7.4 MPI
Never had one of these.Any common,replaceable on the water bits.
What spares would you carry on board?Sensors etc.

I got pretty much everything that dresses the block. Shorter list of what I don't have then what I have !

I have:

• serpentine belt
• raw water pump (complete)
• circulating water pump
• alternator
• power steering pump
• several feet of various wire gauges
• spare fluids for outdrive, trim tabs, engine
• spare bilge pump with quick-connect wires
• spare prop, hub, fasteners

Thanks for the replies.
Any known common sensor issues

Not really pretty solid piece if maintained properly...........you might carry a cap, rotor, ignition module, plugs and a set of wires

Okay will add those.
Not real keen on single engine offshore boating.
Guess lots of people do it though.

I've burned through a few idler pulleys on mpi's...

if you're running in salt air salt water cap corrosion might be an issue, and serp or V belts as mentioned above

In red for just an inland lake?
I applaud you.

A Rinda TechMate is needed to properly diagnose issues with these things. Without and you’re shooting in the dark. I’d want to have one of these and spare raw water pump parts on-board if it were mine.