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Mercury 40 Service Manual

Mercury 40
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CYLINDER BLOCK/CRANKCASE
Page 4B-34 90-828631R3 MARCH 1999
Crankcase Cover Installation
1. Clean off all oil from the contacting surfaces of the crankcase cover and cylinder block.
IMPORTANT: Make sure the contacting surface of the crankcase cover and cylinder
block are clean before applying gasket sealant.
2. Apply a smooth even coat of Loctite Master Gasket Sealant to the contacting surfaces
on the crankcase cover. Use a small (paint type) roller to spread out the sealant for a
smooth even coverage. Instructions in gasket sealant kit must be followed exactly.
NOTE: Do not apply gasket sealant to the main bearings or the bolt holes.
53821
b
a
a-Apply Loctite Master Gasket Sealant
b-Use a Roller to Apply a Smooth Even Coat
3. Apply oil to bolt threads. Tighten bolts in sequence and in two steps to the specified
torque.
53743
2
10
11
14
15
16
1718
19 20
1
2
34
5
6
7
8
9
12
13
a
b
1 2
34
5
6
7
8
9
10
11
12
13
14
15 16
17
18
19
20
a-Center Bolts (10)
b-Outer Bolts (10)
Crankcase Cover Bolt Torque
Center Bolts Qty. 10 (Larger Diameter M8)
1st: 11 lb-ft (15 Nm)
2nd: 22 lb-ft (30 Nm)
Outer Bolts Qty. 10 (Smaller Diameter M6)
1st: 53 lb-in. (6 Nm)
2nd: 106 lb-in. (12 Nm)

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Mercury 40 Specifications

General IconGeneral
BrandMercury
Model40
CategoryOutboard Motor
LanguageEnglish

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