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Home›Repair guides›B. No- See appropriate Engine Service Manual.

Briggs & Stratton — B. No- See appropriate Engine Service Manual.

For these Briggs & Stratton models: 10 kW, 8 kW.

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Procedure

  1. 36. Remove spark plug cables from spark plug terminals. Always pull on the boot at the terminal end or
  2. 37. Thoroughly clean area around spark plugs to keep dirt out of the combustion chamber.
  3. 38. Remove spark plugs from cylinder heads using a 5/8 inch spark plug socket.
  4. 39. Turn engine crankshaft in the direction of engine rotation until piston of cylinder #1 is at Top Dead
  5. 40. To ensure that tappet is not resting on compression
  6. 41. Remove four screws with washers to release valve
  7. 42. Insert feeler gauge between rocker arm and intake
  8. 43. If adjustment is necessary, proceed as follows:
  9. A. Obtain Briggs & Stratton Valve Adjustment Set
  10. B. Place socket (13mm hex) over locknut.
  11. C. While holding socket on locknut, insert hex (5mm) or TORX (T-40) bit through hole to engage
  12. D. Rotate socket CCW to loosen locknut, and slightly turn adjuster screw in a CW or CCW direction
  13. E. While holding hex or TORX bit on adjuster screw to prevent rotation, turn socket in a CW
  14. F. Remove tools and use feeler gauge to check valve clearance. Repeat steps as necessary until
  15. G. Tighten locknut to 70 in-lbs (8 Nm). Check valve clearance one more time to verify that adjusting
  16. 44. Insert feeler gauge between rocker arm and exhaust valve stem. Verify that exhaust valve clearance
  17. 45. Start four screws with washers to install valve cover of cylinder #1.
  18. 46. Alternately tighten valve cover screws to 70 in-lbs (8 Nm) using a crosswise pattern.
  19. 47. Repeat steps 39-46 on cylinder #2.
  20. 48. Install spark plugs into cylinder heads and finger tighten until snug. Tighten spark plugs to 180 in-lbs

Source: manual:Briggs_Air-CooledRepairManual80019677.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.