New to me, 2000 Optimax 225 - Maintenance Suggestions

[Green Flash]

Hello everyone,

This is my very first post here and I am sorry to say I have questions...

First, I have (new to me) twin 2000 Optimax 225's with 680 hours. The power heads were replaced 1 year ago with 5 hours on each since the new power heads. The fuel rails have also been replaced, but beyond that, I am unsure of everything else. I had an engine survey done...The DDT showed no faults and compression test was satisfactory.

I want to be sure that all maintenance is up to snuff before taking my family out for the first time. I am a do it yourselfer but I have not owned Merc's before.

What maintenance should I be performing besides thermostats, water pump kit, plugs, fuel filters, etc. Should I perform any maintenance on the air compressor, fuel pumps, etc.

Potential challenges.

Starboard engine (model 1225D83WD) - Have to give throttle to start when cold. Once throttle applied and taken back to idle, she stays running and runs smooth.

Port engine (Model 1225D84WD) - Fires right up, but after a few minutes there is a slight increse and decrease in rpm. Not enough to notice on the gauge, but it can be heard when only this engine is running.

Thanks in advance for your help!

[boats.net]

The owners manual has the maintenance chart if you have the manual,

EVERY 100 HOURS OF USE OR ONCE YEARLY, WHICHEVER
OCCURS FIRST

1. Lubricate all lubrication points. Lubricate more frequently when
used in salt water. (page 96, 97)
2. Inspect and clean spark plugs. (page 94)
3. Replace Water separating fuel filter (Page 87, 88)
4. Replace compressor air intake filter. (Page 95)
5. Check corrosion control anodes. Check more frequently when
used in salt water. (page 91)
(continued on next page)

84

MAINTENANCE

Inspection And Maintenance Schedule
(Continued)

EVERY 100 HOURS OF USE OR ONCE YEARLY, WHICHEVER
OCCURS FIRST

6. Drain and replace gear case lubricant. (page 98)
7. Check power trim fluid. (page 97)
8. Inspect battery. (page 94)
9. Check control cable adjustments.

*

10. Lubricate splines on the drive shaft.

*

11. Check tightness of bolts, nuts, and other fasteners.

EVERY 300 HOURS OF USE OR THREE YEARS

1. Replace water pump impeller (more often if overheating occurs
or reduced water pressure is noted).

*

BEFORE PERIODS OF STORAGE

1. Refer to Storage procedure. (page 100)

*These items should be serviced by an authorized dealer.

[Green Flash]

Thank you.