Originally Posted by spartacus
The fibre washers on the drain and fill plugs are often overlooked. Tohatsu have a specific part and it's well worth renewing. Part number: 332-60006-0. Use a decent flat head screw driver to torque them. If the gear oil has the appearance of mayo at the next service, then the problem lies elsewhere.
Thanks chaps. This is a good point and I have new washers here and ready.
Outboard mechanic came out to service...it was pathetic so ordered some parts in myself to do properly.
Did water pump refurb rather than just impeller as dont know when it was all last done. Replaced trim tab anode. New spark plugs. Greased all moving parts. Cleaned and protected all electrical terminals.
Since the guy changed gear oil, engine has only ran in barrel for 10 mins and sat in it half the day when full of water. So am surprised by the water ingress for such short immersion.
I'm hoping it is just the plug washers since he didnt renew them. Driveshaft seal appeared in very good nick but if its milky again after next outing will change that along with any propeller seals. Unfortunately suppose that will mean replacing water pump gaskets again after only changing!
One oddity I encountered...ordered the correct genuine Tohatsu impeller yet the impeller that was installed seemed much beefier and better made...metal core, thicker rubber etc??? Replaced it with the Tohatsu genuine part which seems flimsy in comparison.
To be fair engine has obvious new parts and gaskets here and there etc and has excellent and even compression so itmsems to have been well looked after and little used.