1973 Evinrude 4 HP Lower unit lube 4336 C

[zzr7ky]

Hi. Trying to change Lower unit lube on 1973 Evinrude 4hp model 4336C. I see only one lube vent, obviously the lower vent. Where is the upper vent so I can change the lube?

 

[hardwater fisherman]

The standard gearcase has only 1 drain fill screw I believe.. the seedless drive has 2.

 

[hardwater fisherman]

Weedless drive not seedless. Darn autocorrect on phone.

 

[racerone]

edited

 

[zzr7ky]

Thanks! Lube changed. Seal kit before Spring!