Rover 1766 User Manual

Rancher Ride-On

Owners Manual

Model No. 1766

WARNING

•A mower is a high speed cutting tool. Safety precautions must be observed to reduce the risk of accident.

•Careless or improper use may cause serious injury.

•Be sure that you read and fully understand the contents of this Owner’s Manual. Should any point me unclear, contact Rover-Scott Bonnar Limited, in your state or an authorized Rover-Scott Bonnar Service Agent for assistance.

•Keep the owners manual in a safe place for future reference. Read the Owners Manual periodically to, ensure the continued safe and proper use of the mower.

SAFETY INSTRUCTIONS

•A mower user must be in good physical condition and mental health and not under the influence of any drug or alcohol which might impair vision or judgment.

•Do not use a mower when tired or fatigued. Lack of alertness may cause serious injury.

•Know your controls.

Read and understand Owner’s manual before operating mower. Learn how to stop the mower in an emergency. Refer Operator’s Instructions.

•Do not lend or sell the mower without the Owner’s Manual.

•Be sure that anyone using the mower reads and fully understands the information contained in this Manual and knows how to safely operate the mower.

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

•Never mow whilst bystanders or pets are present in the mowing area.

•Never carry passengers.

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

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

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

•Damaged blades and worn bolts are major hazards.

•Replace worn or faulty silencers.

•Always mount and dismount mower from left-hand side (opposite side to discharge chute).

•Make sure the area to be mowed is clear of sticks, stones, bones, wire and debris. They could be thrown by the blades.

•Store fuel in a cool place in a container specifically designed for that purpose. In general, plastic containers are unsuitable. Handle fuel carefully. It is highly flammable.

•Refuel outdoors only. Do not smoke when refueling engine. Add fuel before starting engine. Never remove the cap from the fuel tank or add petrol while the engine is running. Allow engine to cool for several minutes before refueling if engine is hot. If petrol is spilled, do not attempt to start the engine, but move the mower away from the area of the spill and avoid creating any source of ignition until the petrol vapors have dissipated.

•Remove the fuel cap slowly to relieve fuel tank pressure.

•Check for fuel leaks while refueling or using the mower. If a fuel leak is found, do not start or run the engine until the leak is fixed and spilled fuel is wiped away.

•Take care not to get fuel on your clothing. If this occurs, change your clothing immediately.

•Do not operate mower in confined space where exhaust fumes (carbon monoxide) can collect.

•Mow only in good daylight.

•Start the engine carefully with feet well away from the blades.

•When starting do not wrap the started rope around your hand. Do not allow the started cord to snap back. Return the started grip slowly to allow the cord to rewind properly.

•Strictly follow the operator instructions before attempting to start the machine.

•Never mow where the machine could tip or slip.

•If machine stalls going uphill, stop blades and back slowly down.

•Mow up and down slopes. Never mow across a slope. Exercise extreme caution when changing direction on slopes. Do not mow excessively steep slopes.

•Do not accelerate or stop the mower suddenly when on a slope.

•Be extremely careful when using a mower on slopes. Stay alert for holes in the terrain and other hidden hazards.

•Disengage cutter drive before mowing across gravel drives, walks or roads.

•Do not mow in reverse. When reversing keep a careful and continuous observation of the entire area behind the mower.

•Never use the mower unless all guards provided by RoverScott Bonnar Limited are in position.

•Never disconnect the safety switches and never operate the mower if any safety switch is inoperative.

•Never over-speed the engine or alter the governor settings. Excessive speed is dangerous and shortens mower life.

•Take all precautions when leaving the mower unattended. Disengage the cutter drive, set the park brake, shift into neutral, stop the engine, and remove the key.

•Stop the engine and remove the key whenever you leave the mower, even for a moment.

•Stop the engine and disconnect the spark plug lead and inspect mower if:

a)The mower begins to vibrate abnormally: or

b)After striking a foreign object.

Repair the damage before continuing further operation of the mower.

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

•Never pick up or carry a mower while it is operating.

•Where fitted, turn fuel tap off at the conclusion of mowing.

•When transporting in a vehicle, secure the mower to prevent movement, roll-over, fuel spillage, and mower damage.

•Keep all nuts, bolts and screws tight to be sure the equipment is in safe working condition.

•Never modify the mower in any way. Use only replacement parts made and guaranteed by Rover-Scott Bonnar Limited.

•Keep all safety devices (guards and switches) in place and working.

