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Decompressor Clearance

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I'll be checking my valve clearances and would like to check my decompressor clearance as well. I thought there was a procedure or at least a spec in the service manual, but can't seem to locate it. I believe the spec is 0.014" measured with a 0.011" feeler under the exhaust rocker or 0.028" without (rocker pressed against tappets). Can someone confirm this is correct?

Edited by mossman77

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you must be thinking of a 450, it has an adjustable decompressor.

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Yeah, the 250 is just easier in that regard. 👍

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