It's a bit late to be thinking about servicing an outboard, you should have done that as soon you finished using it at the end of last season. However I would expect any 4 stroke outboard engine oil to be suitable but no doubt your Yammie dealer can sell you some Yammie branded stuff Similarly I expect any high viscosity (SAE 80W-90 EP ) outboard gear oil to be suitable. Again your Yammie dealer will sell you some Yammie branded stuff. Bushmaster Ar 15 Manual download on this page. The manual will tel you how to drain the oils and how to refill engine and gearcase. I recommend you get a replacement manual! It's for the USA models but may be helpful. Carry out all the recommended maintenance items.

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