•Keep the engine free of grass, leaves or excessive grease – these can be a fire hazard.

•Store the mower in a well ventilated room away from naked flames such ad may be found in hot water heaters.

SAFETY FEATURES

Traction drive, blade drive and seat safety interlock:

Enclosed engine and muffler:

Enclosed drives:

Full foot rest:

Low centre of gravity stable wide track.

Parking brake.

Convenient – easy to operate controls

1

SPECIFICATIONS

	ROVER RANCHER
	Machine Model No.	1766	To emphasize special information the words
	Engine Model No.	280702	WARNING and CAUTION are used.
			WARNING: The safety of the user and others
	Single Cylinder	Briggs & Stratton
	4 Stroke	12 HP. 465cc	involved.
	Fuel Capacity	4.0 Litres	Personal injury may result should this information
	Oil Capacity	1.42 Litres	be disregarded.
	Lubrication	Gear Impellor	CAUTION: Follow these instructions carefully to
	Spark plug type	Champion CJ8
	Spark Plug Gap	0.7 to 0.8	avoid mower damage and loss of warranty.
	Ignition Type	Magnetron
	Engine Oil	10w-30 or SAE 30

TRANSMISSION

Fully enclosed and permanently lubricated transaxle. Diff and gearbox combined featuring an inline selector pattern with 5 Forward speeds, Neutral and Reverse.

Reduction are –
Speed1	46.8:1	Speed 4	15.7:1
Speed 2	30.1:1	Speed5	13.3:1
Speed 3	20.1:1	Reverse	40.1:1

Primary traction drive is by an A Section, V Belt Clutch from engine to trans-axle input shaft.

Total Drive Reduction
Speed1	104:1	Speed 4	34.8:1
Speed 2	66.6:1	Speed5	29.5:1
Speed 3	44.5:1	Reverse	88.8:
Ground Speed: At 3600 RPM
Speed1	2.5 km/hr	Speed 4	7.5 km/hr
Speed 2	3.9 km/hr	Speed5	8.8 km/hr
Speed 3	5.8 km/hr	Reverse	2.9 km/hr

Note: Speeds must only be selected when machine is stationary.

CUTTING HEAD

Model 178: Full floating die cast aluminum housing with right side discharge. Width of cut 965mm (38”)

Model 170: Full floating pressed steel housing with right side discharge. Width of cut 760mm (30”).

Tyres
Front Tyres –
13 x5.00	Tube
	Pressure 140 KPA maximum
Rear Tyres –	Tubeless
	Pressure 70 KPA maximum

CONTROLS

Throttle control with Fast, Slow and Choke positions;

Key switch with Off, On and Start positions;

Light switch Off/On;

Amp Meter.

STEERING WHEEL

325mm Dia. Steering Wheel. 1-1/4 turns lock to lock.

CLUTCH BRAKE / PEDAL

Foot operated pedal. Right side of machine.

PARK BRAKE KNOB:

Hand operated catch. Right hand side. Used in conjunction with clutch/brake pedal.

SPEED SELECTOR:

Lever left hand side. 5 Forward speeds, Neutral and reverse.

CUTTING HEIGHT:

Lever right hand side. 8 heights of cut positions from 15mm to 65mm.

Cutter drive:

Lever in rear cowl.

GENERAL:
Wheel Base, 111cm	Length	156cm
Track 63cm R: 71cm F.	Width	83cm
Turning Circle 4.0m	Height	95cm
Turning Radius 85.0cm	Weight	180kg

2

FITTING OF MODEL 170-178 CUTTING DECKS TO RANCHER

1.Remove spark plug lead.

2.Move height of cut lever to high cut (3)

3.Slide cutter deck under the Rancher from the right hand side with the ejection chute facing out.

4.Move height of cut lever to low cut.

5.Lift the rear of the cutting deck and fit the support brackets (1) over the control pins (2).

6.Fit the retaining bolts, spacers and washers through the U support bracket (4) in the correct order, see illustration (5).

7.Fit the drive belt (^0 to the engine pulley (7).

8.Attach the tension springs to the cutter head through the holes (8).

A piece of wire through the loops (9) in the spring will assist this operation.

9.Attach cutter head pushrods (10) as shown in illustration. (Pins on outside) Refer page 10, fig 18 for cutter drive adjustment.

10.Attach and adjust cutter head brake rod. (11) Refer page 10, Fig 19 for adjustment.

