Home › Forum › Ask A Member › OMC 3 cylinder "loopers" › Re: OMC 3 cylinder "loopers"
October 13, 2017 at 12:12 am
#66119
The 1970/71 60hp motors about drove me crazy until I found out they need L77JC4 spark plugs. They ran terrible with the surface gap plugs they came with. I’ll bet at least half of those "defective" amplifiers were not bad at all, but were replaced under the "it’s always the black box" mentality.