Benelli TRK 502 Service Station Manual

5 - 30
VALVE AND VALVE SPRING INSTALLATION
*
B
C
D
1
2
HEAD DISTRIBUTION
Install the head:
NOTE:________________________________
Lubricate the valve stem and oil seal.
E
Engine oil
• Valve bottom spring plate (4),
• valve oil seal (3) Fig. A1 see section entitled “Valve oil seal
installation/removal”.
• valve (5)
• valve spring (2)
• Valve top spring plate (1),
• cotters.
NOTE:________________________________
Deburr the end of the valve stem with an oiling stone (A2).
NOTE:________________________________
Make sure that every valve has been reinstalled in its origi-
nal position.
NOTE:________________________________
Reinstall the valve cotter pin, pressing the spring on each
valve with the special compression tool (*) Fig. B
(*) Valve spring compressor tool
Code: 0320097050000
Secure:
• the cotters on the valve stems.
Gently tap on the valve tip with a soft hammer, Fig. C.
IMPORTANT NOTICE
Hitting the valve tip with too much force could damage the
valve.
Install:
• the calibrated pad (1)
• the tappet valve (2)
NOTE:________________________________
Lubricate the tappet valve with copper grease (MOLYKOTE
HSC PLUS).
Manually turn the tappet valve, which must be able to slide
smoothly.
Reinstall each tappet valve and pad to its original position.
G
Copper grease
The following process applies to all of the valves and relevant
components.
E
E
E
E
A
1
2
3
4
5
A1
A2
A3
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