Re: 1973 Evinrude Fisherman 6 won't throttle up
Howdy, Fireboat. Your symptoms are pretty common, and have two most common causes:<br /><br />1. Fuel starvation caused by a failing fuel pump or a gummed up carb. If pumping your primer bulb gets it runnning it will confirm fuel starvation.<br /><br />2. Loss of power in one cylinder due to loss of compression, reed valve sealing, or spark. Pull your plug wires, one at a time, while it is running. If the engine slows or dies that cylinder is good. If no change, that cylinder is dead.<br /><br />If you have a dead cylinder, hold the plug wire 1/2" from the block. If you get an arc, the spark is good and the problem is either with compression or reed valve.<br /><br />The above might not isolate the trouble. If that happens, tell us what you have found and we will take it from there.<br /><br />My book doesn't cover the '73, but earlier models in that same line used .030 plug gap, and so did later ones. I think .030 is safe.<br /><br />Good luck and let us know what happens.<br /><br />Red sky at night. . . <br />JB
