APRILIA Pegaso 650 Manual De Taller página 290

REPAIRS
DEFECT
Engine too noisy.
The clutch slips.
Clutch disengages
badly.
Clutch jerks on
engaging.
Engaging gears difficult
or impossible.
The gears do not remain
engaged.
8 - 18
SYMPTOM AND POSSIBLE CAUSE
Noise seem to come from engine shaft or from counter-
shaft.
1) Engine shaft or countershaft bearings worn.
2) Bearing of big end of connecting rod worn.
3) Excessive endl play of engine shaft or countershaft.
4) Countershaft gear unit defective.
Noise seems to come from clutch.
1) Tooth flanks of primary transmission worn.
2) Clutch case, clutch disc hub and disc spring carrier worn.
3) Clutch discs (lined or smooth) worn or defective.
4) Clutch case bearings worn.
Noise seems to come from primary transmission or from
gearshift.
1) Tooth flanks of gearshift gears worn.
2) Gear shaft bearings worn.
3) Speed gear roller cages worn.
1) Clutch control badly adjusted.
2) Insufficient clutch play.
3) Clutch springs weakened.
4) Lined clutch discs worn out.
1) Unsuitable type of oil.
1) Clutch control badly adjusted.
2) Clutch discs (smooth or lined) deformed or worn out.
3) Guide grooves for lined discs in clutch case worn.
4) Guide grooves for smooth discs in clutch disc hub worn.
1) Clutches or slits of speed gears worn.
2) Ratchet gear of gear selector deformed.
3) Ratchet gear spring broken or worn.
4) Index lever spring broken or worn.
5) Return spring of selector lever broken or worn.
1) Clutches or slits of speed gears worn.
2) Gearshift forks deformed or worn.
3) Fork rods deformed.
4) Index lever spring broken or worn.
REMEDY
Change bearings.
Change connecting rod kit
or complete engine shaft.
Restore clearance using
special washer or shim
washers.
Change the springs of split
gears.
Change complete primary
transmission.
Change the worn compo-
nent.
Change.
Change the bearings or
the complete transmis-
sion.
Change the gears.
Change the bearings.
Change.
Adjust,
Adjust clutch play.
Change the springs.
Change the lined discs.
Use prescribed oil.
Adjust.
Change discs.
Change primary transmis-
sion.
Change disc hub.
Change the gears.
Change complete gear se-
lector shaft.
Change.
Change.
Change.
Change the gears.
Change the forks.
Change.
Change.