I have an 81 Evinrude 7.5HP short shaft motor. When you open up the throttle about half way the motor over revs and loses propulsion. When you come off the gas it seems to pick up propulsion again with no issues.
I have taken the leg off for inspection and the bottom end looks good. There were no chunks of metal or teeth missing at the top of the drive shaft. Is there more than one issue that this could be or is this definitely an issue with the base of the crank that the top of the drive shaft connects to? If that is the issue, I just don't understand why the motor would have propulsion at low RPM? Wouldn't it just slip all the time?
I have also checked the prop hub and that is not the problem.
Can anyone recommend a resource that would guide me through taking off the upper part of the leg so that I can inspect the base of the crank?
Thanks all!
I have taken the leg off for inspection and the bottom end looks good. There were no chunks of metal or teeth missing at the top of the drive shaft. Is there more than one issue that this could be or is this definitely an issue with the base of the crank that the top of the drive shaft connects to? If that is the issue, I just don't understand why the motor would have propulsion at low RPM? Wouldn't it just slip all the time?
I have also checked the prop hub and that is not the problem.
Can anyone recommend a resource that would guide me through taking off the upper part of the leg so that I can inspect the base of the crank?
Thanks all!