Italian Production Dates: July 1960 - 1963
Frame Prefix: T41

 

In July 1960 Innocenti launched the Series 2 Lambretta Li175. The most obvious difference was the new larger/wider cab, with a solid roof rather than a sun-shine roof.

The new three-wheeler now also came with both front and rear indicators, the mudguard was changed again, this time becoming much larger than on the Series 1. The electrics were upgraded to 12V from 6V and the hand start method and lever on the Series 1 gave way to a kickstart on the new Series 2 although we believe there was a cross over period where some Series 1 had a kickstart mechanism.

The Li 175 went through a series of changes over its production, from indicators and bulbs, to front forks and doors. These changes were mostly due to changes in the Codice della Strada in Italy which governed vehicles used on Italian roads. For amendments see here.

The Li 175 was later replaced by the Lambro 175 in September 1963. These two models were the most successful of the Lambretta three-wheelers The vehicles were sold worldwide and had an enormous range of uses. For pictures and examples of their uses, please see our Special Uses page

 

Technical Details

**PLEASE NOTE THAT THESE FIGURES HAVE BEEN TAKEN FROM A 1962 PUBLICATION. THERE ARE DIFFERENCES WITH EARLIER AND THE LATER LAMBRO 175 PRODUCED BY INNOCENTI. ITEMS WITH DIFFERENCES (THAT WE HAVE FOUND!) ARE IN RED FOR DIFFERENCES BETWEEN SEPTEMBER 1960 AND FEBRUARY 1962 AND NOTED AT THE END OF THIS INFORMATION. LAMBRO 175 DETAILS CAN BE FOUND HERE**

Overall Dimensions

Maximum Length:	Open Body Type:  2770mm	Maximum height:	Cabin: 1620mm
	Closed Body Type: 2710mm		Open Body: 775mm
			Box Body: 1415mm
Maximum width :	1330mm
Ground Clearance:	120mm	Track width:	1180mm
Wheelbase:	1710mm

 

Frame and Cabin

Frame	Tubular Steel backbone with superstructures for the support of the cab and the body. Cradle for spare wheel
Front suspension:	by means of rocker arms connected to levers with end balls compressing through guide pistons two variable pitch helical springs.
	Possibility of application of the shock absorbers
Rear suspension:	with two longitudinal leaf springs anchored to the frame at the front and shackled at the rear
	Possibility of application of the shock absorbers
Cabin:	Pressed steel, rear window equipped with rear curtain, instrument panel, holes for attaching the door hinges, rear-view mirror.
Windscreen:	Curved glass windscreen with rubber beading.
Windscreen Wiper:	Windscreen wiper hand operated (an electrical windscreen wiper can be fitted in place)
Seat:	Double seat bench over engine cover
Doors:	Doors (accessory) complete with glass windows (left hand door with normal type lock, right hand door with locking device in handle).

 

Wheels and Brakes

Wheels	Interchangeable wheels	Tyres:	front: 4.00 x 8”
	Rims in pressed steel in two halves		rear: 4.00 x 8” T (T mark indicated heavy tread tyres for commercial use)
Brakes: Internal expansion brakes.	mechanically controlled by lever on the right handlebar for the front brake - foot operated hydraulic rear brakes	Tyre pressures at full load:	Front: 2 kg/cm square
	Hand lever parking brakes on rear wheels.		Rear: 3.5 kg/cm square

 

Rear Axle:

Consisting of:	central differential box:
	rear axle housing
	sliding half-shafts easily withdrawn by removal of wheel flange

 

Electrical Equipment

The 6-pin 80W flywheel alternator feeds the 12V - 18 Ah battery through the rectifier-regulator group

The charging circuit is protected by a fuse (15A) located on the wiring block on the crossbar under the seat. The user circuits are protected by 5 fuses (8A each), arranged below the dashboard.

The direction indicators flasher unit and the electrical wiper switch (accessory) are live only with the ignition switched on (ie key and switch on the dashboard in the positions 1,2,3)

The horn and rear stop lights can be operated without ignition key inserted.

The battery must be always regularly connected, otherwise engine start can be faulty and dangerous overloading of the circuits can occur during running.

