Universal M4-30 spare parts kit

[ChangsinLattitudes]

Anyone familiar with the M4-30 spare parts kit?

Just got one sent to me. New C-30 owner.
Wondering which of the inuded spare parts should be changed out before the boating season begins and which parts are there just in case.

If you are not familiar with that kit, what parts of your engine do you change out every year?
Belt, fuel filter, oil filter, impeller, etc?
My boat maintenance knowledge is a bit lacking at the moment.

Thanks!

 

[Coriolisbc]

Changes,
If the boat is new to you, change them all, Impeller, fuel filter, Oil filter and belt
Be sure to do the air bleed after changing the fuel filter.
I change Impeller every two years after that, belt same, oil and fuel filters are annually.