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ENGINE/SPARK PLUGS
SPARK PLUG CHECK
In general, the table contains the typical conditions of spark
plug with the various degeneration causes and corresponding
solutions.
SOILED
SPARK PLUG
OVERHEATED
SPARK PLUG
Cause
Solutions
Cause
Solutions
Over rich mix of air/fuel
-Wrong setting of the carburetion.
Electrical system fault
-Imperfect coil connection
Specifi c riding conditions
-Prolonged periods at “minimum”
-Long sections at low speed
Spark plug too cold
The fuel/carburettor system
needs to be fi ne tuned
Check the coil connections
and relevant impedance
Èvery so often, the bike
needs to be taken to speeds
of about 80 km/h
Use a warmer spark plug, as
per specifi cations
Ignition too advanced
Insuffi cient air/fuel mix
Insuffi cient coolant and/or
lubricant
Spark plug torque too low
The spark plug used is too
hot
Adjust advanced ignition
Adjust air/fuel ratio
Add coolant and/or lubricant
Tighten to the correct torque
Use cooler spark plugs as per
specifi cations
COPY - Moto GB - Grant Martland - [email protected]
Содержание TRK 502
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