Auto By-Starter - Sym HD 125 Service Manual

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4. FUEL SYSTEM

Auto By-Starter

Inspection
Turn off engine and waiting for over 10 minutes for
cooling.
Check resistance across the two terminals of the
auto by-starter.
Resistance value: Max. 10£ [ (Measured after
engine stopped for more than 10 minutes)
Replace the auto starter with a new one if
resistance value exceeds standard.
Remove carburetor, allow it to cool off for 30
minutes.
Connect a pressure tester from air pump.
Connect by-starter circuit.
Pump compressed air to the circuit.
Replace the auto by-starter if the circuit clogged.
Connect battery posts (12V) to starter's
connectors. After 5 minutes, test the by-starter
circuit with compressed air. If air flows through
the circuit, then, replace the starter.
Screw ×1
Removal
Auto by– starter
Remove fixing plate screw, and then remove the
plate and auto by-starter from carburetor.
Plate
Valve inspection
Check if auto by-starter and valve needle for
Screw ×1
damage or wear out.
Installation
Install auto by-starter to the bottom of carburetor
body.
Install fixing plate to the upper groove of auto
Needle
by-starter, and install its flat surface to carburetor.
Install screw and tighten it.
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