Moto Guzzi Griso 850 Service Manual (2006-2007)

Moto Guzzi launched the original Griso 1100 in September 2005 as one of the defining motorcycles of the marque’s revival under Aprilia and then Piaggio ownership. Its long, low stance, exposed transverse V-twin and unusually architectural bodywork set it apart from conventional naked bikes. The Griso was conceived less as a stripped sportsbike than as a muscular roadster built around Moto Guzzi’s big-block engine and shaft-drive identity. Moto Guzzi’s official historical overview records the Griso 1100’s 2005 launch and the arrival of the 850 cc version from April 2006.

The Griso 850 broadened that concept into a slightly smaller-displacement model without abandoning the same distinctive chassis and styling. Its 877 cc air-cooled 90-degree V-twin used a 92 × 66 mm bore and stroke, 9.8:1 compression, two valves per cylinder and Weber-Marelli electronic injection through 45 mm throttle bodies. Moto Guzzi’s period brochure rated the engine at 56 kW at 7,800 rpm and 70 Nm at 6,800 rpm. The engine was paired with a hydraulically operated dry twin-disc clutch, six-speed gearbox and the company’s CA.R.C.-type reactive shaft-drive layout, giving the 850 much of the larger Griso’s mechanical character in a less powerful package.

The chassis remained substantial and road focused. A high-strength tubular-steel double-cradle frame, 43 mm fully adjustable upside-down fork, progressive-link rear monoshock, 17-inch cast-aluminium wheels and twin 320 mm front discs gave the motorcycle hardware closer to the 1100 than to a budget middleweight. The 1,554 mm wheelbase, 800 mm seat and wide stance produced a stable, deliberate riding character. With 17.2 litres of fuel and a factory kerb weight of 240 kg, it was best understood as a distinctive Italian shaft-drive naked roadster rather than a lightweight commuter.

The Griso 850 had a short production life. Parts-catalogue records identify the model as a 2006-2007 generation, while Piaggio’s 2006 reporting confirms the introduction of the new 850 cc Griso during that year. In September 2007 the company presented the Griso 1200 8V, the first Moto Guzzi to use the new four-valve-per-cylinder big-block engine. That model became the major technical evolution of the Griso line, while the 850 remained an important transitional version that brought the original Griso design into a broader displacement class. Piaggio’s 2007 Griso 8V presentation announcement documents the beginning of that next phase.

This product covers the 2006-2007 Griso 850 generation documented by factory Service Station Manual 854337. The manual is specific to the 877 cc two-valve model and should not be treated as service documentation for the later 1200 8V generation. Related workshop documentation is grouped in the Moto Guzzi Griso 850 service manual catalog.