Sym HD 125/200 servicemanual - Scootergrisen
Sym HD 125/200 servicemanual - Scootergrisen
Sym HD 125/200 servicemanual - Scootergrisen
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Tighten 4 nuts and washers on the cylinder head<br />
upper side, and then tighten 2 cylinder head<br />
mounting bolts of cylinder head side cover.<br />
Torque value: 2.0~2.4kgf-m<br />
Install and tighten spark plug<br />
Torque value: 2.0~2.4kgf-m<br />
Caution<br />
This model is equipped with more precision<br />
4-valve mechanism so its tighten torque can not<br />
be exceeded standard value in order to avoid<br />
causing cylinder head deformation, engine noise<br />
and leaking so that motorcycle’s performance be<br />
effected.<br />
Install cam chain on to sprocket and align the<br />
timing mark on the sprocket with that of cylinder<br />
head.<br />
Align sprocket bolt hole with camshaft bolt hole.<br />
Tighten the sprocket mounting bolt.<br />
Caution<br />
Make sure timing marks are matched.<br />
Install a new O-ring onto thermostat and tighten its<br />
mounting bolts.<br />
Loosen sprocket chain tensioner and let it contact<br />
with chain plate tightly. Tighten the bolt cap of<br />
tensioner adjustment hole.<br />
Install Air Injection system (AI) pipe. (2 bolts)<br />
Install carburetor insulator onto carburetor and<br />
tighten clamp strip bolt. Install the vacuum hose<br />
of carburetor insulator.<br />
To this chapter contents<br />
6. CYLINDER HEAD/VALVE<br />
2 Insulator bolts<br />
Hole cap of adjustment bolt<br />
Vacuum tube<br />
AI. Pipe bolts<br />
4 Nuts<br />
Cylinder head mounting bolts<br />
Timing mark<br />
Thermostat bolt<br />
Clamp strip<br />
6-13