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MerCruiser 350 MAG MPI Owner's Manual

MerCruiser 350 MAG MPI
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Section 5 - Maintenance
90-864197070 JUNE 2007 Page 59
Check the cooling system and the exhaust system hose clamps for tightness. Inspect
both systems for damage or leaks.
Disassemble and inspect the seawater pump and replace worn components.
Clean the seawater section of the closed cooling system. Clean, inspect, and test the
pressure cap.
Inspect the exhaust system components and verify that the flapper valves are not
missing or worn, if equipped.
Maintenance Log
Record all maintenance performed on your power package here. Be sure to save all work
orders and receipts.
Date Maintenance Performed Engine Hours
Engine Oil
NOTICE
Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by
law. Use caution not to spill oil, coolant, or other fluids into the environment when using
or servicing your boat. Be aware of the local restrictions governing the disposal or
recycling of waste, and contain and dispose of fluids as required.
Checking
1. Stop the engine. Allow approximately 5 minutes for the oil to drain into the oil pan. The
boat must be at rest in the water.
2. Remove the dipstick. Wipe clean and reinstall fully into the dipstick tube. Wait 60
seconds to allow trapped air to vent.

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MerCruiser 350 MAG MPI Specifications

General IconGeneral
Engine TypeV8
Horsepower300 HP
Ignition SystemElectronic ignition
Alternator65 amp
Compression Ratio9.4:1
Displacement5.7L (350 cu in)
Fuel SystemMulti-Point Injection (MPI)
Bore x Stroke4.00" x 3.48" (101.6mm x 88.39mm)

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