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"


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updated 11-14-04