XY Powersports XY500UTV, Service Manual

Page: 206 / 259

11. ELECTRIC SYSTEM
11-9
ELECTRONIC FUEL INJECTION SYSTEM
DIAGRAM
ELECTRONIC FUEL INJECTION SYSTEM
MAINTENANCE NOTICE
●
USE QUALITY COMPONENTS FOR SERVICE, OR ELSE IT
CANNOT GUARANTEE THE ELECTRONIC FUEL INJECTION
NORMAL OPERATION.
●
IN THE COURSE OF MAINTENANCE, NEVER TRY TO
BREAK DOWN THE ELECTRONIC PARTS.
●
IN THE COURSE OF MAINTENANCE, THE ELECTRONIC
COMPONENTS MUST BE HANDLED CAREFULLY.
●
WHEN CUT DOWN OR CONNECT UP PLUG
CONNECTOR,YOU MUST TURN OFF THE IGNITION SWITCH,
OR ELSE THE ELECTRONIC FUEL INJECTION COMPONENTS
WILL BE DAMAGED.
●
WHEN TAKE DOWN THE ELECTRIC FUEL PUMP, DONOT
ENERGIZE THE FUEL PUMP, IT CAN GENERATE SPARK AND
CAUSE FIRE.
●
FUEL PUMP NOT PERMITTED DO OPERATION TEST
UNDER DRY STATE OR IN WATER.OR ELSE WILL SHORTEN
IT’S LIFE. BESIDES,THE OIL FUEL PUMP TWO EXTREMES
CANNOT REVERSE CONNECTION.
●
ELECTRONIC FUEL INJECTION SYSTEM FUEL SUPPLY
PRESSURE IS HIGH(AROUND 300kPa),THE FUEL PIPE ALL
APPLY HIGH PRESSURE RESISTANCE PIPE,SO DO NOT
DISMANTLE THE PIPE WHEN THE FUEL SYSTEM NEEDED TO
BE REPAIRED,YOU HAVE TO DO FUEL PIPE PRESSURE
RELIEF BEFORE DISMANTLE THE OIL PIPE.PRESSURE
RELIEF METHOD IS AS FOLLOWING:
REMOVE FUEL PUMP RELAY,STARTING THE ENGINE AND
LET IT IDLE , UNTILL THE ENGINE DIES ITSELF.
FUEL PIPE’S DISMANTLE AND FUEL FILTER’S
REPLACEMENT SHOULD BE CARRY ON BY PROFESSIONAL
PERSON IN WELLVENTILATED PLACE.
●
WHEN INSPECTING THE IGNITION SYSTEM,ONLY IF
NECESSARY,DO SPARK TEST,AND SHOULD BE AS FAST
AS POSSIBLE, DONOT OPEN AIR SAMPER WHEN TESTING,
OR ELSE PLENTY OF UNBURNED FUEL WILL ENTER THE
VENT-PIPE AND DAMAGE THE TRIPLET CATALYST.
●
IDLE SPEED REGULATION COMPLETELY CARRY OUT BY
ELECTRONIC FUEL INJECTION SYSTEM,THROTTLE VALVE
GUN LIMIT SCREW ALREADY SETTED WHEN IT LEAVE THE
FACTORY,IT INITIAL POSITION CANNOT BE CHANGED
EASILY.
●
WHEN INSTALLING THE BATTERY, THE POSITIVE AND
THE GROUND CANNOT BE INSTALLED WRONG. THIS
SYSTEM APPLYS NEGATIVE GROUND.
●
WHEN ENGINE RUNNING,DON’T UNHOOK THE BATTERY
CABLE.
●
BEFORE CARRY OUT ELECTRONIC WELDING ON THE
VEHICLE,YOU ARE REQUIRED TO UNHOOK THE BATTERY
POSITIVE TERMINAL, NEGTIVE TERMINAL AND ECU.
●
DONOT USE METHOD IMPALE LEAD CUTICULAR TO TEST
COMPONENTS’S INPUT AND OUTPUT ELECTRICAL SIGNAL.
●
SET UP ENVIRONMENTAL PROTECTION
CONSCIOUSNESS. TREATING THE WASTE AFTER
MAINTENANCE.
11