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.
2. Remove the screws and nuts securing the oil pan to the block.
3. Remove the oil pan.
4. Remove and discard the oil pan gasket.
Front Engine Cover
Removal
1. Drain the seawater and closed cooling systems.
2. Remove the serpentine belt.
3. Remove the serpentine belt tensioner and bracket.
4. Remove the idler pulley with bracket.
5. Remove the crankshaft pulley.
a - Water circulating pump bolts
b - Crankshaft harmonic damper
6. Remove the hoses from the water circulating pump.
NOTE: Do not use a universal claw type puller to remove the crankshaft harmonic damper. The outside ring of the
harmonic damper is bonded to the hub with rubber. Use of a claw type puller may damage the harmonic damper.
7. Remove the crankshaft harmonic damper with a crankshaft harmonic damper remover and installer tool.
Description
Part Number
Kent‑Moore crankshaft harmonic damper remover and installer J23523‑F
a - Crankshaft harmonic damper puller
b - Crankshaft harmonic damper
8. Remove the water circulating pump.
Engine Disassembly
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 3A-29
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