A little help with a Yamaha 6hp 2 stroke

[mikedefieslife]

Hi,

I have recently got hold of an old Yamaha 6hp 2 stroke outboard. Unfortunately I cannot for life of me figure out exactly which model/year it is. The whole unit has been poorly sprayed, which means some of the stickers/decals aren't really readable.

Looking at another thread on here I did find a black sticker with a white box stuck to the block 7 digits long so that could be it.

1) Is there a database anywhere I type the 7 digits into to check? Most things I've seen want a sequence of letters and numbers.

2) I have the PDF manual for this, and also 8hp. Both manuals reference the 'Trim rod' for setting the trim. I have the holes but I don't have the rod, and looking at the parts fiche for both the 6 and 8hp 2 strokes from 86 and into the 90s, I cannot see any trim rod in there for either model.

3) Finally, I noticed that the steering is a bit stiff. I have greased it up using the two nipples, and loosened the steering friction adjuster, but it's still not as light to steer as I like. Could be as it's a much heavier motor than I'm used to (I usually run a 2.5), but I'm not sure.

Any help would be appreciated. Thanks

[walleye1]

Try to spray some carb-brake cleaner on a rag and wipe on where the primary id is supposed to be but
wipe gently.

[boscoe99]

What are the seven numbers that are on the block?

[mikedefieslife]

What are the seven numbers that are on the block?

1000783 on the circular sticker

[walleye1]

boscoe will get it.

[boscoe99]

Looks to be an early 1990's model.

Here in the USA a 6 HP two stroke was offered from 1986 thru 2000.

Item 20 in this illustration is shown as the tilt rod assembly. Called a tilt pin in the service manual.

https://www.boats.net/catalog/yamaha...mlht/bracket-1

[panasonic]

Perhaps you could take a picture of the engine that would help narrow it down a bit.

[99yam40]

if the serial # does not tell what year, I kind of doubt a pic will help much more

[boscoe99]

if the serial # does not tell what year, I kind of doubt a pic will help much more

If you have seen on 6 HP two stroke you have seen them all.

If you have seen one set of booobs, you are gonna want to see them all.

[99yam40]

I don't know for sure, but I think I have seen some I would not want to look at again if I had a choice.
but there are some I would like to see every day

we are talking about motors here right?

[mikedefieslife]

Be careful what you wish for. This might count as one of those you don't want to look at again

Needs a good sanding down and painting, it had been in a shed for a few years.

There is a number on the carb that reads 6H801 and a number etched into the cylinder heads reading 6N000.

[boscoe99]

I don't know for sure, but I think I have seen some I would not want to look at again if I had a choice.
but there are some I would like to see every day

we are talking about motors here right?

Ron White from Texas has the joke about the *****.

[boscoe99]

Be careful what you wish for. This might count as one of those you don't want to look at again

Needs a good sanding down and painting, it had been in a shed for a few years.

There is a number on the carb that reads 6H801 and a number etched into the cylinder heads reading 6N000.

Are you sure that it is an 8 and not a 6? If a 6, followed by H6 is the prefix for a 6HP two stroke.
https://www.boats.net/product/yamaha/6H6-14301-00-00


Look at the CDI for any markings. All USA 6 HP two strokes used a 696-85540-11-00 CDI. Should be marked with 696 XX.

https://www.boats.net/product/yamaha/696-85540-11-00

You should now have what you need to order replacement parts or to view the parts catalogs for assistance in repairs, if needed.

[mikedefieslife]

Yes on the carb it is definitely 6H8.

The CDI reads 696-11.

I noticed that the spark plugs are NGK BR6HS-10. I thought the manual calls for BR7HS-10?

As to the grease on the steering, This is new grease but I didn't clean it out using the rag method as mentioned first. I just attached the grease gun and squeezed until I saw grease coming out. Will clean it up and try again.

[mikedefieslife]

Gave it shot cleaning the grease out with some petrol. It didn't do a fat lot. I re-greased and turned the tiller back and forth a while. It's not much better, but I don't know how light the steering should be. My 2.5hp Mariner for example I can push easily full lock either side with my little finger (when it's stationary mounted on a bracket) The Yamaha takes a whole hand to turn, and seems to have some initial inertia. It's not the weight, as I've got it lying on the floor and I'm only turning the mounting bracket.