See full version: 1976 75 HP Evinrude runs good but won; t run full throttle
If all of the four area above are okay, and especially if the engine has been sitting for some time, remove, clean, and rebuild the carburetors using complete carburetor kits. Even if you've rebuilt them yesterday, it's possible that you've overlooked something.
I have changed the spark plugs, bottom of the three seemed more dirty than the others but nothing too crazy. more
Compression: Normally have all of the spark plugs removed BUT if the bendix gear kicks out of the flywheel constantly install all of the s/plugs excepting the cylinder you're checking at the time. Let us know what the individual psi readings are. [links]
when I bought it, I noticed the main fuel line came in the bottom carb. and the gas hose bib was so close to the bottom cowling that the fuel line was pinched. I moved the bottom carb to the top to help this pinch issue. that made no change in the peformance.
I have also replaced all the fuel lines on the carbs. and the fuel tank/hose is new
Timer Base: With the engine NOT RUNNING but in forward gear, have someone advance the throttle slowly from the idle position to full throttle while you observe the timer base. It should advance smoothly throughout that travel range. If it sticks, find out why and correct that restriction.
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In this digital age, many people rely on the internet to get information about products and services. more
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Service Type: Major Service
420 full service in my driveway.
pete and dan are professionals and look after u always, and nothing is too much trouble for the boys and believe me i,ve tested them haha, with my wish lists etc, here
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