one more question for the experts :)

[jonnymarquis]

I have a 1977 70 hp evinrude. on the throttle cam assy. there is a mark that says start then there is a mark closer to the top that doesn't say anything. is that where it needs to be for "cruise". i do notice that WOT is past that mark and as you pull it back it closes the throttle valve some but does not make the spark advance go back. so am i right about that mark?

also i was told that on outboards that it doesn't matter if your WOT or putting 5mph that they use the same amount of fuel. and that the rule of thumb is 10% of hp is fuel consumption per hour. like a 70 hp burns 7g per hour.

now the question i have is does it burn 7g at 5mph and 35mph? or just at the higher end.

with the price at the pump going up just curious how to pinch a penny.

thank you guys!

 

[boobie]

Re: one more question for the experts

That would be 10 % of the hp at wot. Taking the mtr to wot and then backing off on the throttle to where your carb plates are almost closed and the timing still advanced is where you get the best fuel economy.