ENGINE
3.2
ENGINE FASTENER TORQUE PATTERNS
T ighten cylinder head, cylinder base, and crankcase fasteners in 3 steps following the sequence outlined below .
6mm
1
23
4
6
5
Cylinder Head
Cylinder Base
Crankcase
1
2
3
4
9
7
6
8
5
10
11
PISTON IDENTIFICATION
Note the directional and identification marks when viewing the pistons from the top. The letter “F”, “ ! ”, “ "”or:
must always be toward the flywheel side of the engine. The other numbers are used for identification as to
diameter, length and design. Four stroke engine rings are rectangular profile. The numbers or letters on all rings
(except oil control rings) must be positioned upward. See text for oil control ring upper rail installation. Use the
information below to identify pistons and rings.
Engine Model No. Oversize Available*
(mm)
Piston Length Standard Piston
Identification
ES32PFE .25
.50
mm None
*
Pistons and rings marked 25 equal .25mm (.010I)oversized
Pistons and rings marked 50 equal .50mm (.020I)oversized
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