The red indicator bulb on the dashboard comes on with the ignition on and stays on with the engine running. Should turn off when the ignition is switched off

Position	Use	Number	Features
			Electrical	Type of Bulb	Type of Fitting
Headlight	Dual Filament. Full beam/dipped	1	12V-25 / 25W	Spherical	BA 20 d
Front Side Lights	Parking	2	12V-5/15W	Spherical	BAY 15d/19
	Front Indicators	2	12V-2.5W	Cylindrical	BA 9 s
Rear Side Lights	Parking and Stop	2	12V-5/15W	Spherical	BAY 15d/19
	Rear Indicators	2	12V-15W	Spherical	BA 15 s
Dashboard	Indicative bulbs	3	12V-3W	Festoon	S 7/8
Speedometer (accessory)	Illumination of speedo	1	12V-2.5W	Cylindrical	BA 9 s

Engine

Engine:	Single cylinder two stoke, forced air cooled.	Carburettor	Dell’Orto MA 19 BS 7 – Cartridge type air filter
Bore:	62mm	Choke:	19
Stroke:	58mm	Max. Jet:	80
Capacity:	175cc	Pilot Jet:	40
Compression Ratio:	7	Starter Jet:	55
Output:	7 H.P. at 4750 R.P.M.	Atomizer	260 B
		Needle mounted on the middle notch	D 21

Ignition	flywheel alternator, battery, external HT coil. Fixed advance
Spark Plug:	during running in – 225 Bosch scale heat range
	after running-in – 225 – 240 Bosch scale heat range, according to conditions
Start:	Pedal / Kickstart (on the left of the engine)
Clutch:	Multi-disc type in oil bath
Gear Box:	gearbox with four speeds and reverse constant mesh gears ,alternately splined to the secondary shaft by coupling sliders
Total transmission ratios (Rear Wheel RPM/ENGINE RPM)	1st gear: 1/28.050
	2nd gear: 1/16.107
	3rd gear: 1/10.131
	4th gear: 1/6.875
	Reverse: 1/29.987
Transmission	From engine to gearbox: by gears with flexible coupling.
	From gearbox to rear axle: by hollow shaft with splined couplings and two flexible couplings

 

Performance

Dry Weight without accessories and doors.	Open Type Body              290kg	Useable height of body (box type)	840mm
	Box Type body                  325kg	Maximum permissible total weight (dry weight + accessories & fuel + crew + load)	800kg
Useable length of Body	Open Type Body             1330mm	Max. pay load	Open Body: 400kg
	Box Type body                  1180mm		Closed Body: 380kg
Useable width of body	Open Type Body              1230mm	Max Speed	Empty   38 mph (61km/h)
	Box Type body                  1100mm		At full load 36 mph (58km/h)
Min. Turning Radius:	2300mm	Tank Capacity:	11.5 litres
		Range:	170 miles (275km)
Consumption (to CUNA rules) at full load at 22m.p.h: 80m.p.g (3.5lit/100km)

**Different information published in September 1960 regarding the Li 175.

Maximum Length	Closed Body Type: 2610mm
Electrical Equipment	50W (nomile) flywheel magneto
Front Indicators	12V-3W / BA 15s
Carburettor	BS 5
4th Gear	1/6.850
Useable length of body	Box Type body: 1080mm

 

 

Documents and Pictures

Technical Amendments to the Model

For a list of all technical amendments that we have, for the models we have them for, please see Technical Amendments

Date 26.10.1960	Reference: E/63	Chassis Number: N/A
Relates to / Reason:	Flywheel - the Marelli flywheel is not as strong as other alternatives. If this results in its replacement, it can be replaced with the Ducati Flywheel as on the Lambretta TV 175
Change from:	Marelli 00831616 & 00831625
Change to:	Ducati 00840042

 

Date 03.11.1960	Reference: T/45	Chassis Number: from T/41 452770
Relates to / Reason:	Semi-axles - increased from 20mm to 25mm to increase the resistance of the axle shafts.
Change from:	Left: 40330234 Right: 40330235 Flange: 401608817
Change to:	Left: 41042036 Right: 41042037 Flange: 41045002

 

Date 27.11.1961	Reference: S/34	Chassis Number: from T/41 469619
Relates to / Reason:	Front Forks changed from LD forks
Change from:	41060030 PLUS components - see amendment for details
Change to:	41060090 PLUS components - see amendment for details

 

Date 27.11.1961	Reference: R/31	Chassis Number: N/A
Relates to / Reason:	To avoid front nuts loosening. Following added: 1. Plate nut stopping the front wheel 2. Screw fastening plate nut stopping 3. toothed washer for screw
Change from:	N/A
Change to:	FORK: 41060030 - 1. 41044008 2. 70360716 3. 83110007 FORK: 41060090 - 1. 41044008 2. 70360716 3. 83110007

 

Date 15.02.1962	Reference: M/83	Chassis Number: from T/41 473471
Relates to / Reason:	Kickstart Changes - NB affects interchangeability
Change from:	Notched quadrant : 41010078 Screw: 70390830 Spring Washer: 73170084 Starter Shaft: 19030031
Change to:	Notched quadrant : 41010081 Screw: 70390730 Spring Washer: 73170074 Starter Shaft: 19930031

