Is this hole supposed to be there?

parkerCR

Member
Nov 8, 2001
170
0
I was washing my 2004 CRF 450 and noticed a hole on the cylinder right above the header. Approx. 2" down from the "m" in Unicam and about 1" over, Is there supposed to be a screw in there to keep water out? Or is this a drain hole for the spark plug? Should it be covered when washing the bike?
 

evenslower

~SPONSOR~
N. Texas SP
Nov 7, 2001
1,234
0
Drain hole for spark plug. I slide a golf tee (knew they would useful one day) in there when I'm washing just in case.
 
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