Spark plug

Please could somebody help - We don't have a torque wrench and we need to fit a new plug on a crf250x. Usually finger tighten then so many turns, (this to compress the new washer/seal) then loosen and tighten with so many turns (1/8 - 1/4 turn?)

If the new washer/seal is already compressed, it's finger tight, then 1/8 of a turn.


If it's not compressed, finger tight:


For NGK: 1/2 turn

For Denso: 1 turn


Then loosen, finger tight, and 1/8 of a turn.



Edited by JimDettman

BTW, personally, even though the manual says a full turn on the Denso, I don't think I've ever gone more then 1/2 - 3/4 turn on a new plug.


Always though finger tight and 1/8 on a compressed washer/seal.



Jim, thanks for the help.

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