Guide for chain drive

A guide assembly selectively usable for both a first chain drive combined with a first engine body having two screw holes having a distance between said screw holes of a first pitch, and a second chain drive combined with a second engine body having two screw holes having a distance between said screw holes of a second pitch different from said first pitch;

• said guide assembly comprising a guide having an elongated shoe surface and at least two projecting mounting portions spaced apart longitudinally of said shoe surface, and at least two screws, said guide adapted to be attached to the first or second engine body by means of said two screws passing through said at least two mounting portions respectively and adapted to be threaded into the screw holes in the engine body,
• at least one of said mounting portions having at least two circular mounting holes spaced apart longitudinally of said shoe surface by a distance equal to the difference between said first and second pitches, and said guide can be selectively mounted on said first engine body or said second engine body by the passing of said screw through at least one of said circular mounting holes.