Aprilia RS125 Specifications And Repair Manual

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Filed Under (Aprilia) by admin on 24-11-2010

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TECHNICAL DATA DIMENSIONS Max. length 1955 mm (76.97 in.) Max. width 720 mm (28.34 ) in. Max. height (at headlight fairing) 1100 mm (43.31 in.) Seat height 805 mm (31.69 in.) Wheelbase 1345 mm (52.95 in.) Minimum ground clearance 163 mm (6.42 in.) Weight in running order (including fluids and fuel) 137 kg (302.03 lb.) ENGINE Type Single-cylinder 2-stroke with reed intake. Separate lubrication with automatic variable mixer ( 1.0 – 3.0 %). Number of cylinders 1 Total displacement 124.82 cu cm (7.62 cu. in.) Bore/stroke 54 mm /54.5 mm (2.12 in. /2.14 in.). Compression ratio 12.5 ± 0.5 : 1 Squish clearance 1.5 mm (0.06 in.) Engine idling speed 1250 ± 100 rpm Engine maximum rpm 11000 ± 100 rpm Ignition CDI ignition system with electronic spark timing Starting Electric starter Clutch Multiplate wet clutch, with control lever on left handlebar Gearbox mechanical, 6-speed, with control pedal on left side of engine Gearbox lubrication Splash lubrication Lubricating system Separate lubrication with automatic variable mixer ( 1.0 – 1.3 %) CAPACITIES Fuel (including reserve) 14 l ± 0.5 l (3.70 USgal ± 0.13 USgal) (3.08 gal ± 0.11 gal) Fuel reserve 3.5 l (0.92 USgal) (0.77 gal) Gearbox fluid 600 cu cm (36.61 cu. in.) Gearbox fluid 600 cu cm (36.61 cu. in.) Coolant 0.8 l (50% water + 50% antifreeze with ethylene glycol) (0.21 USgal) (0.17 gal) Mixer oil (reserve included) 1,7 l (0.45 USgal) (0.37 gal) Mixer oil reserve 0.6 l (0.16 USgal) (0.16 gal) Front fork oil/air 440 ± 2,5 cm³ (26.85 ± 0.15 cuin) Seat 2 Vehicle max. load (rider + passenger + luggage) 180 kg (396.83 lb.) TRANSMISSION SYSTEM GEAR RATIOS Ratio 1st 2nd 3rd 4th 5th 6th Primary 19/63 = 1: 3.316 Final 10/30 = 1: 3.000 14/29 = 1: 2.071 17/27 = 1: 1.588 19/25 = 1: 1.316 21/24 = 1: 1.143 22/23 = 1: 1.045 Final ratio 17/40 = 1: 2.353 Total ratio 1 : 23.406 1 : 16.161 1 : 12.391 1 : 10.266 1 : 8.916 1 : 8.156 FUEL SYSTEM Type Carbureted Model DELL’ORTO PHBH 28 FUEL SYSTEM Fuel Premium-grade unleaded petrol, minimum octane rating 95 (RON) and 85 (MON), as per DIN 51 607

CARBURETOR: BASIC PRINCIPLES

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Filed Under (Tips and Review) by admin on 16-11-2010

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On the right, the main components of a Dell’Orto motorcycle carburetor are shown: 1. starting lever; 2. air intake; 3. venturi; 4. starter jet; 5. float chamber; 6. atomizer; 7. fuel valve; 8. needle; 9. throttle valve; 10. float chamber air intake; II. fuel connection; 12. Idle mixture adjusting screw; 13. throttle valve adjusting screw; 14. float; 15. idle emulsion tube, 16.idle jet; 17. main jet. This is a diagram of the gasoline delivery in the inducted airflow: the fuel inside the float chamber rises in the atomizer (31), going through the jet (32) which adjusts the delivery together with the needle (28); the liquid is emulsified first with the air arriving from the channel (13) inside the nozzle (30) then going into the venturi (29) it mixes with the air coming from the intake

2008 KTM 50 SX JUNIOR 50 SX OWNER'S MANUAL

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Filed Under (KTM) by admin on 22-10-2010

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Choke Dell’Orto carburetor PHVA 14 DS (50SXJunior) Choke lever [1] is mounted to the right side of the carburetor. If you move the choke lever up to the stop, a hole is opened in the carburetor through which the engine can draw in additional fuel. This results in a “rich” fuel-air mixture required for a cold start. Moving the choke lever back closes the hole in the carburetor again. Choke Dell’Orto carburetor PHBG 19 BS (50 SX) Choke control knob [2] is mounted to the left side of the carburetor. If you pull the choke control knob up to the stop and turn it 90º, a hole is opened in the carburetor through which the engine can draw additional fuel. This results in a “rich” fuel-air mixture required for a cold start. Turning back the choke control knob returns the knob to the starting position and closes the hole in the carburetor again. Kickstarter The kickstarter is mounted on the right side of the engine. Its upper part can be swivelled. Foot brake lever The foot brake lever is located in front of the right footrest. The basic position can be adjusted to the seating position (see maintenance work). Side stand (50 SXJunior) Use your foot to swing the side stand forwards to the stop. Make sure it rests securely on solid ground.