,
6-3-10
CYLINDER
1) Remove cylinder from crankcase by removing nut and spring washer.
NOTE: For
Model
EC05:2,07-2 Remove spark plug prior
to
removing cylinder.
2)
Remove cylinder gasket.
3)
For Model EClOV remove intake pipe from cylinder.
In reassembly:
1) Clean carbon deposit from cylinder head and combustion chamber.
CAUTION: WITHOUT CLEANING THE CARBON DEPOSIT, IT MAY DAMAGE THE PISTON AND INNER
SURFACE
OF CYLINDER WHEN REASSEMBLY.
Replace cylinder gasket
to
new one.
Intake
of
cylinder should be positioned
to
the left against view from blower side, Apply
oil
to
piston ring and cylinder
walls, then after assembled the cylinder securely, make sure
if
the crankshaft rotate smoothly.
Fastening torque
of
cylinder
is
as
shown below: Fastening torque
of
spark plug for EC05-2,
07-2:
EC05-2 90-100 kg-cm
(6.59
ft-lbs) E05-2 250-300 kg-cm (18-22 ft-lbs)
EC07-2 90-100 kg-cm
(6.5-7
ft-lbs) E07-2 250-300 kg-cm (18-22 ft-lbs)
EClO
90-100 kgcm
(6.5-7
ft-lbs)
EC17 180-220 kg-cm (13-1
6
ft-lbs)
EC25-2
340-400
kgcm (25-29 ft-lbs)
CAUTIONS:
r)
WHEN
FASTENING
CYLINDER,
TIGHTEN
FOUR
NUTS
UNIFORMLY.
2)
BEFORE REASSEMBLE CYLINDER, APPLY OIL ON NEEDLE BEARING LOCATED TO END OF
CONNECTING
ROD.
6-3-1
1
PISTON
1) Remove both side piston pin clips
2) Pull out piston pin and disconnect the needle bearing from small end
of
connecting rod.
CAUTION: IN ORDER NOT TO DAMAGE PISTON, PULL OUT PISTON PIN BY FIRMLY HOLD PISTON. ALSO
TAKE A SPECIAL CAUTION WHEN DISASSEMBLE NEEDLE BEARING.
3)
Remove piston rings from piston by expanding the open ends
of
rings.
In'reassembly
:
PISTON RINGS
(Fig.
6-3-2, 6-3-3)
If
an expanding tool is not available, install rings by placing the open end
of
the ring
on
first land of piston, spread ring only
far enough
to
slip over the piston and carry it into correct groove,
CAUTIONS:
1)
BE EXTREMELY CAREFUL NOT
TO
DISTORT AND BRAKE THE RING.
2)
STRIKE THE KNOCK PIN TO THE GROOVE LOCATED ON OPEN END OF RINGS (THIS
IS
TO
PREVENT FROM THE ROTATION OF RINGS WHILE OPERATING THE ENGINE.)
31
ASSEMBLE RINGS IN THE ORDER OF 2ND RING AND IST RING.
(Fig.
6-3-3)
1ST RING
-
CHROMIUM PLATED SURFACE
2ND RING- PERKARIZED SURFACE (2ND RING FOR MODEL EC25-2
IS
CHROMIUM PLATED
SUR-
FACE.)
(RING FOR MODELS EC05-2,07-2
IS
NOT CHROMIUM PLATED.)
-
26
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