General Information - Mercury 225 EFI Service Manual

3.0 litre work, electronic fuel injection

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General Information

Powerhead "Disassembly" and "Reassembly" instructions are printed in a sequence that

should be followed to assure best results when removing or replacing powerhead compo-

nents. If complete disassembly is not necessary, start reassembly at point disassembly was

stopped. (Refer to "Table of Contents," preceding.) Usually, complete disassembly of pow-

erhead will be required.

If major powerhead repairs are to be performed, remove powerhead from drive shaft hous-

ing. Removal of powerhead is not required for 1) inspection of cylinder walls and pistons

(refer to "Powerhead Removal and Disassembly," following, and remove cylinder heads and

exhaust cover), 2) minor repairs on components, such as ignition system, carburetors, reed

blocks and cylinder heads and checking operation of thermostats.

90-884294 OCTOBER 2001

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