Clutch Slides; Overheating Of Engine; Excessive Engine Cooling - Yamaha SZR 660 Service Manual

CLUTCH
SLIDES
OR
FAILS
TO RELEASE
OVERHEATING OF
ENGINE/
EXCESSIVE ENGINE COOLING
CLUTCH
SLIDES
OR
FAILS
TO RELEASE
CLUTCH SLIDES
J
—
Clutch
Engine
oil
CLUTCH
FAILS
TO RELEASE
See
"GEAR
CHANGE
IMPOSSIBLE*
Clutch
Engine
oil
OVERHEATING OF ENGINE
—
Ignition
system
PROBABLE CAUSES
•
Clutch cable
wrongly
set
•
Clutch springs loose
•
Clutch
spring yielded
•
Friction pfates
worn
•
Clutch
plates
worn
• Clutch improperly
assembled
*
Oil
level
below
minimum
*
incorrect
gradation {low viscosity)
* Degradation
PROBABLE CAUSES
• Pressure
plate
deformed
• Ciutch spring not
prefoaded uniformly
• Reference marks
not.
aligned
• Clutch gear assy nut loose
•
Primary driven
gear
bearing defective
•
Drive plates
deformed
•
Driven plates
deformed
• Push
rod
broken
Fuel feed system
Engine compression
Engine
oil
Brake
Cooling system
•
Oil
level over
maximum
Excessive viscosity of
engine
oil
* Degradation
TRBL
SHTG
PROBABLE CAUSES
• Incorrect
electrode
gap
of spark plug
•
Spa*
piug thermal gradation
wrong
•
Ignition unit defective
•
incorrect carburetor main
jet
(incorrect setting)
•
Incorrect fue! level
•
Air
filter
element obstructed
• Excess
of
carbon deposits
•
Incorrect oiflevel
•
Incorrect
oil
viscosity
•
Incorrect
oil
gradation
• Pads
fail to
return freely
(remains blocked)
Engine
coolant
temperature
gauge defective
Thermo
unit
defective
Engine coolant
low teve!
Thermostat
defective
Thermo
switch defective
Dirty or
damaged
radiator
Fan motor
shaft seized
Fan motor
damaged
Fan motor
fuse
broken
EXCESSfVE ENGINE COOLING
THE ENGINE
FAILS
TO REACH
STANDARD OPERATING TEMPERATURE
Cooling system
PROBABLE CAUSES
Engine coolant temperature
gauge
defective
Thermo
unit
defective
Thermostat defective
Thermo
switch defective
Fan
motor
fails to
stop
9-5
9-6