'72 18HP Problems

[DrillerDave]

Motor will Rev up fine in neutral(most of the time, sometimes it won't) but when it will I will then switch to forward and try to accelerate and it won't rev up. I have the 18hp on a 12ft aluminum so it should go pretty quick, this won't even plane out with two guys, the gas tank, 2 oars and 2 lifejackets! Im a complete noob when it comes to outboards.

[boats.net]

Have you checked spark and compression? If those are good, remove and thoroughly clean the carburetor.