Engine
Four-stroke, SOHC; four-valve RFVC™
Four-stroke, SOHC; four-valve RFVC™
Displacement
644 cc
644 cc
Bore x Stroke
3.9 x 3.2 in. (100.0 x 82.0 mm)
3.9 x 3.2 in. (100.0 x 82.0 mm)
Compression Ratio
8.3:1
8.3:1
Carburetion
42.5 mm diaphragm-type CV carburetor
42.5 mm diaphragm-type CV carburetor
Emissions
Meets current EPA standards. California version meets current CARB standards and may differ slightly due to emissions equipment.
Meets current EPA standards. California version meets current CARB standards and may differ slightly due to emissions equipment.
Lubrication
Dry-sump
Dry-sump
Fuel Capacity
2.8 gal.
2.8 gal.