How to service lower unit on a outboard boat motor, Yamaha 90 2Stroke

[@TumboJ]

I actually plan on doing mine very soon!

[@martinsteflik1329]

Is that a Powertech SWW4 prop? What pitch is it and what kind of top speed and RPM are you getting with the Yamaha 90?

[@lightlinesgoodtimes]

yes, 13p , 33 @ 5-5400rpm