Chapter Vi Vecicle Ordinary Trouble And Its Judgement; ( I )Starting Trouble/Difficulty - ATV 250 Service Manual

ChapterVI Vehicle Ordinary Trouble and
Trouble
Caution:
The following trouble, not including all
possible troubles, is a help for trouble guide
.Please refer to relevent contents for the
inspection, adjustment and
parts.

( I )Starting trouble/difficulty

1`Fuel system
( 1 )Fuel tank
.No oil
.Fuel filter is clogged
.Fuel filter net is clogged
.Breather tube is clogged
.Fuel is deteriorated or polluted
( 2 )Fuel cock
.Inlet tube is clogged
.Fuel cock is not be opened
( 3 )Carburetor
.Fuel is deteriorated or polluted
.Starting nozzle is clogged
.Air tube is clogged
.Float is distorted
.Needle valve is worn
.Improper valve sealing
.Improper installation of starting nozzle
.Starting nozzle is clogged
.Improper work of starting plug
( 4 )Air filter
.Core of air filter is clogged
2`Electric system
( 1 )Spark plug
.Improper spark plug clearance (standard
clearance is 0.6-0.7mm)
.Terminal is worn
-218-
Judgment
replacement of
or shortened
cient
.Spark plug is polluted
.wrong spark plug heat value
.Inefficient spark plug cap
( 2 )Ignition coil
.Primary coil/secondary coil is broken
.Inefficient high voltage wire
.Ignition coil is broken
( 3 )CDI magneto system
.CDI is failure
.Coil is failure
.Charging coil is failure
.Woodruff key is bad
( 4 )Switches and wires
.Main switch is bad
.The engine is off and switch is ineffi-
.Wires is broken or shortened
.Neutral switch is bad
.Starting switch is bad
.Rear brake switch is bad
( 5 )Starting motor
.Staring motor is bad
.Starting relay is bad
.Off power relay is bad
.Super clutch is bad
3`Cylinder
( 1 )Cylinder body and cylinder head
.Spark plug is loosen
.Cylinder head or cylinder body is loosen
.Cylinder head washer is damaged
.Cylinder body is worn or damaged