Sym GTS 250, Service Manual

Page: 54 / 217

4. Fuel System
4-7
Automatic by-starter
Inspection
Turn off engine and waiting for over 10 minutes for
cooling.
Check resistance across the two terminals of the
automatic by-starter.
Resistance value: Max. 10
Ω
(Measured after
engine stopped for more than 10 minutes)
Replace the automatic by-starter with a new one if
resistance value exceeds standard.
Remove the carburetor, allow it to cool off for 30
minutes.
Connect a pressure tester form air pump.
Connect fuel rich circuit.
Pump compressed air to the circuit.
Replace the automatic by-starter if the circuit
clogged.
Connect battery posts (12V) to starter’s
connectors. After 5 minutes, test the rich circuit
with compressed air.
If air flow through the circuit, then replace the
by-starter.
Removal
Remove fixing plate screw, and then remove the
plate and automatic by-starter from carburetor.
Valve inspection
Check if automatic by-starter and valve needle for
damage or wear out.
Installation
Install automatic by-starter to the carburetor body.
Install fixing plate to the upper groove of automatic
by-starter, and install its flat surface to carburetor.
Install screw and tighten it.
Caution
z
Align the round point of the starter with the
screw hole of air intake side.
1 screw
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