REFER TO PAGE 11 FOR CUTTERHEAD TILT ADJUSTMENT

3

LOOSE PARTS KIT

DESCRIPTION	QTY	USE
Steering wheel	1	On steering shaft
Roll Pin	1	Secure steering wheel to shaft
Stone Guard Assembly	1	Fitted to cutter head
Spring – Stone Guard	1	On stone guard pivot rod
‘E’ Clip	1	In groove in pivot rod
Ignition keys	2	To start machine
Plug Spanner	1	To remove spark plug

SETTING UP INSTRUCTIONS

Fig.2

INSTALL STEERING WHEEL

1.Slip steering wheel over steering shaft and align the wheel hole with the shaft hole;

2.Insert drift punch – partially through the holes to maintain alignment and insert roll pin in the opposite side; See Fig.2.

3.Drive roll pin in until flush with the outside of the wheel.

Fig.3

FIT STONE GUARD

1.Slip spring onto stone guard pivot rod so that the short leg rests on top on the stone guard;

2.Now twist the spring as shown and fed the end of the pivot rod into the forward pivot bracket; See fig.3

3.Insert the short end of the pivot rod fully into the rearward pivot bracket;

4.Release the spring. It should spring down onto the top of the cutter head and be tensioning the stone guard down;

Fig.4

5.Secure by clipping an ‘E’ Clip into the groove on the pivot rod. See Fig.4.

INSTALLING THE BATTERY

BATTERY

1.Remove battery as follows;

(a)Remove terminal cable from battery

(b)Undo wing nuts and remove clamp bar.

2.The battery is not fitted with Electrolyte. This should be done by adding 33% strength battery acid to each cell until plates are covered. Electrolyte must be purchased from a local battery supply outlet.

IMPORTANT: DO NOT OVERFILL BATTERY. ACID WILL OVERFLOW INTO OTHER PARTS OF THE MACHINE AND SEVERE CORROSSION AND DETERIORATION WILL RESULT.

3.Leave filler caps off and connect battery charger to battery terminal. Charge at the rate indicated in the instructions supplied with the battery.

4.After charging, check that Electrolyte is still covering plates, if not, add to correct level. Install filler caps.

5.Replace battery and secure.

6.Install the positive (red) cable to the positive

(+) terminal and the negative9black) cable to the negative (-) terminal.

4

BEFORE OPERATING

FILL CRANKCASE WITH OIL.

The rider mower may be delivered with out oil in the crankcase. Oil must be added before attempting to start the engine.

1.Place machine on level surface. Open the bonnet. Ensure that the oil plug is securely tightened. Clean around dipstick.

2.Unscrew and remove dipstick from oil filler tube.

3.Insert funnel into filler tube and slowly add oil in accordance with the engine manufacturer’s direction.

Note: Avoid premature engine failure by ensuring the funnel is clean so contaminants are not introduced into the crankcase. Wipe any oil spills so it will not cause dirt to collect on the engine

4.Ensure oil level is at the full mark on the dipstick, when screwed completely in. When finished replace dipstick and retighten.

Note: See Maintenance Instructions

FILL FUEL TANK – See Safety Instructions.

Use only regular grade or unleaded petrol.

Do not mix oil with petrol. – Engine damage may result.

1.Open bonnet and clean around fuel tank cap so foreign matter cannot enter fuel tank when cap is removed.

2.Using a funnel, fill tank with regular grade or unleaded petrol. Replace the cap.

3.Wipe up any petrol that may have spilled.

4.Close and secure bonnet.

CHECK TYRE PRESSURE.

Check and maintain tyre pressure at 140 KPA (20 PSI) front and 70 KPA (10 PSI) rear maximum

ADJUSTING THE SEAT

Tip the seat forward, loosen the seat securing screws. Relocate the seat for operator comfort. Tighten the seat securing screws and lower the seat

Fig 5

CONTROLS

Fig 6

1.Throttle control – Mounted on the dash panel and connected to the engine carburetor controls. Has the symbols for Slow, Fast and Choke.

2.Ignition Switch – This switch is part of the battery ignition system and has three positions marked for Off, On and Start. The switch is key operated and automatically returns to the On position from Start position when released.

3.Light Switch – On/Off toggle switch on dash panel for actuating the headlights. Lights will not function when engine is not running.

4.Amp Meter – Mounted in the dash panel it indicates the battery charging current and discharge.

5.Brake/Clutch – Foot operated pedal on right side of machine. Depressing the pedal disengages the drive belt and engages Brake Disc .