 

Date 28.02.1962	Reference: S/35	Chassis Number: N/A
Relates to / Reason:	Front Shock Absorbers (accessories) new part numbers for shocks and components following fork changes
Change from:	N/A
Change to:	Front Shock: 41060190 (2pc) Top Attachment Pin: 41060043 (2pc) Bottom Attachment Pin: 41060044 (2pc) Locking nut connectors: 72060008 (6pc) Spring washer: 83100008 (8pc) Flat washer: 73150084 (4pc)

 

Date 05.03.1962	Reference: M/83	Chassis Number:from T/41 473471
Relates to / Reason:	ADDITION TO M/83 - difference in part number for Notched Quadrant
Change from:	Notched quadrant : 41010068
Change to:	Notched quadrant : 41010081

 

Date 05.03.1962	Reference: R/34	Chassis Number:N/A
Relates to / Reason:	Rear Brake groups. Spring washer for locking nut 00671923 changed. Does not alter changeability.
Change from:	83120006
Change to:	41042042

 

Date 09.04.1962	Reference: S/36	Chassis Number:N/A
Relates to / Reason:	Front Shock Absorbers (accessories) now avalibale from Centro Ricambi in loose parts. The number of parts do not exceed the number of Lambretta Li 175
Change from:	N/A
Change to:	N/A

 

Date 18.07.1962	Reference: E/70	Chassis Number:N/A
Relates to / Reason:	Ignition Bulb changed to reduce the brightness. All other inidcative lights remain the same
Change from:	87560300 (12V 3W)
Change to:	87740030 (24V 3W)

 

Date 06.08.1962	Reference: A/15	Chassis Number:N/A
Relates to / Reason:	New metal back. Picture shows difference in the doors
Change from:
Change to:	Closed metal box complete with door: 41057360 Right door complete with lock: 41057390 Door left: 41057380 Lock with handle and keys: 41057410

 

Date 17.01.1963	Reference: M/86	Chassis Number:from T/41 486409
Relates to / Reason:	Pistons - Changed from 2 ring to 3 ring
Change from:	Pistons - 62: 19212090 62.2: 19212100 62.4: 19212110 62.6: 19212120 Piston Rings- 62: 19212024 62.2: 19212025 62.4: 19212026 62.6: 19212027
Change to:	Pistons - 62: 19712090 62.2: 19712100 62.4: 19712110 62.6: 19712120 Piston Rings- 62: 19712024 62.2: 19712025 62.4: 19712026 62.6: 19712027

 

Date 25.03.1963	Reference: T/53	Chassis Number:from T/41 489792
Relates to / Reason:	Doors and cabin changed to remove suicide doors and open from opposite way
Change from:	see amendment
Change to:	see amendment

 

Date 24.06.1963	Reference: T/55	Chassis Number: N/A
Relates to / Reason:	Left and Right hand mats changed. Post modification mats would fit in pre-modification vehicles but not viceversa.
Change from:	LH: 41056161 RH: 41056162
Change to:	LH: 41056235 RH: 41056236

 

Date 24.06.1963	Reference: C/47	Chassis Number: from T/41 494972
Relates to / Reason:	Gearbox changed. Gearbox was supplied without cover (41033020)
Change from:	41033070
Change to:	42033070

 

Date 24.06.1963	Reference: M/87	Chassis Number: from T/41 494972
Relates to / Reason:	Engine - Crankcase, cylinder, cylinder head and seals changed. This is the point where the 200 stud spacing began on the 175 model (with a sleeved barrel)
Change from:	Crankcase: 41010060 Cylinder: 41011010 Base gasket: 19010012 Cylinder head: 19211015 Cylinder Head Gasket: 19211003
Change to:	Crankcase: 42010010 Cylinder: 41011020 Base gasket: 42010005 Cylinder head: 41011018 Cylinder Head Gasket: 41011019

 

Date 26.09.1963	Reference: T/58	Chassis Number: from T/41 499501
Relates to / Reason:	Badges - Central Innocenti and 'Lambretta' 'Li 175' badges removed and replaced with 'Lambro 175' badge
Change from:	41056470
Change to:	41056237

 

NOTE: Technical specifications have been taken directly from Innocenti documentation eg User Manuals for each model. Later workshop manuals and amendments made after the publication of each manual may mean that these details appear differently in other documentation and may be different for your particular model.

Sources:
Lambretta Sales Leaflet (Prop. N 1221/IN-10-61)
Lambretta 175 li seconda series - Uso e manutenzione (Prop. 2077/IT - 2/1962)
Lambretta 175 li Instruction Manual (Prop. 2075/IN 9.1960)
Various Informazione Tecnica - Innocenti