GPX 250r TSE, Maintenance Manual

Page: 94 / 104

GPX MOTO
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of the fine adjustment
screw of the
carburettor plunger
Correct
/
Check whether the
carburettor gasket
is leaking
Air leak
Deterioration of
Carburettor seal ring
Airtight
Loose carburettor
Damaged carburettor
gasket
Remove the spark
plug and perform a
spark test
Weak sparks or
intermittent sparks
The spark plug is
faulty or carbon
deposits
The electronic igniter
is malfunctioning
The magneto is faulty
Good spark plug
The spark plug cap is
faulty
The power circuit is
faulty
The engine performs
poorly at high speeds
Check the ignition
timing and valve
clearance
Incorrect
The ignition controller
is faulty
Improper valve
clearance adjustment
The magneto is faulty
Valve clearance and
ignition timing are
correct
/
Disassemble the
connection of the fuel
pipe of the
carburettor and check
if the fuel
pipe is blocked
Insufficient fuel flow
The fuel tank has run
out
Blocked fuel pipe
The fuel pipe has
sufficient flow
Blocked fuel tank cap
vent
Check if the filter and
carburettor nozzle are
blocked
Blockage
Blocked carburettor
measuring hole
Unblocked
Float stuck
Filter blocked
Check gas timing
Incorrect
Adjust gas timing
Correct
/
Check valve spring
pressure
Insufficient Pressure
Worn or broken valve
spring