The belts look as if they are being used as clutches, in lieu of the missing cone clutches. You can see a movable idler in the top section of the double belt drive, and a mystery mechanism in the middle of the single belt drive - it is probably also a clutch. What we really need, though, is some decent pictures. The two we have look as if they were taken by an old phone camera with a well-thumbed lens. The composition isn't so great either.
Note that the mower in Grant's brochure pictures may also have a Honda engine - but it may be an older side valve one (G series) rather than a GX. It is, at a minimum, a different engine. Grant, do you know when SB stopped making the Model 65?
