COX A20318L, Owner'S Manual

Page: 12 / 90

Page 12 December 2018 OWNERS MANUAL FOR MODEL A20318L
MAINTENANCE INSTRUCTIONS
It is the owner’s responsibility to
ensure that all-periodical checks,
necessary adjustments, services and
repairs are carried out. Failure to do so
may result in death, personal injury
and/or property damage.
Before attempting any maintenance, stop engine,
ensure mowing attachment blades have stopped
rotating, disconnect spark plug lead from spark plug
and ground it, disconnect battery at negative
terminal, to prevent accidental starting.
Position machine on a flat level surface for
maintenance.
Never alter factory setting of maximum engine
R.P.M (3600).
Reference to the left or right side of the machine is
determined by sitting in the operating position.
IMPORTANT: If operating in adverse conditions,
such as those mentioned below, changing engine
oil, air filter, lubrication, and all adjustments should
be carried out at shorter time intervals than
specified in this booklets’ maintenance schedule.
Adverse conditions can include:-

Mowing in hot or wet conditions.

Mowing in rough or dusty conditions.

Mowing hilly areas or continuous heavy load
conditions.
Ensure machine has park brake engaged when
attempting to start engine.
CHECK & ADJUST ENGINE OIL LEVEL - Refer
to engine owners manual for correct method to
check & adjust engine oil level.
CHANGE ENGINE OIL & OIL FILTER - Refer to
engine owner’s manual for correct method to
change engine oil & oil filter.
CHECK ENGINE AIR CLEANER & FOAM PRE-
CLEANER
- Refer to engine owners manual for
correct method to check and service engine air
cleaner & foam pre-cleaner.
CHECK ENGINE ROTATING SCREEN- Refer to
engine owners manual for correct method to check
and clean engine rotating screen /debris guard.
LUBRICATION OF MACHINE- Lubrication of
machine must be carried out every 15 hours of
operation or once a month, whichever occurs first.
Lubricate at shorter time intervals when operated
under adverse conditions.
OILING- A few drops of oil should be placed at the
following points: Steering rod ends, mower
suspension link rod end, height adjustment
mechanism, pivot bolt and linkages on drive
system, clutch pedal and brake linkages.
CHAIN- Use only chain lube for lubrication of
the drive chain.
GREASE POINTS- Grease nipples are located
on top of the front wheel stub axles & the back
of the drive arm.
GREASE STUB AXLES:
Clean grease nipple, use grease gun and general-
purpose grease to force old grease from top and
bottom of front axle bushes. If grease is not
released from bottom of bush jack up front of
machine and try again .
ENGINE TO PLATE CLUTCH VEE BELT
ADJUSTMENT-
Tension is automatically
adjusted by the belt tensioning spring.
ENGINE TO CUTTER VEE BELT
ADJUSTMENT-
Tension is automatically
adjusted by the belt tensioning springs.
CHECK OPERATION OF SAFETY
SWITCHES:
STARTING
Foot Switch
- With the PTO (power take off)
switch in disengaged position (off), attempt to
start the engine without depressing the foot
switch.
Engine should not start.
PTO Switch - While sitting on seat with foot on
foot switch and PTO switch in up (engaged)
position, attempt to start the engine.
Engine should not start.
Key Switch
With PTO switch in down (disengaged/off)
position & foot switch depressed turn key
switch to start position.
Engine should start.
STOPPING
Seat Switch
- While sitting on seat with engine
running, engage cutter, and lift weight from
seat.
Engine should stop.
Key Switch
Sit on seat and start engine, turn key switch to
stop position.
Engine should stop.
WHEELS-
The rear wheel nuts should be re-tensioned
after the first 5 hrs of operation to 44Nm (33ft
lbs), then regularly with your preventative
maintenance checks. Before re-tensioning the
LH rear nuts on the model fitted with a
differential, make sure that the key
engagement block slides freely into the
engagement plate.
DRIVE CHAIN- Machines are fitted with manual
chain adjusters. Adjustment is required
periodically as per maintenance schedule.
Replace chain when chain has sagged enough
to expose half the depth of the teeth on the
bottom of the large sprocket. Failure to replace
worn chain will cause premature wear of
sprockets.
REPLACE DRIVE CHAIN- Stop engine,
ensure mowing attachment blades have
stopped rotating, disconnect spark plug lead
from spark plug and ground it, disconnect
battery at negative terminal, to prevent
accidental starting. Engage park brake, jack up
rear of machine, and remove left rear wheel.
Loosen both nuts holding chain tensioner arm
in place. Release park brake and then turn rear
axle to bring chain into a suitable position for
removal of the chain connection link. Remove
connecting link and chain. Inspect both
sprockets for wear or damage, replace if
necessary. Install new chain and connecting
link. Slide and hold the chain tension arm into a
position to tension the chain, then immediately
tighten one of the 2 nuts on the tension arm to
keep it in place. Next torque both nuts on the
tension arm up to 44NM Engage park brake,
install wheel and lower machine.
CUTTER HEIGHT ADJUSTMENT (STEEL
DECK)-
Stop engine, ensure mowing
attachment blades have stopped rotating,
disconnect spark plug lead from spark plug and
ground it, disconnect battery at negative
terminal, to prevent accidental starting. If the
Mowing Attachment can not be positioned to
give a satisfactory grass cut height using the
available notches on the cut height
mechanism, position the mower on a smooth
level surface, lock the park brake on, and lower
the Mowing Attachment to the notch above the
desired cut height. Place 3 equal height
spacers (that can support the mowing
attachments weight) , of the desired height,
under the mowing attachment one on each
side at the lower front adjacent to the cut-out &
one at the middle of the back and lower the
Mowing Attachment onto them. Loosen the 2
short screws located together on the front of
the rear suspension mount. Push the rear link
rearwards until it stops and retighten the 2
screws. Lift the Mowing attachment off the
spacers and remove the spacers and check
the cut height is as desired and the deck is
level to slightly higher (3—5 mm) at the back.
Adjust height again if required.
REPLACE BLADES (STEEL DECK) - Stop
engine, ensure mowing attachment blades have
stopped rotating, disconnect spark plug lead from
spark plug and ground it, disconnect battery at
negative terminal, to prevent accidental starting.
Check condition of cutter disc remove the blade
nut using a suitable spanner (if using a socket
remove the blanking grommet to gain access to
the blade nut) and replace all blades, bolts, nuts
and washers to preserve balance, tighten blade
nut to (36-40Nm). Do not over tighten. Re-fit
blanking grommet if removed.