Spearhead TWIGA CLASSIC S50 Handbook
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Spearhead TWIGA CLASSIC S50 Handbook

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TWIGA CLASSIC S50
TWIGA CLASSIC
S50
8999134
0

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Summary of Contents for Spearhead TWIGA CLASSIC S50

  • Page 1 TWIGA CLASSIC S50 TWIGA CLASSIC 8999134...
  • Page 2 VERIFICATION OF WARRANTY REGISTRATION DEALER WARRANTY INFORMATION & REGISTRATION VERIFICATION It is imperative that the selling dealer registers this machine with Spearhead Machinery Limited before delivery to the end user – failure to do so may affect the validity of the machine warranty.
  • Page 3 TWIGA CLASSIC S50 CAUTION: DO NOT OVER TORQUE HYDRAULIC FITTINGS AND HOSES TORQUE SETTINGS FOR HYDRAULIC FITTINGS HYDRAULIC HOSE ENDS PORT ADAPTORS WITH BONDED SEALS Setting Metric Setting Metric 1/4” 1/4” 18 Nm 19 mm 34 Nm 19 mm 3/8”...

  • Page 4: Table Of Contents

    TWIGA CLASSIC S50 Contents General Information Introduction Specification Safety Safety Recommendation Over Head Power Lines Safety Decal Warning Signs Roadwork Guidelines Training Lighting Kit Lifting Point Tractor Requirements Installing/Removing Machine Attaching Your Machine to The Tractor Running up your Machine...
  • Page 5 TWIGA CLASSIC S50 Service & Maintenance Daily Grease Points Torque Settings Hydraulic Hoses Oil Supply Filtration Maintenance Cables Pin & Bushes Storage Regular Service Chart Diagnostics Pump & Motor Failure Prevention Trouble Shooting...

  • Page 6: Introduction

    TWIGA CLASSIC S50 Introduction The TWIGA S50 is a very robust high capacity reach mower that is easy to operate and maintain. To ensure trouble-free operation this manual should be carefully studied. The term Left and Right hand applies to the machine when coupled to the tractor and viewed from the rear, this also applies to the tractor.

  • Page 7: Specification

    TWIGA CLASSIC S50 Specification FR50 Weight inc. Oil (Kg) 1030 1050 Weight of head (Kg) Min tractor power (Hp) 2500 2500 Min. tractor weight (Kg) Oil tank capacity (ltr) Reach A (m) Reach B (m) Reach C (m) Reach D (m)

  • Page 8: Safety Recommendation

    TWIGA CLASSIC S50 Safety Recommendations Beware of the following Potential Dangers associated with the use of this machine: • Becoming trapped when hitching or unhitching • Tractor overbalancing when arm is extended • Electrocution due to hitting overhead power lines •...
  • Page 9 TWIGA CLASSIC S50 • Follow the manufacturer’s instructions for attachment and removal of machine from the tractor are warning signs to alert others to the type of machine working in the vicinity. Signs should be placed at both ends of the work site and should be in accordance with Department of Transport recommendations.

  • Page 10: Overhead Power Lines

    TWIGA CLASSIC S50 Overhead Power Lines It cannot be stressed enough the dangers involved when working in the vicinity of Overhead Power Lines (OHPLs). Some of our machines are capable of reach in excess of 8 metres (26’); they have the potential to well exceed, by possibly 3 metres (9’...
  • Page 11 TWIGA CLASSIC S50 Definitions of Exclusion Zones Risk Assessment Before starting to work near OHPLs you should always assess the risks. The following points should be observed; Know the risks of contacting OHPLs and the risk of flashover. Find out the maximum height and maximum vertical reach of your machine.

  • Page 12: Safety Decal

    TWIGA CLASSIC S50 Safety Decal Warning Warning Beware of Check all bolts are tight every 8 hours. escaping fluid. Warning Warning Beware of overhead Shut off engine and remove electrical power lines. key before performing maintenance or repair work. Warning Signs You are advised to display clear warning signs to indicate the type of machine when working in public places.

