Rato R160, Service Manual

Page: 37 / 78

31
al fuel
supply
system.
Normal high
–tension
cord spark.
Spark
plug is in
poor
conditions
Too much carbon deposit
and dirt around electrodes.
Clear away.
Electrodes are burned badly
or insulators are damaged.
Replace spark plug.
Improper electrode gap. Adjust to proper value.
High-tension
cord with no
spark
Normal
spark
plug
High –tension cord is
damaged.
Replace
Ignition coil is damaged. Replace
Magneto loses magnetism. Replace
Abnormal gap between the
ignition coil and flywheel.
Adjust gap
TROUBLE CAUSE REMEDY
Abnormal
cylinder
compression
Normal
fuel
supply
system
Normal
ignition
system
Piston ring is worn too much
or even over its service limit
Replace
Piston ring is broken. Replace
Piston ring is sticking. Clear up carbon fouling.
Spark plug is not installed
tightly or is installed without a
gasket.
Air leakage between cylinder
block and cylinder head.
Tighten with a gasket in.
Check cylinder gasket, and the flatness of
the surface by which cylinder block
contacting with cylinder head
Tighten cylinder head cover bolts in
stipulated order to stipulated torque value.
Air leakage in the valves
Check valve clearance and tightness, repair
if necessary.
If engine still can’t start, take the engine to our authorized dealer to repair it.
l Spark plug testing
WARNING:
●
When testing the spark plug, never hold the high- tension cord of the spark plug with wet
hand.
●
Make sure there is no spilled fuel outside the engine and that the spark plug isn’t dipped with
fuel.
●
To prevent fire, keep sparks far away from the spark plug mounting hole.