tohatsu 2 stroke

simon23 · 30 September 2012, 21:19

Ive just bought a new to me rib it has a old 90hp 2 stroke tohatsu with auto-lube on the back.if i want to pre-mix the fuel does anyone no if i have to do anything to auto-lube other than to drain tank ?

Poly · 30 September 2012, 22:53

Quote:

Originally Posted by simon23

Ive just bought a new to me rib it has a old 90hp 2 stroke tohatsu with auto-lube on the back.if i want to pre-mix the fuel does anyone no if i have to do anything to auto-lube other than to drain tank ?

I doubt you can just drain the tank - I would expect there is a sensor which will know it is low on oil / not pumping oil and so put the engine into limp home mode.

I guess the obvious question would be: why disconnect it? do you believe it is faulty or just worried it might get faulty? does that particular model have a known issue?

simon23 · 01 October 2012, 06:52

Im just worried it might go faulty as i think this is what killed my last outboard!!!!!

Salty · 01 October 2012, 08:57

Quote:

Originally Posted by Poly

I doubt you can just drain the tank - I would expect there is a sensor which will know it is low on oil / not pumping oil and so put the engine into limp home mode.

I guess the obvious question would be: why disconnect it? do you believe it is faulty or just worried it might get faulty? does that particular model have a known issue?

My Yamaha autolube will only let the engine rev to 2,000 RPM if the sensor is activated and a warning light flashes

Poly is correct, the engine goes into "safe mode"

I bought an old Suzuki Autolube and didn't have the owners manual, so for the first few times of using it put a 100:1 mix in the fuel and marked the level of the autolube tank with a pencil just to check it was drawing the oil out of the tank as it should.

Maybe you could do that until you are confident in the engine?

simon23 · 01 October 2012, 10:04

I am still trying to find someone near anglesea to confirm my yam is dead .i ran it for 2 years with autolube working fine then one day engine just stopped and been told it sounds as though it started to sizie.not a big deal to premix so i felt it would give me some peace of mind on oil in engine at least!

9D280 · 01 October 2012, 12:29

Simon,

It will either be siezed or not.

If you pull the lid off the yam, take the plugs out, put it in neutral (disconnect the batery first & all the other helath & safetry stuff

) - can you turn the flywheel by hand? Without the plugs in it should go round smoothly & should go round without lots of horrible grinding noises.

If it makes scary noises or feels incredibly rough to turn, a quick visual way of checking damage it to take off the inlet and / or exhaust manifolds - then you can shine a torch into the cylinder & see the damage (or not) first hand.

Not had the pleasure of a Yam autolube, but my old Suz had a flow sensor in the oil line that also brought it to a grinding halt if the pipe blocked or the pipe fell off the bottom of the tank. An empty tank would also "trip" it. Might be worth checking the sensor(s) & their wiring / connectors on the Yam as well. (is the tank level float still floating?)

simon23 · 10 October 2012, 19:06

Thanks for your reply hav'nt tried anything yet only get to my rib at weekends.i picked up my new rib this weekend and could resist going out in it!!!!!