How do I Service a 70 HP Evinrude 1983 Model?
Servicing a 1983 Evinrude 70 hp outboard motor is not as complicated as servicing other Evinrudes. With an electronically controlled fuel injection system, the motor has no carburetor to tinker with. There is no need to adjust the fuel mixture or the idle speed. Since the engine is equipped with an electronic control unit that controls ignition, checking and adjusting the engine’s timing is likewise eliminated. If you can remove the spark plugs and test the engine’s compression, you’re in the home stretch Look the motor over, paying attention to anything that appears worn, cracked, leaking or damaged. Take the propeller nut off the shaft and check it for dings and nicks, and check the propeller hub for wear or damage. Replace the propeller if necessary. Remove the spark plugs, remove the emergency stop switch clip on the lanyard and thread a compression gauge into the No. 1 cylinder. Crank the engine over four times, noting the compression in the cylinder as you do so and compare the r
