Sym Joyride 125 Service Manual page 141

7. Cylinder Head / Valve
Install carburetor insulator onto carburetor and
tighten clamp strip bolt. Install the vacuum
hose of carburetor insulator.
Remove the intake valve adjustment hole cap
Start engine, and make sure that lubricant flows
to cylinder head.
Turn off engine after confirmed, and install the
intake valve adjustment hole cap.
Install seat cushion and body center cover.
Caution
If lubricant does not flow to cylinder
head, engine components will be worn
out seriously. Thus, it must be
confirmed.
When checking lubricant flowing
condition, run the engine in idle speed.
Do not accelerate engine speed.
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Vacuum
hose
Clamp strip