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These instructions are meant to augment with any other safety instructions or safe working procedures already existing and are not meant to over ride any of the aforementioned.

Operator’s Guide – Wallaby Fabrication Spreader

Please read and understand before operating

CAUTION: Before test running machine check inside bin for additional components and/or foreign objects and remove immediately.

The following are recommendations for the safe and efficient operation of your Wallaby Fabrication Spreader. Anyone operating the spreader should read these instructions first. These instructions are supplied with your new spreader and are also available free from our works or on our website: - www.spreaders.com.au.

When contacting Wallaby Fabrication please have the chassis number of your spreader handy.


The tractor and/or loader operator(s) must be licensed by the relevant authorities.

No other person should be allowed closer than 50 metres to the spreader during operation or travel. Care must be taken that the operator does not enter the spread pattern by turning too sharply. When operating spreaders with multiple axles the turning circle should be as large as possible to minimize stress on tyres, wheels, axles and suspension components. Pasture damage will also be less if this precaution is observed.

Whilst connecting and disconnecting the P.T.O. pump the tractor engine should be stopped and the tractor parking brake firmly applied. The P.T.O. and /or any other power source should be disconnected from the spreader before any maintenance or cleaning operations. This operation should not be carried out on sloping ground.

Before lifting the P.T.O. pump ensure that it can be done safely and in a position where the possibility of back strain is avoided.

Caution: The hydraulic oil may become dangerously hot. Use gloves when removing the pump unit and use caution around the hydraulic components.

Ensure that quick release hose couplings are correctly connected and protected from contact with any other object which may dislodge the locking mechanism.

The spreader must only be towed by a tractor of sufficient capacity to control the total mass of the spreader and its load.

The pin connecting the spreader to the tractor should also be capable of safely sustaining those forces involved and should be secured against accidental dislodgment.

The draw pin should have 10 – 20mm clearance. Adjust this clearance with a suitable bush. Vertical clearance between the tractor draw bar clevis and the spreader draw eye should be 12 – 25 mm. Adjust this clearance with a suitable packing plate. Excess clearance in these areas greatly magnifies the stresses acting on the components and may cause damage to the spreader draw bar and /or tractor.

A loaded machine must not be towed on the road contrary to the law.

The spreader must not be towed at an unsafe speed.

Aircraft tyres are for low speed off road use only. The terrain and prevailing conditions should be carefully assessed when determining a safe speed.

A safety chain must be used between the tractor and spreader.

When parked the spreader must be secured from rolling away by chocking the wheels. The spreader could roll away during the loading operation if not secured.

The landing leg on the machine is intended to support an empty machine only and must not be used to support a loaded spreader. Make sure this leg is raised before towing the machine.

Never stand or allow any other person to stand on the spinners at any time.









The pressure and condition of the tyres should be checked each day before operation. Unless otherwise advised the minimum pressure is 50 LB/PSI. Wheels should be removed and replaced by suitably qualified personnel only and the wheel nuts should be tightened to the correct torque. If any doubt exists please contact Wallaby Fabrication before using the machine after such an operation. Tightness of the wheel nuts and axle mounting bolts should also be checked regularly. If the specifications for your machine do not appear please contact Wallaby Fabrication.

Do not operate the machine at a greater PTO speed or oil flow or pressure than that for which it was designed. The aforementioned specifications can be obtained from Wallaby Fabrication by calling with the spreader chassis number. All bearings should be greased before each day’s use.

The chains need to be protected from corrosion. This should be done by storing the spreader under cover at all times when not in use, by ensuring the bin is empty before the spreader is left at any time and by lubricating the two vertical drive chains after each day’s use. DO NOT KILL YOUR FLOOR CHAIN WITH KINDNESS. Hosing is not recommended as this embeds any remaining material in the chain and may cause it to rust. Water causes rust, so the chain should be kept dry. To remove remaining material from the spreader – leave the machine running with the door open after spreading is completed. Whilst driving back to the shed any remaining material will fall from the machine. If possible store the machine under cover. If it must be left out make sure one end of the machine is higher so any water will drain freely.

