Search results

  1. D

    Power Pack Test

    Does anyone know the correct steps to test a power pack on a 1981 75 hp Evinrude?
  2. D

    Spark Plug Wire

    Does anyone know what the OHM (resistance) reading should be for spark plug wires on a 1981 75hp Evinrude?
  3. D

    Fireing Order

    Does anyone know what the fireing order is for a 1981 75hp Evinrude? I can't find that information in my manual.
  4. D

    Rpm's Increase When Plug Wire Is Pulled

    Does anyone have any suggestions as to why when the plug wire on #1 cylinder is pulled while the engine is idling the rpm would increase; pulled on #2 little or no change in rpm, pulled on #3 engines dies? Each plug wire was placed back on the spark plug before pulling the next one. I have...
  5. D

    Ignition Question

    Does anyone have any suggestions as to why when the plug wire on #1 cylinder is pulled while the engine is idling the rpm would increase; pulled on #2 little or no change in rpm, pulled on #3 engines dies? Each plug wire was placed back on the spark plug before pulling the next one. I have...
  6. D

    Ignition Problem

    Can anyone help? I have a 1981 75hp Evinrude all three carb's just rebuilt, linkage and cables are correct, timing and carb's are in sync all according to the manual. Compression test shows number 1 cylinder 119, number two cylinder 120, number 3 cylinder 121. Compression check ran twice using...
  7. D

    Proper Spark Plug Gap

    On a 75 HP 1981 Evinrude what is the correct spark plug gap? I have two different manuals for this motor; one manual calls for a 0.040 gap and the other manual calls for a 0.030 gap. I currently have the gap set at 0.030, if the gap is set to close will this cause any problems?
  8. D

    Motor Dies in Gear

    Hey everyone, My 1981 75hp Evinrude dies when I put it in gear. I have rebuilt all three carbs, set the timing, synchronized, all by the manual, but when I set the idle to the recommended 700-750 rpm in gear in the water and unrestricted the motor will die. WOT is great top out at 5000 rpm, good...
  9. D

    Water in #2 Cylinder

    I have a 1981 75hp Evinrude and I am getting water in the #2 Cylinder. I have pulled the exhaust plates off had them resurfaced so they are good and flat, replaced and sealed the gaskets, torqued to spec's, replaced head gasket but still getting water in #2 cylinder. Need advice can anyone help?
  10. D

    Carb Float Adjustment

    Does anyone know what the carb float adjustment (settings) should be on a 75hp 1981 Evinrude. Fuel is bubbling back up into the throat of the carb and running out while idling on the muffs. I rebuilt the carbs and only having this problem on the bottom carb. I was told that the float is out of...
  11. D

    CARB PROBLEM

    What will cause the bottom carb on a 1981 75hp Evinrude to spray fuel out the throat of the carb back into the air silencer? All three carbs were rebuilt, I am only having this problem on the bottom carb.
  12. D

    Idle RPM

    I have rebuilt the carbs synchronized the timing etc on my 1981 75hp Evinrude. Does any one have any idea what a good ballpark idle rpm with ear muffs would be? I want to somewhere close on the idle before I take it to the lake to make the final adjustments.
  13. D

    Shifter Dog Thrust Washer

    I am in the process of replacing the lower unit seals and bearings on my 75hp 1981 Evinrude 20" shaft. It's been 2+ weeks since I tore the lower unit down and have been waiting on the parts. I am ready to reassemble the LU but I have a question about the Shifter Dog Thrust Washer. I have two...
  14. D

    Shift Rod Adjustment

    I am rebuilding the lower unit on my 75hp 1981 Evinrude, my manual gives the instructions for adjusting the Shift Rod length before the lower unit is reattached to the motor. According to the manual I should measure from the top of the lower unit housing to the center of the hole at the top of...
  15. D

    Carbon Buildup

    I just pulled the lower unit on my 75hp Evinrude, when I tool a look up the inner exhaust tube I noticed a lot of carbon build up. Should I try to clean the carbon out, if so what would be the best method.
  16. D

    Prop Shaft

    On 1981 75hp Evinrude how can I check to see if the prop shaft is bent also how much end to end and side to side slack is acceptable tolerance for the prop shaft.
  17. D

    Slack in Crankshaft

    I have a 1981 75hp evinrude and I was curious about possible slack in the crank shaft. When turning the flywheel clockwise by hand the engine feels tight but if I turn the flywheel by hand counter clockwise the flywheel will turn a good three inches before I can feel any resistance (tightness)on...
  18. D

    Air Slincer to Carb Mounting

    I just rebuilt the carbs on my 81 75hp Evinrude and as I was about to mount the Air Silencer to the carbs I noticed that the plastic Air Silencer was warped where it mounts to the carbs, I did a dry fit to the carbs (without the gasket) to see how much of a gap between the carbs and the silencer...
  19. D

    Flushing Lower Unit

    I am servicing my lower unit and the oil is extremely black, I was curious why the oil is so black, I bought the boat used a few months ago and I have only had it on the water 4 times. I drained the oil into a clear plastic container and drug a magnet through the used oil to check for steel...
  20. D

    Lower Unit Bearing Set Screw

    I was changing the lower unit oil on a 1981 75 hp Evinrude and took out the Bearing Set Screw instead of the upper fill plug to allow air in so it would drain, Can I put the bearing set screw back in with out any problems? I have not shifted into gear or cranked the motor, just drained the oil.
Top