Mercury 8.1 S Horizon

40
Gas Inboard (Continued)
Scheduled Maintenance *
Annu-
ally
Every
100
hours or
Annually
z
Every
200
hours
or 3
years
z
Every
300
hours
or 3
years
z
Every
2
years
Every
5
years
Every
500
hours
or 5
years
z
Every
1000
hours
or 5
years
z
Per
OEM
Touch-up paint power package
and spray with corrosion guard.
L
Change crankcase oil and filter. L
Change transmission fluid. L
Replace fuel filter(s). L
Check steering system and remote
control for loose, missing or
damaged parts. Lubricate cables
and linkages.
L
Retorque engine mounts. L
Check spark plugs, wires, distribu-
tor cap and ignition timing. Check
and adjust idle speed.
L
Clean flame arrestor. L
Check electrical system for loose,
damaged or corroded fasteners.
L
Inspect condition and tension of
belts.
L
Check cooling system and exhaust
system hose clamps for tightness.
Inspect both systems for damage
or leaks.
L
Disassemble and inspect seawater
pump and replace worn
components.
L
Clean seawater section of closed
cooling system. Clean, inspect and
test pressure cap.
L
Replace coolant. L
Check engine-to-propeller shaft
alignment.
L
* Only perform maintenance which applies to your particular power package
z Whichever Occurs First