",eTA
MAINTENANCE
[PRO
12]
COOLING SYSTEM
Remove any build up of grass , dirt or other debris that may clog
the rotating screen and the air cooling system, especially after
prolonged service in cutting high grass .
Remove the blower housing and clean the areas shown to avoid
overheating and engine damage.
It is recommended that this area
be cleaned after approximately 20 hours of operation.
COOLING SYSTEM - FIG. 10
CAUTION
MUFFLER - DEFLECTOR
Ensure
that
the
muffler
and
bumper
bar
are
kept
clear
of
any
grass
build
up.
Excessive
heat
is
generated
in
this
area
and
full
ventilation
is
necessary
for
satisfactory
operation
of
the
machine.
Should
the
deflector
become
dislodged
from
the
muffler
it
should
be replaced
immediately.
DO NOT
use
the
machine
until
a
new
deflector
has been
fitted.
Without
the
deflector,
there
could
be a
potential
fire
hazard in
hot
dry
conditions.
THRorrLE
CONTROL
Proper choke and stop switch operation is dependant upon proper
adjustment of remote controls .
Place speed
control
lever
on
equipment
in
"FAST"
(high
speed)
position.
Loosen
casing
clamp
screw
"C."
Move
casing
"A"
and
wire
until
lever
" E"
touches
link
at
"F."
Tighten
casing
clamp
screw
"C."
Move
control
to
"STOP"
position.
Lever
must
make
good
contact
with
stop
switch
if
so
equipped
.
FAST POSITION
~E
F
THROTTLE CONTROL ADJUSTMENT - FIG. 11
CARBURETTOR ADJUSTMENT
The carburettor has been factory set and minor adjustment may
be required to compensate for differences in fuel, temperature,
altitude and load.
EJ
NOTE
Allow
several
seconds
between
each
adjustment,
for
engine
to
adapt
to
new
setting.
1. Close idle mixture valve clockwise until it just closes . DO NOT
tighten as damage to seat will occur.
2. Open idle valve 1 - 1 1/2 turns anti-clockwise.
Cutter
drive
must
be
disengaged,
drive
selector
must
be in
neutral
position,
air
cleaner
must
be
fitted
and
secured
and
petrol
tank
must
be
half
full.
3. Start engine and let it warm up.
4. With engine running at high speed, adjust the needle valve 1/8
turn at a time, Clockwise or Anti-clockwise until engine runs
smoothly.
IDLE SPEED
ADJUSTING
SCREW
NEEDLE
VALVE
GJ·_--
(HIGH SPEED)
THROTTLE
CARBURETTOR ADJUSTMENT - FIG. 12
5. Move throttle to the slow position and adjust the idle speed
adjustment screw to obtain an engine speed of 1700 to 1800
RPM.
6. Adjust the idle mixture valve slowly clockwise (lean) and anti-
clockwise (rich) until engine runs smoothly.
7. Reset engine idle speed.
8. Check operation. If engine wiil not accelerate properly, the
carburettor should be re-adjusted, usually to a slightly richer
mixture.
DRIVE CHAIN
Chains can be adjusted as follows .
• Hinge seat forward for access to transmission.
• Loosen nut securing intermediate sprocket shaft (Bolt).
• Slide sprocket shaft backwards or forwards until chain is
correctly tensioned, approximately 5mm deflection.
• Retighten nut torque to 170
± 17Nm.
EJ
NOTE
The
chain
should
be
lubricated
with
engine
oil
after
every
use.
If
dirt
has
accumulated
wash
in
kerosene
prior
to
lubricating.
THROTTLE
STOP
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