Benelli TRK 502 User Manual

EN
6
Periodic maintenance and adjustment
6 - 9
Checking the spark plugs
The spark plugs are important engine compo-
nents, which should be checked periodically,
preferably by a Benelli dealer.
Since heat and deposits will cause any spark
plug to slowly erode, they should be removed
and checked in accordance with the periodic
maintenance and lubrication chart. In addi-
tion, the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the center
electrode of each spark plug should be a me-
dium-to-light tan (the ideal color when the
vehicle is ridden normally), and all spark plugs
installed in the engine should have the same
color. If any spark plug shows a distinctly dif-
ferent color, the engine could be operating
improperly.
Do not attempt to diagnose such problems
yourself. Instead, have a Benelli dealer check
the vehicle.
If a spark plug shows signs of electrode ero-
sion and excessive carbon or other deposits, it
should be replaced.
Before installing a spark plug, the spark plug
gap should be measured with a wire thickness
gauge and, if necessary, adjusted to specica-
tion.
Clean the surface of the spark plug gasket and
its mating surface, and then wipe o any gri-
me from the spark plug threads.
TIP
If a torque wrench is not available when in-
stalling a spark plug, a good estimate of the
correct torque is 1/4–1/2 turn past nger ti-
ght.
However, the spark plug should be tightened
to the specied torque as soon as possible.
1
NO. Part
Maintenance interven-
tion or control
0 Km
(0 mi)
Pre-delivery
1000 Km
(621 mi)
1°
Service
4,000 Km
(2,486 mi)
2°
Service
7,000 Km
(4,350 mi)
3°
Service
10,000 Km
(6,214 mi)
4°
Service
13,000 Km
(8,078 mi)
5°
Service
Annual
inspec-
tion
48 ◙
Lid screws
clutch
Check T T T T T
49 ◙
Catalytic
converter
Check for faults/leaks
I I I I I
No maintenance required. In case of malfunction replace.
50 ◙
Canister
Check for faults/leaks
I I I I I
No maintenance required. In case of malfunction replace.
51 ◙
Brake/clutch
hoses
Check for faults/leaks I I I I I I I
52 ◙
Parts and wires
subject to
movement
Check/Replacement
I I I I I I I
Replace if damaged.
53 ◙
Check/Replacement I I I I
Specied spark plug:
NGK CR8E
1. Spark plug gap
Spark plug gap:
0.7~0.8 mm (0.027~0.031 in)
Tightening torque:
15 N·m (1.5 kgf·m, 11 lb·ft)

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