Re: Servicing the sport jet 90 gearbox
The only service necessary is changing the lube oil, done by removing the vent and fill plugs.....lube in stator also.
Are you trying to do more than a routine service, you can pull pump components (nozzle, wear ring assembly etc) off then ride plate and get at drive housing as in chapter 5 page 6 of service manual.
What exactly in the "outdrive" do you wish to service, few more details and we'll try to help. Common prob is the impellor/wear ring clearance, is that what you want to check/service?