yamaha703 70hp outboard

[davidspokes]

where do I find the drain plug on the Yamaha 703 70hp outboard thanks

[99yam40]

can you tell us what exactly is a Yamaha 703 70hp outboard?

[boscoe99]

Yes, and what it is that is to be drained.

[TownsendsFJR1300]

Model #and year would help too..

[davidspokes]

Yamaha outboard 70 hp

Hi the engine is from the 90s it's for the oil in outboard need to check it thanks dave

[TownsendsFJR1300]

All I could find for the 1990's, 70hp are TWO STROKE engines. There's oil in the auto lube tank, in the lower unit. ???

Is it a four or two stroke, should be a model # on a plate on the side of the transome bracket.

If not snap a pic and post it...

[davidspokes]

yamaha 70hp

thanks scott will do

[davidspokes]

yamaha 70hp

hi scott
i think its 4 stroke i have found one plug on side of bottom of engine
the number i got was 70 BET 6H3 L 350545

[JohnOrrett]

According to my book, that serial number range equates to a 1985 model.

Regards

John

[TownsendsFJR1300]

If it has a dip stick in the crankcase, usually yellow, and oil reqisters on the Hash marks on the stick, (Like your car), its a 4 stroke.

If it has a rubber looking drive belt running inbetween the crankshaft and two larger pulleys, its a 4 stroke.

The drain plug for the engine oil is usually recessed into a rubber tube, toward the rear of the engine. The tube would be angled outward and large enough to reach a socket in there (probably a 14mm).

For the 1985 models, I could only find a 2 stroke in the above fisch look up.

A picture uploaded from your computer would make things much easier....(Under the cowl hood)

Where/ what country are you located in?

[boscoe99]

A 6H3 prefix Yamaha is a 70 two stroke.

Carburetor drain plug?

Lower unit drain plug?

Oil tank drain plug?

703 is one model of a control box.

[TownsendsFJR1300]

A 6H3 prefix Yamaha is a 70 two stroke.

Carburetor drain plug?

Lower unit drain plug?

Oil tank drain plug?

703 is one model of a control box.

Well the two stroke part helps, tks...

Guess its 20 questions time!!


David, if you could answer the above questions, you could get your answer...

[davidspokes]

yamaha 70 hp

hi
thanks for all the information there is a black tube hanging I wondered what that was for I thought it had come unattached it must be for the drainage
I will try and get a picture put up
many thanks again dave

[TownsendsFJR1300]

Good luck what ever your doing....