Rover 302T3 User Manual

2.18 Mb





Model No: 302T3


Never mow while barefoot or wearing open sandals or thongs. Wear long trousers and heavy shoes

Know your controls. Read the owner’s manual carefully. Learn how to stop the engine quickly in any emergency

Make sure the lawn is clear of sticks, stones, bones, wire and debris. They could be thrown by the blade

Stop the engine and disconnect the spark plug wire before clearing blockages, checking, or working on the mower.

Before using, always inspect to see that blades, blade bolts and cutter assembly are not worn or damaged. Replace worn or damaged blade to preserve balance.


Check all nuts, bolts and screws often; always be sure the mower is in a safe operating condition. Use only genuine replacement parts.

Refuel outdoors only. Do not smoke while fuelling engine. Add fuel before starting the engine. Never remove the cap off the fuel tank or add petrol while the engine is running or the engine is hot. If petrol is spilled, do not attempt to start the engine but move the machine away from the area of the spill and avoid creating any source of ignition until petrol vapours have dissipated.

Do not mow whilst people, especially children or pets are in the mowing area.

Replace worn or faulty silencers (muffler)

Mow only in good daylight.

Never use the mower unless the grass catcher or guards (rear flap) provided by the manufacturer are in position.

Start the engine carefully with feet well away from the blade.

Do not operate the engine in a confined space where exhaust fumes (carbon monoxide) can collect.

Stop the engine whenever you leave the mower, even for a moment.

Do not allow children or people unfamiliar with these instructions to use the mower.

Store the mower in a well-ventilatedroom away from naked flames such as may be found in hot water heaters.

Do not over-speedthe engine or alter governor settings. Excessive speed is dangerous and shortens the mower life.

It is advisable to wear suitable eye protection when operating a mower.

Turn the fuel off at the conclusion of mowing and reduce the throttle setting during engine


Store fuel in a cool place in a container specifically designed for the purpose. In general, plastic containers are unsuitable.

Stop the engine, disconnect the spark plug wire and inspect the mower if :

a)the mower begins to vibrate abnormally; or

b)after striking a foreign object.

Never cut grass while walking backwards.

Stop the engine before pushing the mower across gravel drives, walks or roads.

Walk, never run.

Mow across the face of slopes, never up and down. Exercise extreme caution when changing direction on slopes. Do not mow excessively steep slopes.

Never pick up or carry a mower when it is operating.


To avoid engine damage drain the oil and fuel from the engine before turning the lawnmower over in any direction.



Congratulations on your purchase of a Scott Bonnar domestic rotary lawnmower.

This manual covers the setting up, operation and maintenance of the Scott Bonnar domestic rotary lawnmower. Please read and understand this owner’s manual before using the mower. If any point is unclear, contact Scott Bonnar or anyScott Bonnar authorized service dealer or agent.

To emphasise special information the following WARNING and CAUTION highlights are used.


The safety of the user and others involved. Personal injury may result should this information be disregarded.


Follow these instructions to avoid mower damage and possible loss of warranty.



Safety instructions




Setting up



5 & 6


6 & 7

Warranty conditions




Scott Bonnar domestic rotary lawnmower


Scott Bonnar owner’s manual


Engine manufacturer owner’s manual


Grass catcher top half c/w mesh & handle


Grass catcher bottom half


If when unpacking your new lawnmower it is found that there are items missing contact your nearest authorized Scott Bonnar service dealer or agent.



After removing the lawnmower from the carton remove any loose packaging between the mower base and handle bars used for transport.

Handle bar assembly- refer figure 1

Lift the upper handle bars off the mower and swing over to align with the lower handle bars.

Hand tighten the two black knobs to hold the upper handle bars in position

To fold the handle bars for storage loosen the two black knobs and fold the handle bars forward. Taking care not to damage the throttle control cable.

Upper handle bars

Handle bar knob

Lower handle bars

Figure 1. Handle bar assembly

Grass catcher assembly- refer figure 2

Position the catcher top over the catcher bottom

Align all the barbs on the catcher top with the slots in the catcher bottom

Press firmly down on the catcher top to lock the barbs in to the slots

Figure 2. Grass catcher assembly

Engine oil- Refer to the engine manufacturer owner’s manual

The engine fitted to the Scott Bonnar lawnmower is shipped with no oil in the sump.

Oil must be added before attempting to start the engine otherwise damage to the engine will occur.

Engine fuel-Referto the engine manufacturer owner’s manual

Use only fresh unleaded petrol in the lawnmower engine.



Installing the grass catcher

Raise the rear flap of the mower with one hand and with the other hand grasp the grass catcher by the top handle, and insert into the rear opening. Positioning it against the rear of the mower.

Lower the rear flap so that the back edge of the flap hooks over the lip of the grass catcher.

Removing the grass catcher

Raise the rear flap of the mower with one hand and with the other hand lift the grass catcher up and away from the rear of the mower.

Lower the rear flap against the rear of the mower.


The grass catcher should only be fitted or removed when the engine is stopped. Never raise the rear flap when the engine is running

Adjusting the height of cut- refer figure 4

The Scott Bonnar lawnmower has nine height settings controlled by the height adjustment lever located at the rear right hand wheel.

