KYMCO Downtown 350i Repair Manual page 332

6.Fuel System
Downtown 350i
When installation:
The throttle position sensor (TPS) and idle air bypass valve (ISC) have to be
reset when the throttle body MAP, TPS, ISC or ECU have been reinstalled. See
the TPS ISC Reset Procedure for more information.
Apply a light coat of fresh engine oil to a new fuel injector O-ring.
Fit the fuel injector pipe onto the top of the injector. The tab on the injector must
fit into the pipe.
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