  • Page 13: Training

    TWIGA CLASSIC S50 Training It is the responsibility of the Spearhead dealer to provide instruction on the safe installation, operation and maintenance of the machine in the first instance. Further training is available from Spearhead Machinery Ltd on request, at cost.

  • Page 14: Attaching Your Machine To The Tractor

    TWIGA CLASSIC S50 Attaching Machine to Tractor – 3 Point Linkage 1. Reverse tractor to machine and attach lower links. You will also need to attach the lower stabiliser tubes as they share the same pin. 2. Fit stabiliser bracket into top link clevis and fit top link.
  • Page 15 TWIGA CLASSIC S50 4. Raise machine to required height. Both P.T.O. shafts should be roughly in-line, an upward angle of up to 17° is acceptable to ensure adequate clearance. 5. Adjust the top link so that the machine sits vertically.
  • Page 16 TWIGA CLASSIC S50 7. It is recommended that the controls are mounted in-place of the seat armrest on the side of the cutting head. A pivoting bracket is supplied with every machine, if additional brackets are required contact your local dealer. A 12v/30Amp power supply will be required.
  • Page 17 TWIGA CLASSIC S50 9. Raise leg stands to ensure they don't get damaged. Adjust check chains ensure the machine is secure and cannot swing from side to side. 10. Use only tractors with safety glass. If windows are not laminated safety...

  • Page 18: Running Up Your Machine

    TWIGA CLASSIC S50 Running Up Your Machine 1. First ensure the rotor is in the ‘off’ position and P.T.O. drive is disengaged, and then start the tractor. 2. Engage P.T.O. into gear and run machine up to half revs allowing oil to circulate for about 5 minutes before operating arms.

  • Page 19: Removing From The Tractor

    TWIGA CLASSIC S50 Removing From The Tractor The following steps MUST be followed in exactly the same order in which they appear, with removal of the top link being the last action before driving the tractor away. Do not attempt to operate machine controls through the rear cab window whilst standing on or amongst the linkage.

  • Page 20: Hydraulic Proportional Pro Pilot Controls - 3Sv

    TWIGA CLASSIC S50 Hydraulic Proportional PRO PILOT Control - 3SV Electric Proportional PRO PILOT Control - 3SV Tele Tele LH - Tele Out LH - Tele In RH - Tele In RH - Tele Out Slew Slew LH - Slew Out...

  • Page 21: Pro Pilot Switch Box

    TWIGA CLASSIC S50 PRO PILOT Switch Box Power Indicator Auto Reset Hydraulic Roller Power ON/OFF Hour Meter Rotor Autopilot Reverse Rotor Arm Float Spare Spare The switch box is supplied with a suction pad to allow the box to be mounted to the...

  • Page 22: Cable Controls

    TWIGA CLASSIC S50 Cable Controls Work Head Out/ Lower Float Rotor Forward Neutral Transport Head In Lift Rotor Back...

  • Page 23: Pilot Controls

    TWIGA CLASSIC S50 MULTIPILOT Controls Tele Tele LH - Tele Out LH - Tele In RH - Tele In RH - Tele Out Head Float On Arm Float On Slew Slew LH - Slew In LH - Slew Out RH - Slew Out...

  • Page 24: Operation Warnings

    TWIGA CLASSIC S50 Operational Warnings • Never drive the tractor with arm out stretched (except when cutting). When moving at work always first retract arms. Transport with care. Metal fatigue is always caused by careless transportation and misuse. If the ground is uneven or bumpy slow down.

  • Page 25: Moving Into Transport Position

    TWIGA CLASSIC S50 Moving Into Transport Position Warning Always transport machine with the slew-locking pin fitted and the arms closed in the transport position on the bump stop. Avoid high transport speeds, which will cause unnecessary strain on machine and tractor.