Grasp the height adjustment lever and pull the lever away from the base to disengage the lever from the base.

Move the lever either forwards or backwards to the desired position and release the lever so as to engage in the base.

Height adjustment lever

Figure 3. height adjustment lever


Starting the engine

Refer to the engine manufacturer owner’s manual for detailed starting procedure.

Ensure that the engine oil is at the correct level and that the fuel tank is full of fresh unleaded petrol.

Move the throttle control lever to the “FAST” position.

Prime the engine in accordance with the engine manufacture’s instructions

Grasp the starter cord handle and pull with a quick firm action. Allow the starter cord to recoil back into its housing whilst retaining a grip on the handle. If the engine fails to start repeat till the engine starts

Stopping the engine

Move the throttle control lever to the “STOP” position O

Wait till the engine comes to a complete stop before removing or fitting the grass catcher to the mower or attempting any maintenance work on the mower.



Before carrying out any maintenance on the mower remove the spark plug lead from the spark plug to prevent accidental starting

Engine air cleaner

Refer to the engine manufacturer owner’s manual for detailed maintenance instructions.

The engine air cleaner elements must be serviced after every 25 hours of normal mowing. The elements must be serviced more regularly if the mower is used in dusty conditions. Replace immediately if the element is damaged.

Spark plug

Refer to the engine manufacturer owner’s manual for detailed maintenance instructions.

For best results, remove the spark plug every 50 hours for gap checking and replace every 100 hours of use. Replace the spark plug at any time if it is found that the electrodes are pitted or burned or the porcelain cracked. For replacement refer to engine manufacturer owner’s manual for correct spark plug.


Check the condition of the muffler periodically for rust and cracks. Replace if found to be damaged as this can lead to increased exhaust noise. Replace only with a genuine original equipment part.

Blade- refer figure 4

Check the condition of the blades and central fastener at regular intervals, or after striking a solid object, or if the mower begins to vibrate abnormally. The blades with use, will loose their sharp edge and the quality of the grass finish will deteriorate. When this happens the blades should be replaced in sets.


Blades must be replaced in sets to maintain balance


Blade removal- refer figure 4

Remove the spark plug lead from the spark plug

Set the mower to the high cut position

Lift the rear flap and prop open to give access to the blades.

Remove the blade retaining nuts, bolts, blades, washers and discard.

Blade fitting- refer figure 4

Remove the spark lead from the spark plug

Set the mower to the high cut position

Lift the rear flap and prop open to give access to the blades.

Fit the new blades, blade bolts, washers and nuts in sets to maintain balance. Refer to figure 5 for correct order.

Tighten the blade nuts to 16 Nm. Check that the blades are free to move when the blade nut is tightened

Remove the flap prop and replace the spark plug lead

Figure 4. Blade change

Nyloc nut

Backing plate

Tension washer



Blade bolt

Figure 5. Blade fasteners


To prevent the build up of grass under the deck and to maintain the appearance of the mower it should be cleaned at the end of each days mowing.

Stop the engine and remove the spark plug lead when the blade has stopped

Remove the grass catcher and tilt the mower back on it’s handle bars

Hose the underside of the mower housing to remove all grass build up

Lower the mower to the ground and fit the spark plug lead to the spark plug

Hose the grass catcher inside and out to remove all grass debris and hang up to dry before storage


Do not hose the engine as water can damage the air cleaner and ignition system


Warranty Conditions

Australia & New Zealand Only

Rover Mowers Limited warrant that this machine is free from defects in material and workmanship. This warranty is limited to making good or replacing any part which appears upon inspection by the manufacturer or his agent to be defective in material or workmanship.

The engine used to power this machine is warranted by the manufacturer whose warranty statement has been included with the machine. As the warranty for the engine may differ from the warranty for the other components, you are advised to read the engine manufacturer’s

warranty carefully.

For other items this warranty shall apply for a period of 12 months from date of purchase for domestic use only. However these items are not warranted for commercial or industrial use.

This warranty does not obligate the manufacturer, his agents or dealers to bear the transport costs incurred in the repair or replacement of any defective part. This warranty excludes fair wear and tear, or any damage caused by misuse or abuse. Parts such as blades, blade bolts, v-beltsand spark plugs, which can be subjected to use beyond their normal intended working capacity are also excluded.

This warranty is void if parts other than genuine have been used or if repairs or alterations have been made without the manufacturer’s written authority. The above warranty does not exclude any condition or warranty implied by the Trade Practices Act 1974 or any other relevant

legislation which implies any condition which cannot be excluded.



Rover Mowers Limited reserves the right to make changes and add improvements to its product at any time without notice or obligation. The Company also reserves the right to discontinue manufacture of any product at its discretion at any time.

For your Record:


Retailers Name: .............................................

Address: ..................................................................

Phone No: ......................................................

Model No: ..............................................................

Serial No: .......................................................

Date of Purchase: ....................................................




A.B.N. 11 000 257 303

Rover Mowers Limited, PO. Box 1235, Eagle Farm. Qld. Australia. 4009


Phone: 07 3213 0233


PO. Box 58-774,Greenmount, Auckland. New Zealand.


Phone: 09 274 7400


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