EH12, EH17, EH25 - Small Engine Discount

(2) Install the piston and connecting rod assembly
into the cylinder.
Use a piston ring compressor to hold the piston
rings.
Place ‘‘4 ” mark of the piston crown on the
magneto side of the crankcase.(See Fig. 5-31.)
PISTON RING COMPRESSOR
CONNECTING ROD
-[NOTES] 1
(1) Applyenough oil to piston rings, connecting
rod bearings and cylinder bore before
assembly.
(2) Set gaps of the piston rings 90 degrees apart
from each other before assembly.
(See Fig. 5-32.)
CRANK CASE (FLYWHEEL SIDE)
Fig. 5-31
-SECOND
RING
\
Fig. 5-32
5-4-4 CONNECTING ROD
(1) Turn crankshaft to bottom dead center, lightly
tap top of the piston until large end of the rod
meet crankpin.
(2) Install the connecting rod cap to the connecting
rod matching alignment marks. (See Fig. 5-33.)
Torque connecting rod bolts to specification.
M8 X 46 mm connecting rod bo1 t .... 2pcs.
CONNECTING ROD BOLT TIGHTENING TORQUE
I EH12 I EH17 I EH25 I
90-1 15 kg*cm
9-11 N-m
170-200 kg-cm
17-19.5 Nom
225-275 kgocrn
22-27 Nom
6.5-8.3 ft*lb 12.3-14.5 ftdb 16.3-19.9 ft4b
ALIGNMENT MARK
h
Fig. 5-33
B
(3) Check for free movement of connecting rod
by turning crankshaft slowly.
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