  • Page 26: Operation

    TWIGA CLASSIC S50 Operation Transport to work position • Remove locking pin from slew post. • Turn lift ram isolation tap to on position. • Ensure rotor/motor switch is off. • Engage PTO low revolutions. • Lower main lift ram only, until main arm is vertical.
  • Page 27 TWIGA CLASSIC S50 Reversing Head Drive • Ensure the rotor has stopped spinning or is not blocked; failure to ensure this will cause irreparable damage to hydraulic components. • Change rotor rotation via the button on the PRO PILOT 3SV or rocker switch on the 2SV, which is fitted with a locking gate to prevent accidental movement.

  • Page 28: Oil Cooler

    TWIGA CLASSIC S50 Oil Cooler The optional fitment of an oil cooler prolongs the life of the hydraulic oil and components in hot and arduous conditions. It is important to connect the power lead to the control box directly to the tractor battery.

  • Page 29: Head Float

    TWIGA CLASSIC S50 Head Float Head Float Head Float This option allows the flail head to follow contours of the ground without having to constantly control the angle of the head. The centre of balance is the best mounting point for the head if head float is to be used properly.

  • Page 30: Arm Float

    TWIGA CLASSIC S50 Arm Float Arm Float Arm Float This is only to be used in verge mowing set up, it will reduce weight on the rear roller allowing head to move more easily, following small changes in ground contours in a forward motion, with the aid of a pre-charged gas accumulator.

  • Page 31: Debris Blower

    TWIGA CLASSIC S50 Debris Blower Hydraulically driven fan from tractor external services, please quote tractor oil flow when ordering (maximum 40lt per min). The return oil must go to a free flow connection i.e. filler plug. Avoid quick release couplings.

  • Page 32: Hydraulic Rear Roller

    TWIGA CLASSIC S50 Hydraulic Rear Roller The hydraulic rear roller is controlled by a switch on the control panel. The control of the rear roller is either raised or lowered, there is no in-between height control. Height is set as above for either hedge or grass cutting...

  • Page 33: Autopilot

    (see right). Ensure you fully understand the operation of the Spearhead Autopilot, which will reduce machine and operator fatigue and improve hourly output, machine life, standard of work and comfort to the operator.
  • Page 34 TWIGA CLASSIC S50 Set-Up: Correct Position Of Micro Switches Bolt “A” Screw “B” Fig. 2 1. Place rear roller on the ground 2. Ensure the locking pins (fig.1) are installed into the Auto-pilot with the arm fully lowered 3. Engine turned off, key removed, and PTO disengaged.
  • Page 35 TWIGA CLASSIC S50 Summary You must ensure that the micro switches make and break a circuit as the cams rotate through their arc of travel. It is very important to correctly set the micro switches to ensure the electrical circuit functions, the switch lever arm must follow...
  • Page 36 TWIGA CLASSIC S50 Auto Pilot Switch Alignment Bend lever arm of switch to align with the middle of each cam, ensure they don’t overlap onto the adjacent cam. Alternative Settings Move the cams apart to increase amount of weight carried on the...
  • Page 37 The operator will control reach whenever necessary. The Spearhead Autopilot will assist you with grass mowing. It does not relieve you of your responsibility to drive with care and understanding for the machine.

  • Page 38: Quad Saw

    TWIGA CLASSIC S50 Quad Saw • Never operate the machine with other people present, as it is possible for debris to be thrown from the saw blades in all directions. • Always ensure all cab safety guards are in place and all tractor windows are closed.
  • Page 39 Beware! The tension has now changed to 550N for the short and 650N for the long belts. Contact the Spearhead Service department if you have any questions. Mounting the Quad Saw The blades must be mounted in a downward cut rotation. Always use the blades vertically positioned in relation to the direction of travel.
  • Page 40 TWIGA CLASSIC S50 Quad Saw Operating Instructions It is recommended to travel forward slowly when starting work in order to maintain the correct speed of the blades. Adjust the angle of the saw to present the branches approx 90° to the blades. Always ensure the blades are vertical to allow cut branches to fall away.

