1956 Evinrude 7520

[bspeth]

Does this model have a sealed gear case?The manual is not clear on that.Thank you.

 

[F_R]

Well certainly it does. Or am I reading the question wrong?

 

[bspeth]

The manual said that some models don't have sealed cases,but it was unspecific on this one.No water in gear oil but not holding pressure either.It leaks from 6 lbs to zero in 20 seconds.I can hear the leak by the water pump somewhere.Guess I will find out when I separate it to do the impeller.The only seal in that area I could find on the parts diagram is the gear case to bearing housing gasket p/n 303339.Is that the upper seal to the gear box? Tha manual mentions a drive shaft seal but I cant find it on a parts diagram.If you have a suggestion I am all ears.Thanks

 

[boobie]

What manual do you have ??

 

[bspeth]

The cover says Evinrude service manual fourth edition.My dad found it some where. Most of it is specific to the fleetwin,but some of the details are contained in bullitins I don't have.Pressure testing is not even mentioned in the manual in the gear case section.The manual covers all of the 56 7.5 models. got an original owners manual too and a parts book.