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Cutter - Drive Belt
Before carrying out tests or adjustments (the problem may be
simpler) – first CHECK the following points:
1. Is the engine to cutter drive belt slipping? Check that the drive
belt tension lever (fig 1) under the left running board is in the
rear (tensioned) position. If not, rectify – this is the most likely
cause.
2. Has debris collected in the cutter deck pulley housing
(page 9)? If so remove the cover and remove the obstruction.
ENGINE TO CUTTER DRIVE BELT TENSION
The correct tension of the cutter drive belt (engine to deck) is
critical. If incorrectly set it can lead to engine damage.
To check the tension, follow this procedure:
1. Put the deck in a middle cutting height (position 5 on the HE
illuminated indicator).
2. Select a midway position on the belt between the front
(electric clutch) pulley and the rear (cutter deck) pulley and
using a spring balance; apply a 2Kg (4 to 5lbs) pull (fig 3).
3. Using a ruler or tape, measure the deflection achieved which
must be 13mm (1/2"). If more, the belt tension must be
increased, if less – decreased.
To correct the tension, follow this procedure:
1. Release the tension on the belt by pulling the belt tension lever
forward (see fig 1).
2. Taking care not to burn yourself on the hot exhaust, locate the
Trunnion at the end of the belt tension rod – lift the bonnet and
look at the front (nearside) close to the exhaust.
3. Remove the spring clip and washer holding the Trunnion in
place on the deck tension cradle (fig 2) and release the
Trunnion so it can be turned.
4. Both the Trunnion and the belt tension rod are threaded. You
increase belt tension by winding the Trunnion towards the end
of the rod and reduce tension by winding in the reverse
direction.
5. Having made the adjustment re-locate and secure the
Trunnion, re-tension the belt with the belt tension lever – then
re-check the belt tension.
Deck Tension
Cradle
Deck Tension
Rod
Trunnion
Washer
Spring Clip
Part No.
