Cutter - Drive Belt - Countax A20/50 Operator's Manual

Collector - Drive Belts
REPLACING AND CHECKING, TENSIONING
TENSIONING PTO DRIVE AND REPLACING SIDE
BELT CONNECTION DRIVE BELT (fig 3)
It is important that the belt from PTO to 1. First remove Collector from the
collector (Part No. 22923400) is crossed Tractor (page 14).
over in the correct direction (fig 1) before
being fitted over the collector pulley. The
2. To remove the plastic cover, remove
easiest way to do this is to place the belt
the two nuts and bolts (A) using a 1/2"
on the PTO pulley and then stand behind
spanner and socket.
the Tractor holding the belt with two
hands. Turn the right hand above the left
3. Using a 1/2" spanner and socket,
and fit the belt on to the collector pulley.
slacken the nut and bolt (B) holding
the tension pulley and slide the pulley
To check that you have this right - start
out of the way.
your Tractor and engage the PTO lever
and check that the brush is revolving
4. Remove the belt and fit the Countax
against the forward direction of the
replacement (Dayco Super II A38 Part
Tractor (see page 15 fig 1).
No. 22950300)
CORRECT BELT TENSION
5. Tension the belt by sliding back and
To check tension:
securing the belt tensioner. The tension
1. Lower the collector to the operating is not critical but the belt must not be
position and check the tension using a too tight. The ideal is 13mm (1/2")
spring balance and a ruler. deflection at 2Kgs (4/5lbs) pull -
use a spring balance and ruler or tape
to check.
2. Select a place on the belt midway
between the PTO pulley and the
collector pulley. 6. Make sure that the rectangular cover
plate fits over the adjustment slot -
failure to do this will allow cuttings
3. Pull and measure the deflection using a
and grit to accumulate and damage the
ruler (fig 2). It should be 19mm at 2kgs
pulleys and belt assembly.
(4-5lbs).
7.Replace the plastic cover.
If the tension needs to be adjusted - first:
1. Relocate the Collector from the
Tractor.
PLEASE NOTE:
2. Locate the adjustment holes on the
The information contained in
Locking Arms. These holes take the
the following pages is given
nuts and bolts on which the Locking
on the understanding that
Arm hinges.
Countax accepts no
3. To increase tension on the belt undo responsibility for work
each nut and bolt and relocate them
carried out by a customer or
one or more holes forward (towards
for any damage thus caused,
the Tractor). To slacken move the bolts
whether or not the service
back. Ideally the bolts should be in the
instructions have been
same hole on each Locking Arm,
misunderstood. To be
however fine adjustment to get the
right tension may only permit you to
absolutely sure that your
move one bolt - this is OK but there
warranty terms are not
should not be more than one hole
breached, service work
difference from side to side.
should only be carried out by
a Countax dealer.
4. Replace the Collector on the Tractor
and re-check the belt tension.
fig 1
19mm deflection 2kgs push or pull
To Slacken
fig 2
Kg
fig 3
B
A
Page 16

Cutter - Drive Belt

Specified Belts and Blades
Engine/Deck Belt - B57 Dayco Super II -
Pt No. 22940100
Deck Internal Drive (Mulcher) - BB112
Pt No. 228000900
(Rear Discharge) - Dayco Super II BB155
Pt No. 22950200
Mulcher Blades x3 Pt No. - 16938100
IBS RH Blade Pt No. 169381300
IBS LH Blade Pt No. 169381400
IBS Front Blade Pt No. 1692000
PGC A49 Drive Belt Pt No. 22923400
To Tighten
PTO Drive Belt - Dayco Super II A92 -
Pt No. 22950100
Transmission Drive Belts - A91 Dayco
Super II - Pt No. 228001500
N.B. Only use specified Belts and Blades
- Never accept a substitute!
Before carrying out tests or adjustments
(the problem may be simpler) – first
CHECK the following points:
1. Is the Engine to Cutter Drive Belt
cm 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.
fig 1
De-Tensioned
View from underside
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 decal).
2. Select the midway position on the Belt
between the front (Electric Clutch)
pulley and rear (Cutter Deck) pulley
and using, a spring balance; apply a
2Kg (4 to 5lbs) pull (fig 2).
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.
Kg
fig 2
cm
To correct the tension, follow this
procedure:
Cutter Belt
Tensioned 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 a
hot exhaust, locate the Trunnion at the
Cutter Belt
end of the Belt Tension Rod – lift the
bonnet and look to the front (nearside)
close to the exhaust (see fig 3).
3. Remove the spring clip and washer
holding the Trunnion in place on the
Deck Tension Cradle (fig 3a) and
release the Trunnion so it can be
turned.
4. Both the Trunnion and the Belt Tension
Page 13
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 Tensioner Lever –
then re-check the Belt tension.
fig 3
fig 3a
Deck Tension Rod
Deck Tension
Cradle
Spring Clip
Washer
Trunnion
WARNING
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 will NOT be covered by
warranty you may prefer that your
dealer sets the tension.