6.Parking Brake – Hand operated knob right hand side. Depressing the brake clutch foot pedal enables this knob to be engaged and disengaged. Brake is locked on with knob in up position.

7.Speed Selector – Located on left of seat. In line selector with speeds 1, 2, 3, 4 and 5 Down from Neutral and Reverse through spring gate and up from Neutral.

8.Cutting Height Adjuster – Located on right of seat with low cut at bottom and high cut at top of setting.

9.Cutter Drive – Lever located on left hand side of seat mounting box. Down position disengages blade drive and applies blade brake, Up position engages blades.

5

OPERATING INSTRUCTIONS

	TO START THE ENGINE:		- Move the throttle lever to the slow position;
	Note the engine will not start unless the cutter drive is		- Turn the ignition key to Off. Remove the keys;
	disengaged, and clutch/brake pedal is depressed.		IMPORTANT:
	-	Depress clutch/brake pedal – Apply the park brake;	- The parking brake should always be applied before
			leaving the machine;
	- Move the speed selector to neutral;
			- The parking brake must be released before attempting to
	-
		Disengage the cutter drive;	drive;
	-	Move the throttle lever to the choke position;	- Depress the clutch/brake pedal when selecting or
	-	Turn the ignition key to the start position and release;	changing speed;
			- Do not select speed while the machine is moving.
	-	when the engine starts;
			ENGAGING CLUTCHES:
	- Move the throttle lever to about ¼ position.
			- When engaging the cutter drive lever or releasing the
	TO MOW OR DRIVE:		clutch/brake pedal, always operate slowly. Do not use a
			jerking motion. Moving these controls too fast could
	-	Depress clutch/brake pedal;	possibly overload and stall the engine.
			CAUTION:
	-	Disengage the parking brake;
			- To avoid loss of control always come to a complete
	-	Select height of cut;
			stop before selecting speeds and slow down when
	-	Move throttle to about ¾ position;	turning.
	-	Engage cutter drive;	REMEMBER:
	-	Select desired speed;	- Always look behind the machine before reversing;
			- Do not refuel when the engine is running or while it is
	-	Slowly release clutch/brake pedal to move off.
			hot;
	TO STOP ENGINE:		- Keep bystanders away – Keep hands and feet clear of
	-	Depress clutch/brake pedal;	moving parts;
			- Keep the machine clear of grass and debris;

- Move the speed selector to neutral;	- Keep all guards in place;

-Disengage the cutter;

-Apply the parking brake;

MAINTENANCE INSTRUCTIONS

Periodically check the machine and cutting mechanism. If parts are worn or need replacing do so by using only Genuine Rover Replacement Parts.

There is a comprehensive Rancher Spare Parts List contained in this book to help you select the right part quickly.

Before working o the mower, disconnect the spark plug lead from the spark plug and place it where it cannot contact the spark plug.

CHECK YOUR Rover rancher frequently for loose nuts, bolts, belts, etc., and keep these items correctly tightened and adjusted.

Note: A check after the first two hours operation is recommended. Engine failure or rapid engine wear mainly result from the following causes –

1.Dirt or abrasives entering the engine via the air cleaner due to –

a). The air cleaner element not being serviced regularly;

b). The air cleaner damaged or dislodged.

2.Dirt or abrasives entering the engine via the oil filler tube due to –

a). Using a funnel not cleaned of dirt and grit,

b). Topping up with contaminated oil. Oil stored in an unclean container.

3.Lack of oil. It is important to –

a). Check the oil level regularly ( every 5 hours of operation),

b). Maintain a full sump.

6

MAINTENANCE INTERVAL CHART

	See	5	25		PERIODIC SERVICE EVERY 25 HOURS
	page	Hours	Hours	50	75	100	125	150	175		200
Change oil (Initial)	7	x
Change oil (Periodic)	7		x
Check Interlock	11	x	x
Check Cutting Blades	-	x	x
Check Cutting Unit Brake	10		x
Check Rear Wheels Brake	10		x
Lubricate Pivot Points	8		x
Lubricate Throttle Cable	8		x
Grease Front Axle Spindles	8		x
Service Air Cleaner	7		x
Check Spark Plug	7		x
Check Drive Belts	-		x
Check Tyre Pressure	5		x
Clean Outside Of Engine	-		x
Clean Cutter Housing	-		x
Paint Chipped Surfaces	-		x

AIR CLEANER: Dual Element Type –

1.Remove two cover knobs and remove air cleaner cover.

