How do I grease the drive shaft bearing?

[tooljunkie60]

I have a 2007 Seadoo GTI-SE 155HP. How do I access the drie shaft bearing for applying grease? This is the bearing located just forward of the hull drive shaft penetration. It There is a short stiff rubber boot with hose clamps on both ends. I can't move the boot to see inside.

 

[seadoosnipe]

Boot.....?

What your looking for is either going to be before or behind your boot. Most Rotax motors have a zirc fitting in the PTO hub for greasing the shaft where it's coupled to the motor. I don't believe you have a fitting that passes through the hull. It's usually lubricated by your seal water.

I'm not super familar with your hull design but look on the back side for a zirc fitting around the drive shaft. If you don't see it, then look for a piece of plastic that covers the shaft behind the motor. There should be a couple wing nuts holding that shaft protector on. Take it off and look at your PTO. That is where you should find the zirc fitting for lubricating.......:cheers:

 

[Jet Set Performance]

The 4-tec engines don't use a greaseable driveshaft bearing assembly, they use what's called a "carbon seal" set up. The boot that is clamped to the inside of your hull is an acordian style, on the other end of the boot is the carbon ring. That rides against a stationary ring seal assembly that is held in place on the driveshaft by a "c" clip. The accordian boot provides enough pre-load to seal everything up & prevent leaks. Believe it or not, the water you're riding in provides lubrication & cooling for the carbon ring set up, which is why you should never flush your engine any longer than 3 minutes maximum, because you can overheat & damage that set up. Where in NJ are you located? Hope this helps out.

 

[seadoosnipe]

PTO grease fitting...?

The 4-tec engines don't use a greaseable driveshaft bearing assembly, they use what's called a "carbon seal" set up. The boot that is clamped to the inside of your hull is an acordian style, on the other end of the boot is the carbon ring. That rides against a stationary ring seal assembly that is held in place on the driveshaft by a "c" clip. The accordian boot provides enough pre-load to seal everything up & prevent leaks. Believe it or not, the water you're riding in provides lubrication & cooling for the carbon ring set up, which is why you should never flush your engine any longer than 3 minutes maximum, because you can overheat & damage that set up. Where in NJ are you located? Hope this helps out.

I was pretty sure he was referring to the zirc fitting on the splines at the PTO hub. Most skis, two strokes included, use the carbon ring and seal set-up. The majority only have the one fitting on the PTO hub for greasing the splines of the drive shaft. I did not get the impression he was referring to the "thru hull" fitting area.......but, maybe I'm wrong. Maybe he's looking for something that isn't there....:cheers: