Starting a new old stock outboard

[Jrussell767]

Hello, I was hoping for some advice . I just purchased a new in the box 1986 Yamaha FT 9.9 EXH. It was stored in the garage of the original purchaser since he purchased it new in February 1987. Should I be concerned about anything or do you think it's OK to put oil and fuel in it then fire it up? I was going to crank it over with the deadman switch out to help get the oil flowing or maybe pulling the plugs out and give it a shot of lubrication? Your advice would be helpful thank you.

 

[tpenfield]

Four Stroke (right?)

I would spray some fogging oil into the cylinders and then spin it a bit with the starter (Pull start ?)

Not sure if you can invert (or tumble ) the engine once you put motor oil in it to get the lubrication all around the crankshaft.

Once you get some lubrication going (primed with the starter while the plugs are out), then you could try to fire it up.

 

[jimmbo]

When you say in the box, do you mean the engine has never run?

They fog them at the factory, but 37 years... Well that is assuming it has never run. It was run and then placed into storage, all bets are off about it having been fogged.

Spraying oil in the cylinders does lube the cylinder walls, and not much else. To get oil on to the crankshaft and connecting rod bearing will require a small amount of oil rich gas-oil mix sprayed thru the carbs while cranking the engine. Removal of the spark plugs will allow the expulsion of the mix and allow the engine to spin faster.

 

[GA_Boater]

Welcome aboard.

I would do all the above. Hopefully the box also has the owner's manual with break-in instructions.

BTW - According to the Yamaha site, an EXH is a 1987 model and they charge 18 bucks for the manual.

 

[fhhuber]

Spray (not much, just wet the cyl walls a bit) the fogging oil in the spark plug hole then use one of the really long "Q-tips" doctors use to swab your cheeks to see if it comes out rusty.

No rust and you're golden.

 

[ondarvr]

It won't start without fuel in it, if there's fuel in it then there's oil in it, if there's no rust in it it will run for a long time, if there's rust it may not, if you find rust the entire motor will most likely need to be rebuilt, so it doesn't make any difference if you start it before doing anything to it or not. So connect the fuel line and see what happens.

 

[Jrussell767]

This outboard is brand new in the original box . Motor was placed in a plastic bag then put into styrofoam molded box with a thick Styrofoam molded lid . It is a 4- stroke. No signs of rust on anything even a little 3 gallon fuel tank a little cheap set of tools they give you no rust at all .

When you say in the box, do you mean the engine has never run?

They fog them at the factory, but 37 years... Well that is assuming it has never run. It was run and then placed into storage, all bets are off about it having been fogged.

Spraying oil in the cylinders does lube the cylinder walls, and not much else. To get oil on to the crankshaft and connecting rod bearing will require a small amount of oil rich gas-oil mix sprayed thru the carbs while cranking the engine. Removal of the spark plugs will allow the expulsion of the mix and allow the engine to spin faster.

 

[fhhuber]

Should be perfect. Change the oil and if you are paranoid change the water pump impeller. (I'd call a dealer of that brand and ask if the impeller fails from just age on the shelf. Some do but that's older materials.)

 

[ondarvr]

Being a 4 stroke is a little different, but after a few pulls it will have oil in most places.

Once you know it starts and runs then worry about changing the impeller. This doesn't mean wait two months, just make sure it starts before doing any other work.

 

[Jrussell767]

Being a 4 stroke is a little different, but after a few pulls it will have oil in most places.

Once you know it starts and runs then worry about changing the impeller. This doesn't wait two months, just make sure it starts before doing any other work.

The outboard is rust free! i live next to a auto repair shop and they let me borrow tools. They have a micro camera that fits into a spark plug hole. It was shinning like a new dime in there. I all so put it in the oil fill hole, same thing. So I sprayed some fogging oil into the cylinders. Added the recommended oil. Removed the dead man switch and cycled the electric starter for 5 sec. ,waited 30 sec. , cycled it for 5 sec. waited 30 sec. did this10 times to get the oil flowing . hooked up the gas line and hit the starter button. it cranked maybe 3 sec. and came to life. It was a little smokey for a minute or 2. Smoke cleared, pumping water strong , green light on and idling smooth as glass. this was a great find. It came with all the original papers and brochures,warranty card, tool kit, fuel tank and 2 extra spark plugs. I all so received a Yamaha hours meter, a Yamaha Remote start and a outboard cover all seal in the packages. I almost forgot the deal came with a store bought outboard stand and a 1956 Evinrude 15hp with it pressure tank and all its paper work and its in great condition . Tomorrow starts the 10 hour break-in period the manual states, i will post a few pictures later . $700.00 for everything !

 

[Jrussell767]

No Title

 

[Jrussell767]

No Title

 

[Jrussell767]

No Title

Hope it pushes my 1973 Starcraft SuperSport decent . I now can head to a local lake that has HP restrictions .

 

[jimmbo]

Sorry I assumed it was a two-stoke. In 86 I thought only Honda made 4 strokes

 

[boscoe99]

1986 Yamaha FT 9.9 EXH

An F or a T preceeding the HP rating indicates that it is a four stroke. F for four or T for High Thrust, which are always four strokes.