MerCruiser 305 CID (5.0L) Service Manual page 32

MAINTENANCE
Gas Sterndrive(Continued)
Scheduled Maintenance *
Touch-up paint power package and spray with corrosion
guard.
Change crankcase oil and filter.
Change drive unit oil and retorque connection of gimbal
ring to steering shaft.
Replace fuel filter(s).
Check steering system and remote control for loose,
missing or damaged parts. Lubricate cables and link-
ages.
Inspect U-joints, splines and bellows. Check clamps.
Check engine alignment. Lubricate U-joints splines.
Lubricate gimbal bearing and engine coupler.
Check continuity circuit for loose or damaged connec-
tions. Test MerCathodeR unit output on Bravo Models.
Retorque engine mounts.
Check spark plugs, wires, distributor cap and ignition
timing. Check and adjust idle speed.
Clean flame arrestor and crankcase ventilation hoses.
Replace PCV valve.
Check electrical system for loose, damaged or corroded
fasteners.
Inspect condition and tension of belts.
Check cooling system and exhaust system hose clamps
for tightness. Inspect both systems for damage or leaks.
Disassemble and inspect seawater pump and replace
worn components.
Clean seawater section of closed cooling system.
Clean, inspect and test pressure cap.
Replace coolant.
* Only perform maintenance which applies to your particular power package
D Standard Models
L Horizon Models
z Whichever Occurs First
x Interval will be reduced if not using extended life coolant.
* Lubricate engine coupler every 50 hour if operated at idle for prolonged periods of time.
Index
Page 1B-4
Every
Every
200
100
Annu-
hours
ally hours or
or 3
Annually
years
DL
DL
DL
DL
DL
D L
D* L
D L
D
D
D
D
D
D
D
D
90-861327--1 OCTOBER 1999
SERVICE MANUAL NUMBER 24
Every
300 Every Every
hours
2 5
or 3
years years
years
L
L
L
L
L
L
L
L
x
DL