These three models are commonly refered to as the 'FLI' due to the engine prefix but there are differences and it is important to know which model you are purchasing parts for.
The Series 2 Li 175 and the Lambro 175 are very similar models, both featuring the wider cabin but there are differences which occured over the production. In 1963, at chassis number 499501 the Li 175 Series 2 officially became the Lambro 175.
The Series 1 Li 175 is the narrow cab version. The majority of the engines were handstart but a kickstart was avaliable.