Mercury 4 GNAT Dumpster dive!!!!! Can't find any info or parts Help please

My wife showed up one day with the biggest smile on her face. "Come see what I have in the car" she said. There was a very new looking mercury 4 in the front seat. I am now getting around to working on it.
It's been sitting for a few years and looks like it has not seen much use.
Serial number is 5928125 2 cyl and the only information I can find is that it is from 1980 - 81 and is called a GNAT. It won't need much. there is a broken knob, probably a carb rebuild, and hopefully the ignition is ok.
On the plus side, I took the cover off and found no mouse nest, no dirt, even the plugs looked new. The ignition says "Thunder Bolt 2" on it. Spark plugs are RL82YC. Any direction for parts would be appreciated.
Thanks
Doug

Serial number 05928125 is a 1980 MERCURY 4 ML Model number 1004220.
Parts catalog 90-90686 - 4 H.P.
http://www.boats.net/parts/search/Merc/Mercury/1980/1004220/parts.html

That motor was not in the top 10 on the " hit parade "-------------If it runs then great, if not then you know why it was thrown out.---When a product is only marketed for 2 years there is a reason.

boat_tech said:

Serial number 05928125 is a 1980 MERCURY 4 ML Model number 1004220.
Parts catalog 90-90686 - 4 H.P.
http://www.boats.net/parts/search/Merc/Mercury/1980/1004220/parts.html

Click to expand...

Thanks for the quick reply. I'll see about getting this running.

Sorry to hijack a little, but anyone got or can tell me where to find the wiring diagram for the Gnat motors please.

I need colour of wires and where they got to. It's a simple little motor and I done something really silly. Dismantled all three motors and promptly forgot where the wires go.
Thanks in advance