Moto Guzzi

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Moto Guzzi is an Italian motorcycle manufacturer. They typically didn't make mopeds, but in February 1967, SEIMM (Società Esercizio Industrie Moto Meccaniche), a state controlled receiver, took ownership of Moto Guzzi. The SEIMM oversight saw Moto Guzzi adapting to a cultural shift away from motorcycles to automobiles. The company focused on popular lightweight mopeds well into the 1970s.


There are a few moped types that Moto Guzzi made, including the Trotter, Robin and the Chiu. Some models had a few variations; the Trotter, for example, had a version called the Super with telescopic forks, a Special M (one speed) and a Special V (variable speed), as well as a few other versions. The Robin and Chiu are basically the same bike and make use of a Benelli engine whereas the Trotter used a couple different engines of Moto Guzzi's design.

Trotter Information

1971 Moto Guzzi Trotter Special M
  • The early Trotters came with a manual three speed transmission with a vertical cylinder. The later models had a horizontal cylinder and the engine came in single speed (Special M) or variable speed (Special V) transmissions.
  • The horizontal engine uses an external dry clutch with a pulley or variator, depending on the version of the model, with a belt running to either a rear fixed pulley or a sprung pulley, again, depending on the version of the model.
  • The rear pulley runs a set of reduction gears inside a gear box and has a chain final drive to the rear wheel.
  • On the right hand side of the engine there is a push/pull knob that puts the engine in and out of bicycle mode.
  • The horizontal engine uses Bosh electronics and the crank taper and stator plate are the same as a Puch moped, making replacement quite easy as well as allowing for many upgrade options.
  • This engine made use of a Dellorto SHA 14.12 carburetor.

Robin and Chiu Information

  • The motor is the same as the Benelli G2 motor.
  • The clutch is the same as a 2-shoe Puch clutch.
  • A one speed transmission is all these mopeds came with.
  • These motors came with a 14.9 SHA Dellorto carburetor. Some also have the 14.12 carb and the intakes change accordingly.
  • The tailight, headlight, and speedo are CEV parts.
  • Engine Seals:
15x35x10 (This one is quite expensive and only made by one manufacturer can exchange for 15x35x7)
  • Engine Bearings
6202 C3 - Three of these

An odd thing about Moto Guzzi and Benelli mopeds is that the drive and pedal chains are on the same side. For the Robin and Chiu the chains will be on your left hand side when seated on the moped. The Trotter, however, has the drive and pedal chain on the right hand side.

Wiring Diagram

1978 Moto Guzzi Robin wiring diagram

Parts Compatibility

Some, but not all, parts are interchangeable between the Robin and Chiu. For example, the exhaust on a Chiu was a traditional pipe and baffle design. The Robin used a smaller pan style exhaust.