Vento Triton R4, Service Maintenance Manual

Page: 15 / 146

VENTO MOTORCYCLES
Rev no.01/ page 15of 143
2-4 Periodic maintenance and adjustment procedures
SPARK PLUG
Neglecting the spark plug maintenance eventually leads to difficult
starting and poor performance. If the spark plug is used for a long time,
the electrode gradually burns away and carbon builds up along the inside
part. In accordance with the periodic table, the plug should be removed
for inspection, cleaning and to reset the gap.
Carbon deposits on the spark plug will prevent good sparking and
cause misfiring. Clean the carbon deposits
periodically.
CARBON DEPOSIT
Check to see the carbon deposit on the Spark Plug. If
the carbon is deposited, remove it with a spark plug
cleaner machine or carefully using a tool with a
pointed end.
Check to see the worn out or burnt condition of the
electrodes. If it is extremely worn or burnt, replace the
plug and also replace the plug if it has a broken insulator, damaged
thread etc.
Thickness gauge
Spark plug gap 0.6~0.7 mm (0.024-0.028 inch)
Check the spark plug for burnt condition. If abnormal replace the
Tighten the spark plug to the specified torque.
Spark plug
Tightening torque:15-18N.m
NOTE:
To check the spark plug, first make sure that the fuel used is
unleaded gasoline.
Confirm the Specification, thread size and reach while replacing
the spark plug.