MerCruiser 350 Magnum MPI, Operation & Maintenance Manual

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CB310
Maintenance Chart
Only perform maintenance which applies to your particular power package.
SCHEDULED MAINTENANCE TO BE PERFORMED BY DEALER
Once a Year
TASK
Ignition System - check timing; adjust if needed
INTERVAL
Fuel Filter - replace.
Steering Head and Remote Control - Inspect and
lubricate.
Throttle Body - Inspect
Crankcase Oil and Oil Filter - change
Ignition System - clean and inspect condition.
Flame Arrestor and Crankcase Ventilation
Hose - clean and inspect.
Engine Alignment - check
Transmission Fluid - Change
Cooling system hoses and clamps - Inspect
for damage and deterioration. Check clamps
for tightness.
Electrical system - Check for loose
or damaged wiring.
Every 100 Hours of Operation or
Once Yearly, Whichever Occurs
First
After first 20 hours, then every 100
hours of operation thereafter
Saltwater use: Every 50 hours of operation or
60 days, Whichever Occurs First.
Freshwater use: Every 100 hours of operation
or 120 days, Whichever Occurs First.
At First 20 Hours of Operation
20 - Hour Checkup (NOTE 1)
Seawater Pickup Pump - Disassemble
and Inspect
Whenever Insufficient Seawater Flow is Sus-
pected. (If Operating Temperature Exceeds Nor-
mal Range)
Engine Exhaust System - Inspect externally for
damage, deterioration and restrictions. Check
clamps for tightness.
Shift and Throttle Cable and Linkage - Lubri-
cate and inspect for loose, damaged or miss-
ing parts.
NOTE 1 : For a list of 20-Hour Checkup maintenance items to be performed, see “IMPORTANT INFORMATION” section of this manual.
Replace Positive Crankcase Ventilation Valve
In-Line Fuel Filter (Mounted
on port side of Plenum)