COX A16916F, Owner'S/Operator'S Manual, Page: 12 / 54

21 October 2021 Page 12
Owners Manual for Model A16916F Hydro Drive
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, change engine oil,
air filter, lubrication and adjustments should be
carried out at less time intervals than specified in
this booklets maintenance schedule. Ensure
machine has park brake engaged when attempting
to start engine.
a. Mowing in hot or wet conditions.
b. Mowing in rough or dusty conditions.
c. Mowing hilly areas or continuous heavy
load conditions.
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 BONNET SIDE MESH -
If mesh is more than one quarter blocked by debris
clean mesh. Wipe mesh with hand, rag or brush to
remove debris from mesh.
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 25 hours of
operation or once a month, whichever occurs first.
Lubricate at less 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.
CHAIN: Use only chain lube for lubrication of the
steering chain.
GREASE POINTS: Grease nipples are located on
top of the front wheel stub axles.
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. Iif grease is not
released from bottom of bush jack up front of
machine and try again .
ENGINE TO TRANSMISSION VEE BELT
ADJUSTMENT - Tension is automatically
adjusted by the belt tensioning springs.
ENGINE TO CUTTER VEE BELT
ADJUSTMENT - Tension is automatically
adjusted by the belt tensioning springs.
TO ADJUST STEERING CHAIN - Adjust chain
by loosening the two bolts which hold the
steering idler shaft mounting bracket in
position, slide rearwards to tension chain then
retighten bolts.
CHECK CLUTCH OPERATION – With pedal in up
position check for 3 - 4mm play in the disengage
linkage slot and the disengagement arm pin (adjust
after removing ‘ R ’ pin and washer) and turning
linkage in or out to achieve correct play (replace ‘ R ’
pin and washer).
CHECK BRAKE OPERATION –
Apply Clutch/Brake pedal and set park brake, if
mower can be pushed brake pad, brake spring, or
brake linkage may need servicing.
CHECK OPERATION OF SAFETY
SWITCHES:
STARTING
Clutch/Brake switch
With PTO (power take off) switch in disengaged
position (down/off) attempt to start engine without
the clutch/brake pedal depressed. Engine should
not start.
PTO switch
Sit on seat with the clutch/brake pedal fully
depressed and PTO switch engaged (On), attempt
to start engine. Engine should not start.
Key Switch
With PTO switch in down (disengaged/off)
position & clutch/brake pedal fully depressed
turn key switch to start position. Engine
should start.
STOPPING
Seat switch
Sit on seat and start engine, engage cutter,
(manual or electric control) and lift weight from
seat.
Engine should stop.
Clutch/Brake switch
Sit on seat and start engine depress clutch/brake
pedal and apply park brake, lift weight from sear.
Engine should continue to run.
Sit on seat with engine running and park brake off ,
clutch/brake pedal not depressed 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.
CUTTER BRAKE ADJUSTMENT - Automatically
adjusted by permanent magnets on the electro
magnetic clutch/brake.
CUTTER HEIGHT ADJUSTMENT - 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 - 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.
TO REMOVE MOWING ATTACHMENT –
Stop engine, ensure mowing attachment blades
have stopped rotating, and spark plug lead is
disconnected & grounded, disconnect battery
negative terminal to prevent accidental starting,
disconnect the belt tensioning spring (front left
hand side of mowing attachment). Lower mowing
attachment onto 20mm block front and rear.
Remove cutter belt from engine pulley. Remove
two M10 x 50mm bolts, nuts & washers from
mower suspension link at rear of the mowing
attachment. Remove mowing attachment pivot pin
lock screw and nut (6mm) and remove mowing
attachment pivot pin. Remove the M8x35mm bolt
from the cradle frame attachment bracket. Turn
the front wheels a little to the left and twist the
mowing attachment to the right and slide the deck
from under the mower ro the right side.
Re - assemble in reverse order. To assist in refitting
mowing attachment pivot pin, raise the mowing
attachment slightly. Refit mower suspension link &
lifting links and M10x50mm bolts, nuts and
washers. Refit cutter belt, connect belt tensioning
spring and refit spark plug lead and battery
terminal.
BATTERY MAINTENANCE - Batteries can be
dangerous as they contain acids (corrosive
chemicals), flammable vapours, large amounts of
stored electrical energy, which may cause
chemical burns, explosions or fires. Where
goggles and a protective face guard. Remove
jewellery/watches before handling the battery.
Do not perform any battery maintenance where
there are open flames or the possibility of sparks.
Always work in a well ventilated area. Ensure the
top of the battery is clean and dry (free of dirt and
grime) as a dirty battery can discharge across the
top of the battery casing. Inspect the terminals,
screws and cables for breakage, damage or loose
connections and they are clean, tight and free of
corrosion. When not in use, a battery
discharges by as much as 1% a day, more
when the climate is warm. To make up for this
loss, a boosting charge should be given once a
month. Disconnect battery terminals (negative
terminal first) to charge, then allow to stand
minimum 1/2hr before re - connecting (negative
terminal first). If a battery is not used for a
period of more than three (3) months, the
terminals should be disconnected and trickle
charged at two (2) amps for two (2) hours
once every three (3) months or before use. At
the end of any maintenance ensure the battery
is securely fastened in place, especially if it has
been removed.