J 50 – 50Deluxe – 50Special

The J range was the baby of the Lambretta models, and was primarily designed for ladies, being lightweight and using smaller stretch levers. One piece monocoque frame work went away from the more traditional tubular frame.

 

Specifications


Date of production J50: Oct. 1964~Aug. 1966
J50 Deluxe: Jan. 1968~Oct. 1970
J50 Special: Apr. 1970~May. 1971
Scooters produced 31.021 – 28.852 – 13.599
Capacity 49.8 cc
Bore x stroke 38x44 mm
Carburettor Dellorto SHB 12 – SHB 18-12
Gear 4 speeds Hand controlled
Power 1.7 cv a 4.500 g/min
Speed max 40 – 38.5 – 38,5 (Km/h)
Tyre Size 2,79x9 – 3x10 – 3x10
Brakes alluminium finned drum
Tank capacity 6.2 L
Consumption 63 Km/L
Weight 78 – 80(Kg)
Overall length 1660 mm
Overall eight 1000 mm
Overall width 630 mm
Price 109.000 – 120.000 – 120.000 (Lire)

Identification details


Version I 1964 9-inch wheels, wide leg-shield with no rubber edge trim, aluminium kick-start pedal, part below tail-light smooth, front fork with screw fitting for the dampers.

Version II 1965 – mid-1966 9-inch wheels, wide leg-shield with rubber edge trim, chromed metal kick-start lever, front fork with press-in dampers. Part below the tail-light stamped and carrying J50 script (from March 1966). Simplified side-panel clasps without cog (from January 1966).

Version III mid-1966 – 1967 (official denomination “Model ’66”) New 125 4m-type frame with narrower leg-shield, 9-inch wheels, longer saddle frame, part below the tail-light stamped and carrying J50 script, engine Silent Blocs reinforced.

Frame numbers by year


J50

1964: 400001 – 402799
1965: 402800 – 421383
1966: 421384 – 431022

J50 De Luxe

1968: 500001 – 515098
1969: 515099 – 524143
1970: 524144 – 528853

J50 Special

1970: 500001 – 511447
1971: 5114488 – 513600

Colour schemes 50 De Luxe


Body colour parts Fork, frame, front mudguard, side-panels, handlebar and headset, tail-light body, stand, luggage rack.
Carter aluminium 8081 Wheel hubs, front brake shoe backing plate, wheel rims, spare wheel holder, cylinder head air intake manifold (2 pieces).

Colour schemes 50 Special


Body colour parts Fork, frame, front mudguard, side-panels, handlebar and headset, tail-light body.
Carter aluminium 8081 Fork, stand, wheel hubs, front brake shoe backing plate, wheel rims, spare wheel holder, cylinder head air intake manifold (2 pieces).

Colour schemes J50 till mid-1967


Body colour parts Fork, frame, front mudguard, side-panels, handlebar and headset, wheel hubs, front brake shoe backing plate, wheel rims, spare wheel holder, cylinder head air intake manifold (2 pieces), tail-light body, stand, rear license plate holder.

Colour schemes J50 late-1967 – Jan 1968


Body colour parts Fork, frame, front mudguard, side-panels, handlebar and headset, tail-light body, stand, rear license plate holder.
Carter aluminium 8081 Wheel hubs, front brake shoe backing plate, wheel rims, spare wheel holder.
New White Cylinder head air intake manifold (2 pieces).

Finishes J50


Black finish Saddle frame.
Aluminium Rear damper.
Crank case Bare aluminium.
Carburettor Carburettor body and float chamber cover bare aluminium, zinc-plated screws and fittings.
Control cable sheaths Grey.
Saddles Black imitation leather version I and II. Dark blue imitation leather version III. Both with “Innocenti” rear script.
Silencer Painted aluminium silver.

Finishes 50 De Luxe – Special


Grey primer Fuel tank.
Black Saddle frame. Fuel tap and choke levers (50 S).
Aluminium finish Rear damper.
Crank case Bare aluminium.
Carburettor Carburettor body and float chamber cover bare aluminium, zinc-plated screws and fittings.
Control cable sheaths Grey (50 DL), black (50 S).
Saddles 50 DL, dark blue imitation leather with rear “Lambretta Innocenti” script. 50 S, brown imitation leather in centre, black sides and descending rear section.
Silencer Aluminium

Chromed parts J50


Frame Brake pedal, all leh-shield scripts, threaded kick-start lever bush, rear J50 script.
Electrical parts Headlamp bezel, light switch cover, horn grille.
Engine Kick-start lever (if in steel).

Chromed parts 50 De Luxe – Special


Frame Brake pedal, all leg-shield scripts, Special script on side-panel (in some cases a De Luxe script in chrome-plated brass may be found on the side-panels), lifting handle fixing plate and screws (50 S).
Electrical parts Headlamp bezel, light switch cover, horn grille.
Engine Kick-start lever.

Zinc-plated parts J50


Front fork Screws and pins, wheel carriers.
Frame All screws and bolts, special washers, bushes, stand mounting plates.
Engine Levers, studs, nuts, and bolts, oil caps.
Wheels Plain and cap nuts, bushes, wheel hub brake levers.

Zinc-plated parts 50 De Luxe – Special


Front fork Screws and pins, wheel carriers.
Frame All screws and bolts, special washers, bushes. Stop plates for the shaped bars of the side-panel catches, stand fixing plates.
Engine Levers, studs, nuts, and bolts, oil caps.
Wheels Plain and cap nuts, bushes, wheel hub brake levers.

Burnished parts J50


Engine Air filter pipe fixing spring.
Frame Plates and shaped bars for side-panel catches, stand spring, brake pedal spring, large rear suspension spring.
Burnished parts 50 De Luxe – Special
Frame Shaped bar for side-panel catch, stand spring, brake pedal spring, large rear suspension spring.

Polished parts J 50


Frame Fuel tap and choke levers, side-panel levers, handlebar levers, handlebar lever carriers, leg-shield profile terminals.

Polished parts 50 De Luxe – Special


Frame Handlebar levers and lever carriers, aluminium leg-shield border. 50 DL only: floorboard runners and ferrules, fuel tap and choke levers.

Lechler system colours


J50 version I and II
New White 8059
Ruby Red 8047

J50 Two tone models:
Light olive green 8079 (for the bodywork)
Dark olive green 8078 (for the side-panels)

J50 version III
New White 8059
Aquamarine blue 8030
Purple 8069
Apple green 8039

50 De Luxe – Special
Carter aluminium (frame) 8081

50 De Luxe
New White 8059
Aquamarine blue 8030
Apple Green 8039

50 Special
Turquoise 8016
Red 8073
Ochre 8080

Maintenance data J50


Fuel/oil mixture 2%
Spark plug Bosch 225/240 long thread
Engine oil SAE 90, 360g
Carburettor Dell’Orto SH 18*12
max jet 62, min 40 – Valve 1
Ignnition advance 20°-22° 1.6-2 mm ahead of Top Dead Centre
Maintenance data 50 De Luxe – Special
Fuel/oil mixture 2%
Spark plug Bosch 225/240 long thread
Engine oil SAE 90, 360g
Carburettor Dell’Orto SH 18/12
max jet 62, min 40 – Valve 1
Ignnition advance 20°-22° 1.6-2 mm ahead of Top Dead Centre

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