Lambretta

SX

The Special X project was started by Innocenti to design a model with a look of more quality and attention to detail.

 

Specifications


Date of production Oct 1966~jan 1968 – oct 1966~jan 1969
Scooters produced 31.238 – 20.783
Capacity 148 – 198 cc
Bore x stroke 57×58 – 66×58
Carburettor Dellorto SH 1/20
Gear 4 speeds Hand controlled
Power 9,4 cv a 5.600 g/min. – 11 cv a 5.500 g/min
Speed max 90 – 107 (Km/h)
Tyre Size 3.5×10
Brakes alluminium finned drum
Tank capacity 8.1 L
Consumption 41 – 33 (Km/L)
Weight 120 – 123 (Kg)
Overall length 1800 mm
Overall eight 1030 mm
Overall width 700 mm
Price 184.000 – 219.000 (Lire)

Identification details


Version I through to early 1968 Shield front badge, glovebox in painted metal, front fork with bump-stops fixed with screws.

Version II early 1968 – autumn 1968 Rectangular front badge in aluminium, glovebox in grey plastic, front fork with press-in bump stops.

Final batch 1968 Side-panels without aluminium clasps (DL-type fixtures). Addition chrome trim on the front mudguard and polished horn grille on 200 SX model.

Last examples Different colour scheme, 8mm bolts with 13mm heads.

Frame numbers by year


SX 150

1966: 750001 – 753571
1967: 753572 – 767228
1968: 767229 – 781072
1969: 781073 781239

SX 200

1966: 830001 – 842642
1967: 842643 – 847274
1968: 847275 – 850774
1969: 850775 – 850784

Colour schemes


200SX
Bodywork in New White Fork, frame, leg-shield, handlebar and headset, floorboard tunnel, wheel hubs, front brake disc backing plate, wheel rims, spare wheel holder, glovebox lid (if in metal), tail-light body, fuel tap hatch, stand, stand mudguard, battery support strap, fuel tank, cylinder head air intake manifold (2 pieces), glovebox, rear mudguard, air ibox, filter carrier and fuel tank support strap.
Fiat 690 metallic grey Front dampers.

150 SX and last batch
Spring Grey body parts Fork, frame, leg-shield, handlebar and headset, floorboard tunnel, wheel hubs, front brake shoe backing plate, wheel rims, spare wheel holder, glovebox lid, tail-light body, fuel tap hatch, stand, stand mudguard, right-hand rear floorboard L-bracket, air intake beneath saddle, side-pannels, front cowling, front mudguard.
New White Fuel tank, rear mudguard, cylinder head air intake manifold ( pieces), glovebox ( if in metal), air box, filter carrier, fuel tank support strap.

150 – 200 SX last examples
Bodywork in Thorn White Frame, leg-shield, handlebar and headset, floorboard tunnel, glovebox lid, tail-light body, fuel tap hatch, right-hand rear floorboard L-bracket, air intake beneath saddle, side-panels, front cowling, front mudguard, fuel tank, rear mudguard, air box, filter carrier and fuel tank support strap. Stand, stand mudguard, cylinder head air intake manifold (2 pieces), horn grille, battery support strap, fuel tank, glovebox, rear mudguard, fork, stand, stand mudguard.
Aluminium carter 8081 Wheel rims, wheel hubs, front brake shoe backing plate, wheel rims, spare wheel holder.

Finishes


Black finish Rear damper, saddle frame and catch.
Crankcase Bare aluminium.
Carburettor Carburettor body and float chamber cover bare aluminium, zinc-plated screws and fittings.
Control cable sheaths Grey.
Saddles 150 SX: black imitation leather with “Innocenti” or “Giuliari” rear script.
200 SX: dark red imitation leather with “Innocenti” or “Giuliari” rear script.
Silencer Aluminium silver.

Chromed parts


Frame Brake pedal, frame tube cable circlip, all leg-shield scripts, threaded kick-start lever bush, front mudguard trim (150SX and very last 200 SX examples).
Electrical parts Headlamp bezel, right-hand light switch screws and cover, ignition barrel bezel.
Engine Kick-start lever.

Zinc-plated parts


Front fork Screws and pins, lower steeringhead bearing dust cap, wheel carriers.
Frame All screws and bolts, special washers, bushes. Side-panel internal catches.
Engine Levers, studs, nuts, lubricators, oil caps.
wheels Plain and cap nuts, bushes, wheel hub brake levers, disc brake lever cover.

Burnished parts


Engine Air filter pipe fixing spring.
Frame Stand spring, brake pedal spring, plates and shaped bar for side-panel catches.

Polished parts


Frame Fuel tap and choke levers, floorboard runners and ferrules, leg shield profile terminals, handlebar levers and lever carriers, rear badge mount side-panel levers, trim and “Lambretta” scripts. Horn Grille (150SX and last 200SX examples.
Electrical parts Handlebar light switch cover.

Lechler system colours


150 SX
Spring Grey 8070
Apple Green 8039
New White 8059 (internal bodywork parts only)

150 SX – 200SX (last batch)
White Thorn 8082
Carter aluminium (wheels) 8081

200 SX
New White 8059

Maintenance data


Fuel/oil mixture 2% (150 SX) 4% (200 SX)
Spark plug Bosch 225/240 long thread
Engine oil SAE 90, 600cc
Carburettor (150 SX) Dell’Orto SH 1/20
max jet 107, min 45 Valve 2
Carburettor (200 SX) Dell’Orto SH 1/20
max jet 103, min 48 Valve 1
Ignition advance 22°-24° 32-33 mm on flywheel circumference