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.

 

 

 

 

 

 

Specified Belts and Blades

 

 

 

 

Part:

 

Part No.

 

 

Engine/Deck Belt -

 

22871200

 

 

Dayco Super II B56 (Mulcher)

 

 

 

 

 

 

 

Engine/Deck Belt -

 

22940100

 

 

Dayco Super II B57 (IBS)

 

 

 

 

 

 

 

Deck Internal Drive (Mulcher)

 

228000900

 

 

BB112

 

 

 

 

 

 

 

 

 

 

 

 

Deck Internal Drive (IBS)

 

22950200

 

 

BB155

 

 

 

 

 

 

 

 

 

 

 

 

Mulcher Blades x3

 

16938100

 

 

IBS RH Blade

 

169381300

 

 

 

 

 

 

 

IBS LH Blade

 

169381400

 

 

PGC Drive Belt A47

22898000

 

 

 

 

 

 

PTO Drive Belt - Dayco II A98

22950100

 

 

Transmission Drive Belts A98

2295000

 

 

Dayco Super II

 

 

 

 

 

 

 

 

 

 

fig 1

Deck

 

Tension Lever

Actuator

De-tensioned

Tensioned

 

Position

Position

fig 2

 

Deck

 

Tension Cradle

 

 

Spring Clip

Deck Tension

 

Rod

Washer

 

Trunnion

Deck Tension

Cradle

fig 3

 

-WARNING-

Kg

On no account must

 

the tractor be run with

 

the engine to cutter

 

drive belt over-

 

tensioned as it will

 

damage the engine.

 

As any such damage

cm

will not be covered by

your warranty you

 

may prefer that your

 

dealer sets the

 

tension.

 

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