TRX 450R motor

[Uncle Spike]

Can anyone tell me what the little hole in the right hand side of my engine is for? :confused:

[Colby@C&DRacing]

Depends on which one you are talking about. The one that has the allen head in it is used to access the timing gear. The smaller hole is for checking the tranny oil level.Or the one on the cylinder is a drain for the spark plug hole in case water gets in there it can get out:)