You experienced guys please ignore this, it's intended for noobs like me
How I found parts for my boat? (Thank you tpenfield!)
Lets start with the motor and outdrive. They both have serial numbers respectively. Honestly, they are not hard to find. However, a google search would return an accurate location for your rig. My outdrive serial number was located on the starboard side of my drive housing if I remember correctly. The engine serial number was near the top of the engine on the side. The engine serial number should start with 0 or 1 followed by a letter then 6 numbers. For example my engine serial number is
0B430075.
If you go to mercruiserparts.com select
?search with pictures?
then select the desired product line
(I would choose ?Mercruiser Sterndrive & Inboard (Includes Diesel) & Mercury Racing?)
then select a category
(I would choose ?4 Cylinder Engines?)
now select a model. This is where knowing your engine horsepower and year comes in handy.
(I would choose ?140 GM 181 I/L4 1982-1986?)
now you select a serial number range
(I would choose ?6229718 THRU 0B450800?)
As you can see my engine serial number falls within that range. The advantage of mercruiserparts.com is that they only have Genuine Mercury Marine parts (OEM = original equipment manufacturer). So its kinda like being at the root where all other aftermarket manufactures will reference the OEM part # against their own aftermarket part #.
For example, lets say I need an ?Oil Pressure Sender Assembly? and the OEM part number is ?8M0068784?. You could then go to ebay or the parts house of your choice and search for ?8M0068784?. By using the OEM part number to search you will get hits for the OEM part as well as aftermarket manufactures version of the same part (if available). Remember, the aftermarket manufacturers will advertise the part with their part number but will always include the OEM number for reference.
Some popular aftermarket manufactures are SEI, Sierra and GLM.
The same process applies to your outdrive, rinse and repeat.
Another tip is
get a manual! The exploded views and info contained within are vital when part searching. Manuals used to be a free download but I think Mercury is now charging for them. If you search enough you may find a free one here or there.
My 1986 Sea Ray is kinda old now so non engine / outdrive parts are scarce. I would recommend doing a local search for boat wreckers, and boat parts. Chances are one of those may have a part or know of a spot locally where you can go and take a look around. Sometimes used parts aren?t so bad you just may have to clean them up a bit. Also check ebay and craigslist but be extra cautious when ordering from individuals.