98 Merc 40 HP, 2 stroke, 3 cylinder, SN : 74587X

[Spooney]

Hello, my first post; I recently bought a 1998 Lowe Jon Boat with a 98 Merc (40 hp, 2 stroke, 3 cylinder, SN 74587X).

I'm in the process of discovery and getting the motor updated with all the essential services.

Wanting to do as much of the work for myself as possible; matching part numbers with my motor seems to be very challenging....I absolutley hate ordering the wrong parts.

Finding a supporting vendor is #2 on my list.

The motor runs pretty good, I have a maintenance book & fuel pump kit on order, but I cannot find the proper water impellar kit or spark plug wires. I heard the overheat alarm beep yesterday when I was picking up my duck decoys in a murky slough.... The plug wires look original.

Any info would be much appreciated.

Thanks,
Dom

 

[roscoe]

[h=1]Mercury-Mercruiser 47-8508910 IMPELLER[/h]
[h=1]Mercury-Mercruiser 84-821945A61 CABLE ASSEMBLY Hi Tension[/h] mercruiserparts . com/40-3-cyl--0g590000-thru-0g760299

 

[Spooney]

Thanks Roscoe...

So I have just finished catching up on most of the services on the motor..

Fuel Filters
Fuel Pump Kit
Spark Plugs & Wires
Thermostat Kit
Water Pump Kit
Grease fittings
Compression Test (all even at 100 psi)
Gear Oil

Upon testing at idle, the temp alarm was sounding off & water was gushing up through the shifting linkage hole.

After going back to the book, I realized that I failed to set the plastic water coupler onto the pump for the install. I had set the coupler onto the copper pipe.

Corrected my mistake and the motor runs perfectly!

Motor is in great shape!

 

[roscoe]

cool

happy boating