The recommended hydraulic oil is AWS 68 grade. The level should be checked regularly. The spreader should be only half loaded for the first 8 hours of operation. After this time it will be found that the spring tensioning devices on the vertical drive chains will need adjustment. This is achieved by shortening the springs. The tightness of all fasteners should be checked at this time and regularly thereafter.

Never attempt to modify or alter the hydraulic system, including the relief valve.

When machine is operating, keep a regular check that foreign material doesn’t wrap around spinner shafts & cause damage. Foreign material can include baling twine, wire, Kikuyu runners etc that may be picked up from the ground when loading or already be present in material being spread. Warranty is void where care is not taken in this regard.

Spare Parts

If you require spare parts, even commonly available items, please give us a call, our prices are very competitive. Have the machine number handy to assist us in parts identification.


The pump unit should be lifted from it’s bracket on the side of the draw bar and secured to the P.T.O. shaft either by a quick release ball locking device or a chain and shackle. The leg protruding from the bottom of the pump should bear on the fixed drawbar or another fixed part of the tractor strong enough to withstand the pressure exerted by the torque required to drive the pump. It is best to establish a routine where the pump is the last thing to be connected to the tractor and the first thing to be removed.

The landing leg is intended to support load in a vertical plane only and side loading may cause failure. This can be avoided by chocking both wheels on both sides and loading on level ground only. Always make sure the leg is wound up before towing the machine.

The spinner speed remains constant relative to the speed of the P.T.O. Slowing the tractor P.T.O. rpm can slow the spinners down. Effective average spreading width is 9 metres but can vary. The application rate can be varied by adjustment of the door opening and conveyor speed. The door opening is varied by adjustment of the chain welded to the door-opening arm at the rear of the spreader. The conveyor speed is controlled by adjustment of the hydraulic control valve at the right rear of the spreader. The arm moves in an arc and the knurled screw, which passes through it, locks the setting. The higher the number the higher the conveyor speed. Travel speed also influences the application rate.

Clearance between the spreader draw bar eye and the tractor draw bar clevis should be maintained at 20mm. Greater clearance than this will cause draw bar cracking.

A common mishap is that the setting of the door opening chain is neglected or the ‘D’ shackle may shake free. In this case if an attempt is made to spread material that material will be jammed with some pressure against the rear door, jamming it. This pressure must be relieved by shovelling the material away from the door to the depth of the floor. If an attempt is made to open a jammed door by reconnecting the chain on the door arm the door arm will be destroyed.

If the machine should become bogged or stuck under no circumstance should brute force be employed to remove it. DO NOT tow the machine with multiple tractors or bulldozers etc. The machine should be unloaded, lifted or jacked if necessary and packing etc placed under the wheels so that undue stress to the drawbar and/or axle assembly is avoided.

Calibration Guide

The types of bulk materials these spreaders are designed to apply can vary greatly in the way in which they flow through and are distributed by a spreader, so the following is offered as a guide only. Moisture content will make a significant difference and can vary in different parts of a stockpile. Atmospheric conditions overnight may also change the water content enough to make an adjustment necessary. Over application will waste a valuable resource and could cause environmental damage through nutrient run off. Under application will limit positive results, could cause unnecessary soil compaction and will waste time and fuel.

Safety Warning

Before approaching the spreader to perform adjustments, maintenance or any other operation - Stop the tractor engine, secure the spreader against rolling movement and do not allow any other person access to the tractor or spreader controls. Do no climb or stand on any part of the spreader.

The three ways the operator has of varying the application rate are:-

Travel speed

Conveyor speed

Door opening distance

Generally, the travel speed should be as fast as is consistent with safe and efficient operation. If the material contains no large solid objects and does not bridge or pack up and is not heavy enough to cause undue strain on the conveyor then it is best to leave the conveyor on full speed and close the door down. This will give a more even spread while limiting particle size. Smaller particle size means faster incorporation, fewer flies and less odour.

To check the application rate and spread pattern.

