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Mercury 40 FourStroke User Manual

Mercury 40 FourStroke
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CYLINDER BLOCK/CRANKCASE
Page 4B-2390-857046R1 NOVEMBER 2001
Checking Connecting Rod Bearing Clearance
IMPORTANT: Do not interchange used connecting rod bearings. Reinstall bearings
in their original position.
1. Clean all the oil from the connecting rod bearing surfaces and connecting rod journals
on the crankshaft.
NOTE: Refer to instructions in Cylinder Block Reassembly for selecting and installing con-
necting rod bearings.
2. Place a piece of plastigauge on the connecting rod journals.
53751
a
a-Plastigauge
IMPORTANT: Do not rotate connecting rod when checking clearance.
3. Install the connecting rod to the respective journal. Tighten connecting rod bolts in se-
quence and in two steps to the specified torque.
a
b
c
c
d
a-Connecting Rod Cap
b-Crankpin
c-Scribe Marks on Cap and Rod
d-Connecting Rod Bolts
Connecting Rod Bolt Torque
1st Torque: 53 lb-in. (6 Nm)
2nd Torque: 150 lb-in. (17 Nm)

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Mercury 40 FourStroke Specifications

General IconGeneral
BrandMercury
Model40 FourStroke
CategoryOutboard Motor
LanguageEnglish

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