Slipping

[kbayjim]

hi i just tried out my dt25j 1980s outboard on my 15' skiff. it seemed to slip at over 1/2 throttle. kind of like cavitation but more like splines or gears slipping. took apart the lower unit, everything looks fine, but about i/8" play between forward and reverse driven gears. could the drive shaft be slipping up under thrust?

 

[GA_Boater]

kbayjim Your new thread. Please read the Help Tip on top of the page.

Too bad you tore the lower unit apart without testing for a spun prop hub.

 

[kbayjim]

yep, rubber spline is wore out. took it to a prop shop he said drill tap and bolt thru the aluminum prop, rubber middle and brass female spline, but not thru the shaft. did it , 3, 1/4 x 20 bolts ready for testing.

 

[robert graham]

Maybe best to just go with a new prop for your motor....keep he old one for an emergency spare. Aluminum props for your motor may be around $60, more or less...