2.Remove foam pre-cleaner, if so equipped.

(a). Wash pre-cleaner in liquid detergent and warm water to remove dirt.

(b). Wrap pre-cleaner in cloth and squeeze dry.

(c). Saturate foam in engine oil. Squeeze to remove excess oil.

3.Remove two nuts from top of cartridge.

4.Remove cartridge and clean air cleaner body carefully to prevent dirt from entering carburetor. Brush dirt from lower air cleaner body into duct.

5.Clean cartridge by gently tapping on flat surface.

(a). If very dirty, replace cartridge or wash in low or non sudsing detergent and warm water solution.

(b). Rinse out thoroughly from INSIDE OUT until water is clear.

(c). Cartridge must be allowed to stand and air dry thoroughly before using.

6.Reassemble air cleaner.

Note: Nuts holding air cleaner cartridge must be installed with fiber washers down on cartridge plate to prevent dirt from entering carburetor. Tighten nuts by hand. Over tightening could collapse cartridge.

Note: Petroleum solvents, such as kerosene, are not to be used to clean cartridge. They may cause deterioration of the cartridge. DO NOT OIL CARTRIDGE. DO NOT USE PRESSURIZED AIR TO CLEAN OR DRY THE CARTRIDGE.

OIL CHANGE

See engine manufacturer’s instructions.

1.Place engine on a level surface. Start and run engine for a period to warm the oil;

Fig 8

2.Place an oil pan under oil drain channel in side on chassis.

3.Remove oil drain plug and allow to drain completely.

4.Refit oil drain plug and tighten. Refill sump with new oil. For correct viscosity and service classification see the engine manufactures Instruction

SPARK PLUG:

The spark plug gap gradually increases during engine running and should be checked periodically and whenever the engine malfunctions.

1.Clean around spark plug area so that dirt will not enter engine when plug is removed;

2.Disconnect spark plug lead and remove spark plug;

3.Check condition of electrodes and ensure there is no damage to insulator;

4.Carefully clean the spark plug. Do not grit blast.

5.Set gap to .8mm (.030”)

6.Install in engine and tighten to 20Nm. If a torque wrench is not available hand tighten plug. Then with tube spanner tighten plug about 1/12 of 1 turn.

7.Refit high tension lead. Push onto plug firmly.

7

MAINTENANCE

COOLING SYSTEM:

The Rancher has an air cooled 4 stroke engine. It must be cleaned frequently. Remove any build up of grass, dirt or other debris from the –

1.Cylinder;

2.Cylinder head cooling fins;

3.Cooling air intake screen and

4.Carburettor governor levers and linkages.

This will ensure adequate cooling and correct engine speed.

COOLING SYSTEM:

Proper choke and stop switch operation is dependant on adjustment of remote controls –

1.Loosen outer cable under clamp screw (D) on engine; See Fig. 9.

2.Set throttle control to choke position;

3.Adjust outer cable under clamp plate so that choke is operated;

4.Tighten clamp plate screw and check –

(a). Choke does not operate in fast position, and Stop switch operates correctly.

Fig. 9

CARBURETTOR ADJUSTMENT:

The carburettor has been factory set and should only require occasional fine tuning. See Figs 9 and 10.

1.Close high speed needle valve (A) in bottom of carburettor bowl. Close finger tight in clockwise direction;

2.Open (anti-clockwise) the needle valve two turns (that is an approx. setting);

3.Start engine and let it warm up. Approx two minutes. Cutter drive must be disengaged. Speed selector must be in neutral position, air cleaner must be fitted and secured and fuel tank must be half full.

4.With the engine running at high speed, adjust the needle valve1/8 turn at a time. Clockwise or anticlockwise until engine runs smoothly.

Note: Allow several seconds between each adjustment for engine to adapt to new settings.

Fig. 10

5.Move throttle to the slow position and adjust the slow running stop screw (B) to give an engine speed of 1700 to 1800 RPM.

6.Adjust the idle needle valve (C) slowly in (lean) and out (rich) until engine idles smoothly.

7.Reset engine idle speed.

8.Check operation. Engine should increase speed without hesitation when throttle control is moved quickly from slow to fast. If the engine tends to die out, adjust the high speed needle valve 1/8 turn anti-clockwise until engine accelerates smoothly.

Never tamper with engine governor setting.

Changing of engine governor speed will void engine warranty.

Fig. 11

LUBRICATION GENERAL:

Using General Purpose Grease –

Grease nipples on front wheel pivots. See Fig.11

Front axle beam guides.

