Benelli TRK 502 Service Station Manual

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PISTON CHECK
The following procedure applies to both pistons.
Check:
• The sides of the piston (B) Fig. D.
If there are any vertical lines, replace the piston all together with
the relevant clips.
Measure:
• The diameter of the piston skirt (B) with a micrometer,
considering a distance from the bottom edge of around 10.5
mm Fig. E.
CLASS Piston skirt
A Ø69(-0.025/ -0.03)
B Ø69(-0.02/ -0.025)
If outside specifi cations, replace the cylinder and the relevant
clips all together.
IMPORTANT NOTICE
The piston is marked by a letter stating its class. The
cylinder-piston coupling must be made between the same
classes.
D
E
B
PISTONS
COPY - Moto GB - Grant Martland - grantmartland@motogb.co.uk

Benelli TRK 502 Specifications

General

Displacement	500 cc
Transmission	6-speed
Fuel Tank Capacity	20 liters
Seat Height	800 mm
Wet Weight	235 kg
Bore x Stroke	69 mm x 66.8 mm
Compression Ratio	11.5:1
Clutch	Wet multi-plate
Frame	Steel trellis
Wheelbase	1505 mm
Ground Clearance	190 mm
Max Power	47.6 hp (35 kW) @ 8500 rpm
Max Torque	46 Nm @ 6000 rpm
Front Suspension	50 mm upside-down fork
Front Brake	Double floating discs, 320mm, 4-piston calipers
Rear Brake	Single 260 mm disc
Fuel System	Electronic Fuel Injection (EFI)
ABS	Dual-channel ABS
Front Tire	120/70 R17
Rear Tire	160/60 R17
Engine Type	Liquid-cooled, four-stroke, parallel twin cylinder, DOHC, 4 valves per cylinder