Obtain a tarpaulin 3.162 metres square or fold a larger one that size. (3.162M x 3.162M = 10 square metres). Place it on the ground and travel the spreader past it. Measure the amount of material collected on it and multiply by 100,000. The result will be the application rate per HA. Repeat this procedure with the tarpaulin in different places across the width of the spread and average out the results. This will increase the accuracy of the calibration and also help establish an optimum distance between passes. Spread width can be influenced by P.T.O. rpm so keep this constant. Another way of checking for consistency across the spread pattern is to use a number of shallow dishes such as plastic pot plant bases all of the same dimensions. Place them across the spread pattern and compare the weight of material in each of them. The greater the number of containers and the greater the number of repetitions the greater the accuracy.

Recommendations For Spreading Lime

Lime will move to the door in one mass and become very tightly compacted if the following procedure is not adhered to.

The conveyor speed should be set on number 5 position on the control valve. The door should be open 300mm or more. The desired effect is that the net amount of material reaching the door should be balanced by the amount of material going through so that compaction does not occur.

The above settings are a guide only and slight variations of these settings to suit different consistencies of lime may be experimented with to advantage.

Seed/Trace Element Box (Optional Extra)

Before approaching the spreader to perform adjustments, maintenance or any other operation - Stop the tractor engine, secure the spreader against rolling movement and do not allow any other person access to the tractor or spreader controls. Do no climb or stand on any part of the spreader.

To ensure trouble free operation do not allow hard objects (Rocks, bolts etc) to enter the hopper. Box should be disconnected/removed when not in use. Use blanking devices supplied only. If these are unavailable, holes may be covered with strong adhesive tape.


Ascertain spread width/travel speed – these may vary.

To achieve an even rate of spread, choose travel speed/tractor R.P.M. which can be conveniently maintained.

Simple Calculation: 8 metre wide spread x 125 metre travel = 1,000 square metres –

(1/10 hectare)

Load box with seed etc to be spread. Fashion a collection device to catch seed for weighing – (an old piece of house gutter, ends blocked, suspended close under nozzles would be ideal). Select a trial setting and traverse trial strip at chosen operating speed and R.P.M. Stop and collect seed. Calculate spread rate. Block/unblock nozzles as required, try and maintain an even pattern across.

Remember, changes to conveyor speed setting, tractor R.P.M., travel speed etc. will make re-calibration necessary.

Side Delivery Conveyor Fitting Instructions (Optional Extra)

The spinners are removed by undoing the 12 mm bolts through the bearing housings and spinner motors. DO NOT loosen any of the grub screws in the bearings or flexible couplings. Push the spinner motors forward (towards the bin) one at time beginning with the motor on the longer spinner shaft. Do not remove the hydraulic hoses at this point. The motors can then be lifted up until the flexible couplings disengage. With two people gripping the spinner shaft and disc pull the disc away from the spreader. Lower it carefully being sure not to lose the rubber insert (spider), which goes between the coupling halves. When both spinners have been removed bolt the spinner motors back in place. There are four holes in the underside of the rear of the chassis just in front of the lower bearing mounts for the spinners. The support cradle is then bolted to them. Place the conveyor in the cradle and locate it with a bolt through the appropriate holes. The hose from the door cylinder tee to the spinner motor is removed at the tee and the hoses from the side conveyor motor are joined into the circuit there. The way in which they are joined will dictate the direction of conveyor travel. The preferred direction of travel is to the left as viewed from behind the spreader. The fittings on the hose ends are rotated so as to make this arrangement the most convenient. The one facing up should be joined to the hose leading to the spinner by means of the double-ended nipple supplied. The hose end which faces down should be joined to the tee fitting on the cylinder.


Poultry Litter Users: We advise you to obtain further information on the NSW Department of Primary Industries www.dpi.nsw.gov.au and download a copy of the Departmental Primefact 534 – “Best practice guidelines for using poultry litter on pasture.”                    


We will accept no liability for damage or loss, which in the opinion of Wallaby Fabrication Pty Ltd has been caused by overloading, misuse or overstressing the spreader.

Please feel free to call, e-mail or write for further information.

Warranty will be voided if unauthorised mechanical repairs or modification of the machine has taken place.

If you experience any problems or difficulties in operating this machine please contact Wallaby Fabrication immediately.