To correctly adjust the valves, the valve springs must be removed (L-head engines only) and have the piston at 1/4″ past TDC on the power stroke.

Model Series Intake Valve min/max Exhaust Valve min/max
60000-120000 .005/.007″ .007/.009″
130000-280000 .005/.007″ .009/.011″
230000-240000; 300000,320000 .007/.009″ .017/.019″
Twin Cylinder Vanguards 290000, 303000, 350000 .004/.006″ .004/.006″
400000, 420000, 460000 .006″/.008″ .009″/.011″
28N700, 28P700, 28Q700, 28S700, 28U700, 28W700, 287700 .003″/.005″ .005″/.007″
310700, 312700 .003″/.005″ .005″/.007″
85400 .002″/.004″ .002″/.004″
97700, 99700 .005″/.007″ .005″/.007″
104700 .003″/.005″ .003″/.005″
115400, 117400 .002″/.004″ .002″/.004″
138400 .005″/.008″ .005″/.008″
161400 .003″/.005″ .003″/.005″
185400 .002″/.004″ .002″/.004″
235400, 245400 .004″/.006″ .004″/.006″
260700, 261700 .003″/.005″ .003″/.005″

Home | Questions?
updated 11-14-04

13 responses to “Valve Specifications–Briggs and Stratton”

  1. I have a 21 HP v-twin vanguard it has a fluttering sound kind of like it is missing. It has 130 lbs. compression one cyl. sounds like it is missing at an idle when pulling spark plug wire off but at top rpm its not to noticeable but still has some rumbling sounds. You can take the dipstick out and it blows some oil out. what sounds like the problem. Thank you

  2. Mike says:

    Head gasket blowing on one of the heads – ive got the same problem , its easy enough to fix.

  3. garnet says:

    what is the valve clearance for an 8 hp flat head eng.

    • Ronald E. Thacker says:

      I’m asking you someone out there can anybody tell me the valve lash setting for a 24 horse V-Twin Briggs and Stratton intek please thank you

    • P Kaltenborn says:

      Intake: Between 0.005 and 0.007″

      Exhaust: Between 0.009 ND 0.011″

      Measured on compression stroke with piston 1/4″ past TDC.

  4. Raymond Holman says:

    What is the gap gage for the Valves on a Briggs & Stratton 24H over heat came engine and how do you read the numbers on the feeler gage

  5. jason says:

    i have a 22hp briggs, I’m needing to know what to set the valves to on it

  6. Keith says:

    I have Intek 21 hp engine what is the space on the exhaust and intake valves

  7. kyle bandy says:

    looking for valve specs for a 21 hp single cylinder intake and exhaust please and thank you.

  8. lewis says:

    do anyone know the specifctin for a 283h07 I need the head and vaue

  9. Bill says:

    What are the valve clearances for B&S 18.5hp model 31q777 type 0305e1

  10. Gene Rhue says:

    What is the valve lash and cyl. head torque on a 126T02-0675-B3?
    Thanks,
    Gene

  11. Gene Schmutzler says:

    Where is the model # on two cylender b/s j/ d mower

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