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

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