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notch " d " of oil ring backing is at "
△
" on the left side of ex , perpendicular to the line connecting " c " and
" e ". (as shown in
the picture below)
Install the cylinder and piston
1. Place two hollow positioning pins and install a new cylinder block gasket (as shown in the figure, before installing the new
cylinder block gasket, ensure that the assembly plane of the cylinder block is smooth and flat and at the assembly plane of the
cylinder body apply flat surface
sealant)
.
2. Install the cylinder block, press the piston ring by hand to fit it into the cylinder block; the openings of the piston ring are
staggered for assembly (the
arrow on the top of the piston points to the exhaust side as shown in the figure
)
.
Remarks: ① before installing the cylinder block, apply an appropriate amount of engine oil evenly on the inner wall of the
cylinder block.
②apply proper amount of engine oil to the piston skirt and piston ring.
③do not drop
the timing chain into the crankcase.
3. Put the piston pin into the piston and install it on the connecting rod, install the piston pin retaining ring into the ring groove
with needle-nose pliers (one piston pin retaining ring at each end of the piston pin
), and then gently push the cylinder to the
assembly position.
Remarks: ① apply an appropriate amount of engine oil to the piston pin hole and the small end hole of the connecting rod.
