I have a 20 hp mercury outboard serial#06082001.I want to know what year it is and if it's 2 or 4 stroke
If you drop the first zero it would put it at 1981.
this site gives a different answer, as 1980- 81, so close. It SUGGESTS it is a 4 stroke engine.
It is likely a 4 stroke, but I won't give you a definitive answer, due to the damage it can cause with a guess!
A four stroke running with two stroke oil will just smoke, but a two stroke with no oil will seize and leave you stranded on the water with a seized engine!
A four stroke engine has valves operated by push rods or a pulley and a chain, a two stroke just has a head. Take a look at the engine and it should be obvious.
For your first service, I would suggest you go to a marine engineer. Ask all the questions, and get the right answers. When I had my 1986 Evinrude serviced, i typed a list of questions and left the list with him. i asked him when I picked up the boat and wrote the answers down. The first one was 'petrol to oil ratio and which is the best oil'. A basic service will cost you a hundred bucks and you will have some comfort that you are unlikely to break down, 6 miles offshore with only a paddle :)
Mar 07, 2017 |