I personally am sceptical about buying 2nd hand outboards just because I’ve had a few mates either fully submerge or not service there outboards and then sell them just before potential problems occur.
But on a positive note, for a 9 year old boat the Mako looks well looked after.
I have a 15hp outboard which I bought brand new and I’m OCD when it comes to flushing it out. One of my mates with a lifetime of experience with outboards services it once per year. But then I go to trade or sell it in years to come that all means nothing as a buyer has to come in thinking the worst.