Primary drive

however there are several finger prints inside

Kodiak Ultramatic S

HONDA   C72 & C77  250/300  Models   Factory Owner's Manual

It contains pictures and information for each models produced in 1981 such as:   Class

YAMAHA XS400 Special 1981 Sales Brochure #10 magazine Primary driveYAMAHA XS400 Special 1981 Sales Brochure #10 This Sales Brochure measures 8 1 2 x 11 Inches and has 4 pages. It contains information for each models on the Class, Engine Type, Displacement, Bore & Stroke, Compression Ratio, Carburetion, Transmission, Exhaust System, Clutch, Brakes, Suspension, Tire Size, Wheels, Ignition System, Starting System, Gas Type, Wheelbase, Dry Weight, Overall Length, Overall Width, Seat Height, Fuel Capacity, Colour.