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Mercury 40 FourStroke User Manual

Mercury 40 FourStroke
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CYLINDER BLOCK/CRANKCASE
Page 4B-24 90-857046R1 NOVEMBER 2001
4. Remove the connecting rod cap. Measure the compressed plastigauge to check the
connecting rod oil clearance. Replace bearings if oil clearance is not in specification.
53810
Connecting Rod Oil Clearance
0.0008 – 0.0020 in. (0.020 - 0.052 mm)
Thermostat
1. Measure the lift of the thermostat at the operating water temperature listed.
Water Temperature Valve Lift
118 - 123° F (48° - 51° C) Starts to Open
Above 145° F (63° C) Minimum 0.12 in. (3 mm)
Oil Pressure Switch
1. Check continuity of switch.
55845
Oil Switch Continuity Check
Below 2.9 psi (20.0 kPa) Continuity
Above 2.9 psi (20.0 kPa) No Continuity

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Mercury 40 FourStroke Specifications

General IconGeneral
BrandMercury
Model40 FourStroke
CategoryOutboard Motor
LanguageEnglish

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