  • Page 41: Cutter Bar

    TWIGA CLASSIC S50 Cutter Bar Description The optional 1.5m cutter bar is a robust construction of double fingers and reciprocating knife, suitable for cutting shrubs and hedges of a woody material up to 30mm diameter. Operation Run the PTO at low speed 150/200 rpm only; normal 540 R.P.M. will cause unnecessary wear and vibration, which may lead to premature failure.

  • Page 42: Forward Reach

    TWIGA CLASSIC S50 Forward Reach (FR) Description This useful feature provides extra visibility particularly when topping a hedge, or verge mowing. Operating the Forward Reach Before operating the arm, ensure the head is one metre off the ground and at least two metres away from the tractor.

  • Page 43: Service & Maintenance

    TWIGA CLASSIC S50 Service and Maintenance Daily grease points TWIGA machine Optional - Quad saw Head Rotor & Roller Optional - Autopilot Grease 1.2m head every 8 hours (5-10 pumps)

  • Page 44: Torque Settings

    TWIGA CLASSIC S50 Washing Your Machine Grease all your machine and optional parts after each time you wash your machine. Gearbox Before first use check gearbox oil level, thereafter check every 8 hours. After the first 50 hours drain and replace the gearbox oil, thereafter annually.

  • Page 45: Hydraulic Hoses

    • Hoses with damaged metal braid should be replaced. • When replacing hoses quote number stamped on fitting at one end. The Spearhead hydraulic system works at very high pressure, when replacing hoses use only genuine hoses, a burst hose could be very dangerous.

  • Page 46: Oil Supply

    TWIGA CLASSIC S50 Oil Supply • Daily before starting up check oil level in tank reservoir. • It is a good practice to constantly keep an eye on the tank level gauge, (this can be seen from the tractor seat) as a pipe burst could empty the tank within minutes.

  • Page 47: Cables

    TWIGA CLASSIC S50 Pins & Bushes All main pivot points are furnished with replaceable bushes. If there are any signs of wear, these must be replaced. All bushes are available from Spearhead Parts Department. Warning Do not use grease containing Molybdenum disulphide on nylon bushes and wear pads.

  • Page 48: Regular Service Chart

    TWIGA CLASSIC S50 Regular Services Chart Service Hours Service points 1-4 hrs Bolts are fully tightened Condition of flails Condition of hoses especially for chafing Flail bolts are fully tightened Flail head retaining bolts are fully tightened Gearbox seals (If oil is leaking replace immediately)
  • Page 49 TWIGA CLASSIC S50 • Never cause severe sudden movements to arms. Pressure will peak and will transmit back to pump, resulting in failure.

  • Page 50: Trouble Shooting

    TWIGA CLASSIC S50 Trouble Shooting Problem Cause Solution Gearbox overheating Oil level incorrect Check oil level Oil grade incorrect Check oil grade Implement overloaded Reduce forward speed Wrong PTO speed Ensure tractor PTO speed matches implement Excessive belt wear Belt and pulley condition...
  • Page 51 TWIGA CLASSIC S50 Trouble Shooting Problem Cause Solution Irregular arm movement Spool contacting with housing Check spool is free moving Broken spring in spool valve Check spring Failed ram seals Repair ram Electrically operated Faulty wiring Check wiring and switches...
  • Page 52 TWIGA CLASSIC S50...
  • Page 53 TWIGA CLASSIC S50 Spearhead Machinery Ltd Green View Salford Priors Evesham Worcestershire WR11 8SW Tel: 01789 491860 Fax: 01789 778683 www.spearheadmachinery.com enquiries@spearheadmachinery.com Spearhead Machinery Ltd Green View Salford Priors Evesham Worcestershire WR11 8SW Tel: 01789 491860 Fax: 01789 778683 www.spearheadmachinery.com...

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