ENGINE
3.9
ENGINE FASTENER TORQUE PATTERNS
Tighten cylinder head/cylinder base, and crankcase fasteners in the following sequence outlined below.
Cylinder Head
Crankcase
4
7
3
2
1
5
6
8
9
10
11
12
13
14
15
1
2
4
5
6
3
PISTON IDENTIFICATION
Four stroke engine rings have a rectangular profile. See text on Page 3.27 for ring installation. Use the information
below to identify pistons and rings.
NOTE: The pistons have no directional identification marks. New pistons are non--directional.
Engine Model No. Piston Length Standard Piston Identification
EH680ALE 80 mm None
EH590ALE 76.50 mm None
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