Generic Trigger SM 50ccm, Owner'S Manual

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11 Cylinder cover/air cylinder/piston
Preparation data ---------------11.1
Fault diagnosis ---------------11.2
Disassembly of air cylinder -------------11.3
Disassembly and installation of the piston -------11.4
Installation of air cylinder -------------11.5
Disassembly of cylinder cover -----------11.6
Installation of cylinder cover - ---------11.7
11.1 Preparation data
Matters needing attention in operation
·The operation of air cylinder/piston can be conducted on the frame.
·Blow it dry with compressed air after dismantling, before inspection and test or after cleaning.
·In order to ensure the encapsulation of cylinder cover and cylinder body
， the cylinder cover bears considerable
bolt retightening force. Retightening force value ： 50Nm.
All parts should be cleaned before inspection and test and should be blow dry with high pressure air.
Function of the cylinder ： the cylinder body provides space for the compression, burning and
expansion of air and plays a steering function to piston motion.
It also transmits part of the heat in the air cylinder to the surrounding cooling media.
Function of piston ：
1 ． Bearing the pressure caused by burning of combustible mixture gas and pass the pressure to the connecting
rod, driving the rotation of the crankshaft.
2
． Shaping a combustion chamber with the cylinder cover and others.
3 ． Acting as the sliding valve to lock and unlock the air channel, pressing the fresh air mixture in the crankcase
into the air cylinder and ejecting the exhaust gas out of the air cylinder after combustion.
Function of the cylinder cover
： the cylinder cover is designed to encapsulate the air cylinder,
constitute a combustion chamber with the piston and bear combustible gas with high pressure
and high temperature.
Preparation reference
Unit: mm