The Series one was the first to feature a chain drive. All subsequent Lambretta models adapted this principal. These models also began the feature of having handle bar or headset cast in alloy instead of the ealier model “motorcycle” type bars.
Specifications
Date of production Apr. 1958~Oct.1959
Scooters produced 44.747 – 110.944 – 18.858
Capacity 123 cc – 148 cc – 170 cc
Bore x stroke 52×58 – 57×58 – 60×60 (mm)
Carburettor Dellorto MA 18 BS5 – MA 19 BS5 – Forced air controlled MA 23 BS5
Gear 4 speeds Hand Controlled
Power 5.2 cv a 5.200 g/min – 6.5 cv a 5.300 g/min – 8.6 hp a 6.000 rev/min
Speed max 68-70 – 78-80 – 103 (Km/h)
Tyre Size 3,50×10
Brakes alluminium finned drum
Tank capacity 8.7 L
Consumption 42 – 43 – 31(Km/L)
Weight 104 – 105 – 115 (Kg)
Overall length 1825 mm
Overall eight 1038 – 1038 – 1070 mm
Overall width 710 mm
Colors blue, grey, red – Ivory. Wheels partially cromed
Panels color blue, green
Price 155.000 – 174.000 – 199.000 (Lire)
Identification details 125-150 LI
Version I to September 1958 Oval air intakes at the base of the side-panels (early examples through to June 1958), fixed, non-adjustable chain tensioner guides, air filter with metal mesh with air intake beneath the rear saddle, passenger grab handle on rear saddle.
125 LI only: earliest examples without leg-shield rubber profile trim and without steering lock.
Version II September 1958 – December 1958 Adjustable chain tensioner guides, cylindrical supplementary filter with paper element, passenger grab handle on front saddle, additional dust protection bellows on rear brake cable
Version III December 1958 – to end of production New induction system with oval filter and air intake beneath the front saddle, shorter exhaust tail-pipe collar, rear brake pedal with small spray guard.
Identification details 175 TV
Version I to April 1958 Headlamp cowl with integrated horn grille (non-removable), flywheel side ball bearings.
First 1800 examples only: brake clutch control regulators functioning, subsequently locked with a pin.
Version II May 1958 – July 1958 Removable headlamp cowl with integrated horn grille, flywheel side roller bearings, stand mudguard, additional locking washer on rear wheel nut.
Version III July 1958 – to end of production Brake-clutch control regulators eliminated, additional rubber protection on rear brake cable.
Frame numbers by year
Li 125
1958: 500,000 – 520,809
1959: 520,810 – 547,747
Li 150
1958: 500,000 – 541,924
1959: 541,925 – 610,944
TV 175
1957: 001,001 – 002126
1958: 002127 – 011088
Colour schemes and finishes 175 TV
Body colour parts Fork, frame, leg-shield, fuel tank, front and rear mudguards, headlamp cowling ( and horn grille version II and III), sidepanels, handlebar and headset, floorboard tunnel, wheel hubs, Front brake shoe backing plate, saddle frame and fixing plate, spare wheel holder, cylinder head air intake manifold (4 pieces), 1 rear and 2 front dampers, tail-light body, glovebox lid, stand, battery holder, round recrifier cover and bracket, carburettor intake duct, stand mudguard (version II and III), rear air intake grille fins.
Wheel rims Version I painted only on the side of the wheel nuts, the rest chomed, version II and IOII, th painted part reaches the curve of the shoulder and only the border of the shoulder is chromed.
Crankcase Bare aluminium.
Carburettor Carburettor body, air filter and float chamber cover bare aluminium, zinc-plated air filter cover, screws and fittings.
Control cable sheaths Grey.
Saddle Black imitation leather “Innocenti” rear script.
Silencer Black.
Colour scheme 150 LI
Body colour parts Fork, frame, leg-shield, fuel tank, front mudguard inside and outside, rear mudguard, floorboard tunnel, wheel hubs, front brake shoe backing plate, wheel rims saddle frame and large central springs, spare wheel holder, cylinder head air intake manifold (2 pieces), glovebox and lid, tail-light body, fuel tap hatch stand, stand mudguard, battery holder, round rectifier cover and bracket, right-hand rear floorboard L-bracket, license plate holder. Carburettor intake duct ( Version I only). Intake manifold, filter holder and air intake beneath saddle (Version III only). If the base colour is River Grey (especially the earliest examples with the oval side-panel air intakes) the headlamp cowling, the horn grille, the handlebar and head the side-panels are painteed in the same colour. If instead the base colour is Dawn Grey, these elements may be painted in the following colour variants: Flaminia Blue, England Blue, Nile Green, Ruby Red, Coral Red.
