Mariner (Yamaha) 30 Lower Unit

[HughN]

This follows on from the thread about water in the lower-unit: could I do some more brain-picking please?

The driveshaft seal does look pretty knackered.



Which way should I be undoing the gear selector connector? Winding it downwards it hits the jam-nut; winding it upwards it comes to a halt.



The bits that really stink of gear oil are the small ports on either side of the lower unit. I thought these were to do with the exhaust, so I'm not too sure how gear-oil might end up there? (Those on the other side are worse in terms of brown residue)



This had a head-rebuild, new impeller, etc., 18 months ago. And 'yes' it could do with a re-paint.

Thank you,

Hugh

[bartiny]

When I removed my gearbox to change impeller I selected reverse gear just cracked the lower lock nut so that when I refit it would be set right then undid the long nut until it detatched very easy and no refit problems.







HTH

[bartiny]

Sorry should have said that both pictures show selector in reverse gear position

[HughN]

Thanks.

[biffer]

I think I have a gearbox somewhere. There is a chunk missing out of the trim plate but the rest is there

[HughN]

A pressure test showed the leak to be through the bellows on the shift-linkage - a minor seal, but important none-the-less...