Grease nipples on steering pivot blocks Fig.21

Steering gears Fig. 21

Using Clean Engine Oil –

Jockey pivot arms

Throttle control cable fig.9

8

	MAINTENANCE
Cutter Drive Lever Pivot;	WHEEL REMOVAL:

Clutch/brake pedal pivot; See Fig.15

Tie rod ball ends; See Fig. 11

All connecting rod pivot points.

Note: All ball bearings are sealed and require no maintenance.

TRANSAXLE:

This transmission is fully enclosed and permanently lubricated. No maintenance necessary.

CUTTING UNIT:

Remove spark plug lead and disengage cutter drive before working on cutter unit, to prevent accidental starting of the machine.

Before using machine always inspect cutting unit to see that then cutting disc, blades and blade fixings are not worn or damaged.

Always check after striking a solid object. Do not operate machine when unusual vibration occurs.

Replace worn or damaged blades in sets to preserve balance.

Remove any build-up of grass or clogging within the cutting unit or discharge chute or safety flap.

CUTTING UNIT REMOVAL:

Fig. 12

1.Remove drive belt. Run it off of front pulley.

2.Remove tension springs. A loop has been provided on the spring to assist in this operation; See Fig.12.

3.Disconnect cutter deck push rods and blade brake rod.

4.Undo and remove large retaining bolts (A).

5.Slide the cutter head forward this will allow the rear to be lowered to the ground.

6.The cutter head can now be slid out from under the machine.

7.Replace in reverse order.

Fig. 13	Fig. 14
CAUTION:	Always deflate tyre before removing rim
	nuts on front wheel only.

Front –

1.Chock wheels and remove axle nut; See Fig. 13

2.Raise front of engine;

3.Slide wheel from shaft;

4.Replace in reverse order;

5.Retighten axle nut firmly.

Rear-

1.Chock front and rear wheels of machine,

2.Remove four wheel nuts.

3.Slide wheel from hub.

4.Replace wheel nuts and tighten.

ADJUSTMENTS

CLUTCH ROD ADJUSTMENT

Fig. 15

Required to take up transmission belt stretch.

1.Remove (R) clip from pedal pivot. See Fig. 15.

2.Slip rod to rear of machine.

3.Adjust nut on rod so that it is 3mm clear of pivot block when pedal is in a fully up position;

4.Check for operation.

9

MAINTENANCE

BRAKE ROD ADJUSTMENT

Should not normally require resetting.

	Fig. 17
1.	Loosen lock nuts;	2. Adjust pivot block
	(A) See Fig. 17	position;
3.	Retighten nuts.

BRAKE ADJUSTMENT

Required to take up brake pad wear.

1.Loosen lock nut; (B) See Fig. 17.

2.Adjust nut a small amount to take up wear;

3.Retighten lock nut;

4.Check operation.

Do not over-adjust. Set so that park brake knob engages.

PARKING BRAKE

Should always be checked for operation after clutch / brake rods have been adjusted.

CUTTER DRIVE ADJUSTMENT

Fig 18

1.Mover cutter head lever to engaged position and lower deck to low cut.

2.Adjust length of push rods so that cutter head engagement shaft lugs are vertical.

3.Adjust nyloc nuts on engagement lever rod to give approx. 32mm gap between top of lever and end of slot. Fig. 18.

Note:- After adjusting cutter drive check blade brake adjustment.

CUTTER HEAD BRAKE

Should regularly be checked for operation.

PAD REPLACEMENT

1.Remove ‘R’ clip and push rod pin (See Fig. 19).

2.Remove brake rod pivot bolt (B) and two spacers (see Fig. 19).

3.Remove brake plate assembly.

4.Drill out pad retaining rivets.

5.Rivet replacement pad in position.

6.Refit in reverse order.

CUTTER HEAD BRAKE ADJUSTMENT

1.With cutter head disengaged and in low cut position.

2.Adjust nyloc nut on rod till clearance of 5mm is obtained.

3.Adjust tension on spring using lock nuts to give length of 52mm. Fig. 20.

SPRING GEARS

Fig. 21

To adjust out excessive play caused by wear in the gears.

1.Loosen bolts securing steering shaft pivot block (A).

2.Lightly tap pivot block towards layshaft pivot block and retighten bolts (A).

3.Check steering gear engagement. Check that there are no tight spots when turning steering wheel from lock to lock.

10