PIAGGIO X9 Evolution 500 Repair Manual

- Remove the piston sealing rings and the oil scra-
per.
CAUTION
NOTE THE ASSEMBLY POSITIONS OF THE LININGS TO
PREVENT INVERTING THE POSITION IN CASE OF REUSE.
N.B.
BE CAREFUL NOT TO DAMAGE THE SEALING RINGS
DURING REMOVAL.
Inspecting the small end
- Using a bore gauge, measure the connecting rod
small end diameter.
N.B.
IF THE CONNECTING ROD SMALL END DIAMETER EX-
CEEDS THE STANDARD DIAMETER, EXHIBITS WEAR OR
OVERHEATING, PROCEED TO REPLACE THE CRANK-
SHAFT AS DESCRIBED IN THE CRANKCASE AND
CRANKSHAFT CHAPTER.
Characteristic
Standard diameter:
22 + 0.025 +0.015 mm
Inspecting the wrist pin
- Check the pin outside diameter using a micrometer.
Characteristic
Standard diameter:
22 0 -0.004 mm
- Calculate the coupling clearance between pin
and connecting rod end.
Characteristic
Standard clearance:
0.015 ÷ 0.029 mm
- Measure the diameter of the bearings on the piston.
Characteristic
Standard diameter:
22 + 0.006 + 0.001 mm
Engine X9 Evolution 500
ENG - 146

PIAGGIO X9 Evolution 500 Specifications

General

Engine Type	Single-cylinder, 4-stroke
Displacement	460 cc
Torque	42 Nm @ 5, 500 rpm
Fuel System	Electronic Fuel Injection
Transmission	Automatic CVT
Front Suspension	Telescopic fork
Rear Suspension	Dual shock absorbers
Front Tire	120/70-14
Rear Tire	150/70-14
Seat Height	790 mm
Height	1, 440 mm
Max Power	29.4 kW (40 hp) at 7, 250 rpm
Cooling System	Liquid-cooled
Front Brake	Dual 240 mm discs
Rear Brake	Single 240 mm disc