Colour scheme 125 LI
Body colour parts (Dawn Grey only) Fork, frame, leg-shield, headlamp cowling, horn grille, handlebar and headset, speedometer plug, handlebar lever carriers, rear air intake grille, fuel tank, front mudguard inside and outside, rear mudguard, floorboard tunnel, wheel hubs, front brake shoe backing plate, saddle frame and large central springs, spare wheel holder, cylinder head air intake manifold (2 pieces), tail-light body, glovebox lid, fuel tap hatch, stand, stand mudguard, glovebox, right-hand rear floorboard L-bracket. Carburettor intake duct (Version I only). Intake manifold, filter holder and air intake beneath saddle (Version III only). The side-panels only are painted dark Steel Grey, license plate holder.
Finishes 125-150 LI
Black finish Rear damper.
Crankcase Bare aluminium.
Carburettor Carburettor body, air filter and float chamber cover bare aluminium, zinc-plated screws and fittings. Cylindrical supplementary filter box (Version II) painted black.
Control cable sheaths Grey.
Saddles Black imitation leather with “Innocenti” rear script.
Silencer Matte black.
Chromed parts 175 TV
Frame Rear brake pedal, handlebar adjusters, threaded kick-start lever bush, steering lock cover, ring below handlebars, all scripts on leg-shield and side-panels, lower steering head bearong cap, glovebox lid lock. Front suspension wheel carriers (rough chromed).
Electrical parts Headlamp bezel, bezel screws and washers, ignition lock bezel and cover.
Engine Kick-start lever and spring cover.
Wheels Rims (part painted).
Chromed parts 125-150 LI
Frame Brake pedal, frame tube cable circlip, “Lambretta LI” script on leg-shield, ring beneath steeringhead, threaded kick-start lever bush, glovebox lock.
Electrical parts Headlamp bezel, right-hand light switch screws and cover.
Engine Kick-start lever.
Nickel-plated parts 175 TV 125-150 LI
Lubricators, oil caps.
Cadium-plated parts 175 TV
Front fork screws and pins.
Frame All screws and bolts, special washers, bushes.
Engine Levers, studs, screws.
Wheels Plain and cap nuts, bushes, wheel hub brake levers.
Cadium-plated parts 125-150 LI
Front fork screws and pins, lower steering head bearing dust cap, wheel carriers.
Frame All screws and bolts, special washers, bushes. Tie bars, ouns and nuts for horizontal saddle frame springs, stand fixing plates.
Engine Levers, studs, screws and nuts.
Wheels Plain and cap nuts, bushes, wheel hub brake levers.
Electrical parts Rectifier cover (150LI)
Burnished parts 175 TV
Engine Engine pivot.
Burnished parts 125-150 LI
Frame Stand spring, brake pedal spring, fuel tank support straps.
Polished parts 175 TV
Frame Handlebar levers and carriers, fuel tap and choke levers, side panel levers, speedometer bezel, leg shield profile terminals, rear air intake grill (external part only).
Electrical parts Handlebar light switch cover.
Polished parts 125-150 LI
Frame Fuel tap and choke levers, handlebar levers, side-panel levers, speedometer bezel, Lambretta script on side-panels, floorboard runners, leg shield profile terminals.
150 LI only: handlebar lever carriers, rear air intake grill, floorboard runner ferrules.
Electrical parts Handlebar off switch.
Lechler system colours 175 TV
Ivory 8028
Lechler system colours 125-150 LI
125 LI
Dawn Grey 8019
Dark Steel Grey 8040 (125 side-panels only)
150 LI
River Grey 8014 (single-colour bodywork)
Dawn Grey 8019 (two-tone bodywork)
For the side-panels, the headlamp cowling, horn grille, handlebar and headset:
Flaminia Blue 8032
England Blue 8031
Nile Green 8015
Ruby Red 8047
Coral Red 8046
Maintenance data 175 TV
Fuel/oil mixture 6%
Spark plug Bosch 225/240 long thread
Engine oil SAE 30, 1000cc
Final drive SAE 140 100g
Carburettor Dell’Orto MA 23BS5
max jet 105, min 40 – Valve 70
Ignition advance 24°-28° 32-33mm on the flywheel circumference
Maintenance data 125-150 LI
Fuel/oil mixture 4%
Spark plug Bosch 225/240 long thread
Engine oil SAE 90, 600cc
Carburettor (150 LI) Dell’Orto MA 19BS5
max jet 96, min 40 – Valve 65
Carburettor (125 LI) Dell’Orto MA 18BS5
max jet 93, min 35 – Valve 50
Ignition advance 22°-24° 32-33mm on the flywheel circumference