I guess we could all spend a lot of time searching for and then quoting the relevant oil filing instructions from the many BS publications.
I would be surprised if they didn't 1.Change over time, and 2. State different methods.
For non sealed small gearboxes; in order to keep it simple and to reduce the chances of creating yet more rusty ruined gearboxes, I think the following procedure is best for both the experienced owner, and more importantly, the new owner:-
Drain the old oil out. Lay the engine down horizontally on its tank. Fill up* with with SAE140.
After use, drain and refill.
(*Either fill right up or leave a small air pocket, whatever your preference)
Jeremy
oil leak
Moderators: John@sos, charlesp, Charles uk, RickUK, Petergalileo
Re: oil leak
I don't know if it is another seagull rumour but I remember reading the reason for the oil filling routine ie standing the motor up so as not to over fill it was started early on in the piece because when the gearbox was completely full they would leak oil on the show room floor, from this it was decided as it wasn't a good look it was decided to lower the level to stop the leak, but doesn't everything british leak somewhere.
Also from using them lots and doing lots of long runs I have always filled them right up on my 102, lls, 4+ ,silver century etc and never had a problem
Also from using them lots and doing lots of long runs I have always filled them right up on my 102, lls, 4+ ,silver century etc and never had a problem
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Mike Killay
- Posts: 37
- Joined: Thu Jul 31, 2014 1:16 am
- Location: Swansea
Re: oil leak
Thanks Charles.
I was wrongly advised and bought 90 oil, I have 140 on order.
My guess is that the 'leak' was unburnt oil from the combustion chamber gathered in the exhaust.
I have now used the engine quite a bit and can say that I am a convert.
Seagulls obviously have their draw backs, mainly leaking here there and everywhere, but I am slowly working on that.
I sail a small 11 foot boat and need the engine to live on the floor boards. I would have bought a new 2.5 hp engine to replace my Mariner, but they are heavy, bulky and leak oil if put down on the wrong side. I simply do not have enough room for one. I have a 30 year old 2hp Mariner still running well and would love to be able to buy a new one, but the EU and USA have put an end to 2 strokes that are light and powerful.
The Seagull with the odd number that I have is in very good condition and likely to see me beyond my sailing days. Further more, I have discovered its flexibility in that I have a 40 plus leg so I can ring the changes at will.
I was wrongly advised and bought 90 oil, I have 140 on order.
My guess is that the 'leak' was unburnt oil from the combustion chamber gathered in the exhaust.
I have now used the engine quite a bit and can say that I am a convert.
Seagulls obviously have their draw backs, mainly leaking here there and everywhere, but I am slowly working on that.
I sail a small 11 foot boat and need the engine to live on the floor boards. I would have bought a new 2.5 hp engine to replace my Mariner, but they are heavy, bulky and leak oil if put down on the wrong side. I simply do not have enough room for one. I have a 30 year old 2hp Mariner still running well and would love to be able to buy a new one, but the EU and USA have put an end to 2 strokes that are light and powerful.
The Seagull with the odd number that I have is in very good condition and likely to see me beyond my sailing days. Further more, I have discovered its flexibility in that I have a 40 plus leg so I can ring the changes at will.