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13. Crankshaft/ Piston
13.1 Disassembly/ Reassembly
进气门导管油封
机体
活塞
轴承
半圆键
传动齿轮
曲轴正时齿轮
连杆盖
进气门座
进气门
油封
气门弹簧
排气门
连杆螺栓
M5X0.8X25 8-10N.m
组装：
将活塞顶部的“ ”标记
朝向电机侧安装。
组装：
检查锥面有无缺损、
积碳是否过多后再进行
安装。
安装时进排气门不要
混淆。
锥面直径：
进气门：
22
排气门：
20
气门弹簧座
拆解：
将弹簧座稍稍
按下并朝旁孔
移位卸下。
曲轴
组装：
装安装时注意不要将油封
碰伤，一直推入直到轴承
接触到轴承座底部为止。
Valve spring seat
Disassembly: press down
the spring seat slightly and
disassemble it
Valve spring
Cylinder block
Oil seal of inlet valve
Piston
Installation: install the
piston with “ ▽ ” label
towards inlet valve
Timing gear
Semicircle
key
Bearing Oil seal
Connection rod bolt
M5X0.8X25
8-10M.m
Exhaust valve
Installation: check for damage
before installation. Don’t mix the
inlet valve and exhaust valve
Inlet valve: ￠22
Exhaust valve: ￠20
Inlet valve
Inlet valve
seat
Connection rod cover
Crankshaft:
Installation: pay attention
not to hurt the oil seal
during installation
Driving gear
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