Yingang YG125-25, Руководство по обслуживанию

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YG125-25 Maintenance Manual Cylinder Head, Cylinder and Piston
Do not drop the piston pin retainer into the crankcase.
Disassembly and assembly of piston:
Disassemble and assemble piston according to the
following diagram.
While assembling, let the side with marker face the top of
piston; if the marker can not be clearly
identified, judge according to the shape of the piston ring
(as shown in the figure below). Stagger the piston ring
gap by more than 120º
While assembling the oil ring, mount the corrugated ring
first, then mount the lip rings at both sides, with the
corrugated ring joint staggering with both lip rings by
90
°
, and with the two lip rings staggering with each
other by 180
°
The piston pin retainer shall be replaced with new one
while assembling after disassembling, and stagger the
gap and the piston notch by more than 15
°
.
Notice:
Do not damage the piston pin and piston ring.
Do not reverse the mounting position of the first ring (ATG marker) and second ring (A marker).
No Procedure Quantity Remarks
Sequence of disassembling
Assembling is in the reverse order of
disassembling.
1
Crank rod assembly
1
With the side with
marker face the top of
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