HYOSUNG AQUILA 250 FI, Service Manual, Page: 56 / 90

55
FUEL SYSTEM AND THROTTLE BODY 4-2-10
●
Clean all passageways with a spray-type throttle
body cleaner and blow dry with compressed air.
CLEANING
WARNING
Some throttle body cleaning chemicals,
especially dip-type soaking solutions, are very
corrosive and must be handled carefully. Always
follow the chemical manufacturer’s instructions
on proper use, handling and storage.
CAUTION
Do not use wire to clean passageways. Wire can
damage passageways. If the components cannot
be cleaned with a spray cleaner it may be
necessary to use a dip-type cleaning solution and
allow them to soak. Always follow the chemical
manufacturer’s instructions for proper use and
cleaning of the throttle body components. Do not
apply throttle body cleaning chemicals to the
rubber and plastic materials.
CAUTION
Never operate the idle screws
①①
(NO.1) and
②②
(NO.2) to avoid variations of the carburetion
setting.
INSPECTION
●
Check following items for any damage or clogging.
* O-ring * Secondary throttle valve
* Throttle shaft bushing and seal
* Injector cushion seal
* Throttle valve
* Vacuum hose
Check fuel injector filter for evidence of dirt and
contamination. If present, clean and check for
presence of dirt in the fuel lines and fuel tank.
①
②