep 30, 2009
adjustment with 4000 feeler gauge
adjust top valve when the bottom valve is fully compressed and than with the top valve fully compressed adjust the bottom valve the same way.
very easy But remember to losen the center tork screw before adjusting the rocker arm nut
Posted on Apr 02, 2010
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