6.1 Adjustments and Settings
6.1.1 Rotor belt
This belt runs from the blade transfer pulley to the rotor shaft. Correct
tension on the rotor belt is provided by an idler pulley in a slot under the
cover. First remove the cover then loosen the bolt holding the rotor
belt idler pulley in place. Slide the pulley so the tension on the rotor
belt is sufficient, then tighten the idler pulley back in place. Replace
the cover.
6.1.2 Rotor Clutch Belt
This belt runs from the engine shaft to the blade transfer pulley. It is
engaged and disengaged by the Pulley Clutch Handle. If it has
become loose you can apply extra tension on the belt by adjusting the
balljoint at the end of the Clutch rod. Tension should not be too tight,
only enough to engage the blades and not incur slippage of the belts
under load.
6.1.3 Jackshaft Drive Belt
This belt is spring tensioned and does not need re-tensioning.
6.1.4 Transmission Drive Belt
This belt runs from the Jackshaft to the transmission. It has two idler
pulleys providing tension to the belt. Excess tension places unnecessary
strain on the transmission and causes premature belt wear.
Inadequate tension will cause slippage and a lack of drive to the rear
wheels; however, the tension required to ensure satisfactory operation
is relatively low. Tension can be increased easily by loosening the lock
nut (higher of two nuts) on the adjusting rod (which is located on top of
the engine base, just in front of the steering column) then turning the
tensioning nut (the lower of the two nuts) in a clockwise direction. Test
the new tension and if sufficient re-tighten the lock nut on the lever.