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-19-
•
Cylinder
12. Disassembly and reassembly of the cylinder
[Tools required]
• Hex. bar wrench (5 mm)
• Socket wrenches (13 mm and 19 mm)
(1) Disassembly
•
Remove Spark Plug Ass'y BPMR7A
[142]
by using a socket wrench (19 mm).
• Remove the four Bolts M6 x 25
[168]
using a hex. bar wrench (5 mm), and then remove the Cylinder
[146]
.
•
Remove the Decomp.
[144]
and Decomp Cap
[143]
by using a socket wrench (13 mm).
(2) Reassembly
Reassembly can be conducted by reversing the disassembly procedure. However, special attention
should be given to the following items.
• Completely wipe off all liquid packing (ThreeBond 1207C) from the matching surfaces of the Cylinder
[146]
, Crank Case (A)
[6]
, and Crank Case (B)
[44]
, and from the surface of Cylinder Packing (C)
[169]
. Be careful not to damage the matching surfaces.
• Never reuse the Bolts M6 x 25
[168]
. Replace the bolts with new ones.
• Degrease the threaded holes of Crank Case (A)
[6]
and Crank Case (B)
[44]
before reassembling the
Cylinder
[146]
.
• Do not reverse the orientation of Cylinder Packing (C)
[169]
. (Mount it according to the shape of the
exhaust port.)
• Be careful not to damage the cylindrical surface of the Cylinder
[146]
when disassembled. Remove
carbon dust from the exhaust port and combustion chamber, and then clean both parts with gasoline.
• Be careful not to let any dust enter the Cylinder
[146]
from its ports when reassembling the Cylinder
[146]
.
• Apply a thin coating of two-cycle oil to the cylindrical surface of the Cylinder
[146]
and the peripheral
surface of Piston (51.5)
[172]
when reassembling the Cylinder
[146]
.
• Apply liquid packing (ThreeBond 1207C) to the entire faces on both sides of Cylinder Packing (C)
[169]
. Fully degrease the mating faces before applying the grease.
[169]
[6]
[149]
[147]
[148]
[168]
[169]
[44]
[144]
[146]
[142]
[172]
[143]
Apply liquid packing
(ThreeBond 1207C) to the
entire faces (both sides).