This is a fairly common question! This page has the most common "how to remove that timer knob" information for some of the more common washers made today.
A common Whirlpool, Inglis, Kenmore ( 110. models ) & Kitchen Aid
Newer Frigidaire top load washer- common timer with keeper clip
General Electric ( new and older styles ), RCA, Hotpoint, Moffat & McClary
Frigidaire newer style top load washers
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