https://maxrules.com/models/Merc_model_files/15-25.php

The above link should help you out

Service manual possibly. I found an “A” and “D” series service manuals. Unfortunately they don’t supply much information on which manual covers what years.
...

https://www.mercurymarine.com/en/ca/parts-and-accessories/parts-catalog

This link will have all the part numbers you’ll need.

https://www.boats.net/catalog/mercury/outboard/18hp

If your...

77
http://www.marineengine.com/boat-forum/images/misc/unknown.gifjgmo
http://www.marineengine.com/boat-forum/images/statusicon/user-online.pngOutstanding...

Road test was a resounding success. Two new spark plug and a bit of “tightening” the plug boot no more miss. Could be me my imagination but it seems I’ve picked up a bit more speed at WOT. Many...

http://www.marineengine.com/boat-forum/showthread.php?386743-rotation-change

A bit more information is required. Year, hp, model, any history on the engine, maintenance or otherwise? The more information you provide the better your chances of getting a response.

Wife is smart, not the smartest since she married me!

I have a high tolerance to electricity, I don’t feel electric cattle fences.

Last time I had the plugs out I did notice there was no...

Pulled the top plug boot, engine died. Repeat top plug test, engine died. Pulled bottom plug lead, no change, engine keep running. Repeat bottom plug test, engine keep running. Gave both plug boots a...

Well a second test run was interesting. Ran WAY better for reasons unknown to me. I still have a bit of a miss but we’re heading in the right direction. I had the spark plugs out a while back to give...

In a barrel started 2nd pull, no fuel leaks. On the lake ran like crap, idles okay but that’s it. Give it throttle in neutral and it revs up nice, put it in forward under load and the engine doesn’t...

No, it’s not the carburetor but the throttle cable has “twisted” about 20-30 degrees inside the throttle cable outer protective sheath. With the throttle cable twisted then the pivot(black plastic...

Ignore the first paragraph above, got my parts mixed up

Another couple of questions:

Ended up buying a new carburetor while I was in the states and a new Carburetor Insulator. The existing insulator, (installed in the factory) is made out of the same...

https://www.selffixer.com/outboard.motors/suzuki/1996-2005.DF40.50.Service.Manual.htm

Above link might help, a genuine Suzuki service manual. I’ve purchased service manuals from this website and...

Yes I have, just bought a carburetor from them, the idle mixture screw I was looking for said 2-3 days on the website, called them and they told me end of June maybe. They couldn’t tell me when they...

https://www.boats.net/catalog/suzuki/outboard/40hp/df-40tlk3-beginning-vin-04001f-371001/water-pump

See part #17, Key. As far as a black ribber collar I have no idea. I thought it might be an old...

Check for parts before you break anything. For my Honda 9.9 common carburetor parts like the idle mixture screw mentioned above and commonly discarded gaskets and orings are up to a 2 month wait in...

If you go to boats.net, find your engine model number, select your lower unit in the parts section then scroll down to the bottom where you’ll find a list of all models your lower unit will fit.

https://www.suzukioutboardforum.com/filedata/fetch?id=54175&d=1583952114

Maybe this will help