KYMCO AHG5, Service Manual

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13. Fi DIAGNOSTIC TOOL
DT X360
9
4. ENGINE COMPONENTS
4.1. Flywheel with Encoder
Teeth
There are 22 teeth and 2 missing teeth.
There are 15 degrees between each tooth
include the missing tooth, therefore, each
tooth is just right on the 24 equal line.
When the flywheel is rotating, the magnetic
field around the windings is cut by the teeth,
which causes the CPS to send the inductive
voltage signal that the ECU uses to
determine and compute the engine speed
and crankshaft position at the time.
4.2. Fuel Pressure Regulator
This is a mechanical pressure regulator
valve in the fuel pump. The main function of
the fuel pressure regulator is that maintains
absolute pressure of fuel hose.
The fuel pressure regulator changes positive
pressure according to manifold pressure for
maintaining the fuel supply pressure in 3
kg/cm
2
.
The excessive fuel will flow back to the fuel
tank.
4.3. Exhaust Pipe A
The oxygen sensor on the exhaust pipe,
there should full circumference weld a nut.
Apply a layer of anti-seize lubricant to the
threads to prevent sintering at high
temperatures.
Warning: Avoid hitting the oxygen sensor or
pulling the wire of the oxygen sensor.
Torque: 2.7 kgf-m