Laski Predator Operating Instructions Manual
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Laski Predator Operating Instructions Manual

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OPERATING INSTRUCTIONS
STUMP CUTTER
Predátor P56 RX
„Orig. version:"07.2020

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  • Page 1 OPERATING INSTRUCTIONS STUMP CUTTER Predátor P56 RX „Orig. version:"07.2020...

  • Page 2: Foreword

    Foreword Thank you very much that you have just purchased our product, the stump cutter P 50 R Predator. Our company has been engaged in production of equipment for stump cutting, wood residue crushing and disposal for many years and has gained considerable experiences in this field. Quality of our small and also powerful machines is proven in 40 countries of Europe and Asia we export to.

  • Page 3: Table Of Contents

    ................. 31 HECKLIST BEFORE PERATION ..................32 TARTING THE ENGINE PUTTING INTO OPERATION ................. 34 ................... 36 MERGENCY ITUATIONS ..................36 OUTINE AINTENANCE ..............37 AINTENANCE OF ULTI YSTEM LASKI B ........39 AINTENANCE AND EPLACEMENT OF LADES ...................... 45 UBRICATION...
  • Page 4 Predátor P 56RX .................. 46 AINTENANCE OF NGINE ................. 49 AINTENANCE NTERVALS ..............50 AILURES AND ROUBLESHOOTING WARRANTY ......................57 SERVICE REPORT .................... 58...
  • Page 5 Predátor P 56RX...
  • Page 6 Predátor P 56RX...
  • Page 7 Predátor P 56RX Product Identification Our product is identified with its serial number stamped both on the type plate and on the chassis. Upon take-over of the product we recommend you to fill required data in the following form concerning the given product and your dealer. Tab.

  • Page 8: Work Safety Instructions

    Predátor P 56RX Work Safety Instructions Utilisation This product is designed for cutting away a tree stump from above ground level to below ground level with its above-ground part up to +700 mm and its under- ground part up to -400 mm. This machine is rated to climb slopes of up to 11 Range of ambient temperatures allowed: from +30 to -10 Not Allowed Use...
  • Page 9 Predátor P 56RX The stump cutter is allowed to be transported to site either on a trailer or on a low-bed truck. It is not designed to go on public roads. While working, wear always personal protective equipment – forestry safety helmet with visor or goggles, protective gloves, steel toe protection boots and working clothes properly buttoned.
  • Page 10 Predátor P 56RX Do not put any objects or tools on the machine. When handing the machine over to another person make sure if all controls, guards and other safety elements are complete and properly installed. They serve for your safety. Do not use or attempt to start the stump cutter without the cutter guards, engine covers and access covers securely in place.
  • Page 11 Predátor P 56RX While working, particularly while transporting the machine, respect all the applicable instructions in the concerned manual. At public road transport the driver must keep all local regulations valid for public roads. This manual contains also important health and safety information and explains the machine controls.
  • Page 12 Predátor P 56RX ❑ to check up functions of all controls and safety elements before putting the machine into operation, ❑ to avoid disturbing other people with noise, exhaust gases or ejected flying particles (at windy weather), ❑ to protect property, vehicles and people from flying debris and to use sufficient screening accordingly, ❑...

  • Page 13: Residual Risks

    Predátor P 56RX ❑ Use only fuel and service fluids allowed for the engine, its cooling system and hydraulics. Residual Risks FUEL Diesel fuel can be injurious to the skin - wash off as soon as possible. If taken internally seek immediate medical attention.

  • Page 14: Work Safety Symbols

    Predátor P 56RX dust mask if the ground is very dry. NOISE Noise levels of 86,1 dB(A) have been recorded at the working position, i.e. in a distance of 3 m away from the machine in duty as to EN 11201. DUST If the ground is very dry, a large amount of airborne dust might occur.
  • Page 15 Predátor P 56RX Read this Always follow the manual Warning! Keep Warning! Hot parts Warning! Keep Warning! away – ejected away – cutter arm operating while maintaining, servicing of exhaust manifold. Rotating parts – pull-in manual before or repairing the machine and objects hazard.

  • Page 16: Technical Description

    Predátor P 56RX Fig. 6 - Work Safety Symbols Technical Description This machine consists of following main parts: ❖ chassis ❖ engine ❖ cutter arm ❖ control box ❖ hydraulic system ❖ ❖ Chassis This tracked chassis can change its track width. Its travel gear is powered by hydrodrive with continuous regulation.
  • Page 17 Predátor P 56RX ❖ Cutter arm It is intended for swinging of the cutter arm while working. Its suspension itself provides swinging motion against the chassis. The arm, hinged in the suspension, can move up and down and it is controlled by hydraulic cylinders. It is in fact a hinged bearer with the cutting head attached.
  • Page 18 Predátor P 56RX Power output HP/kW 56/42 Number of cylinders three-cylinder, four-cycle engine Bore/stroke 88/102 Displacement 1861 Lubricating pressure at 10020 and idling of 850 rpm Valve play Engine oil MOGUL DIESEL L-SAPS 10W-30, API CJ-4 Oil charge Weight Cooling liquid Cooling fluid G 12 nebo G12++...

  • Page 19: Transport

    Predátor P 56RX Fig. 7 - Basic dimensions of the machine Transport This stump cutter can be transported to site either on a trailer or on a low bed truck. It is not designed for driving on public roads. Rubber tracks are designed only for use on soft terrain, not for hard and abrasive surfaces such as sand, stone, minerals, etc.

  • Page 20: Product Delivery

    Predátor P 56RX - Avoid steering when going up or down the ramps since this can be extremely dangerous. If it is absolutely necessary to steer, first drive the machine back down to the ground and off the ramps or back onto the vehicle / trailer bed and then change the direction of travel and start back up or down the ramp again.

  • Page 21: Precautions In Design

    Predátor P 56RX Cut the binding band carefully. Be aware, the band is tightened up and after cutting its both ends may 'shoot out'. While cutting the band, use protective gloves and goggles. Remove the chocks from tracks. Fill the fuel tank, connect the battery and try to start the engine. Lift up the cutter arm.
  • Page 22 Predátor P 56RX Fig. 8 - Controls on remote control box Main switch of remote control box Cutter arm up / down LED of remote control box Left track forward / back activation Variable track width control Engine STOP switch 10.
  • Page 23 Predátor P 56RX Fig. 9a – Machine controls 1 – battery disconnector, hydraulic oil 4 – flashing light indicator 5 – fuel tank filler neck thermometer 2 – STOP button – emergency stopping 6 – quick-couplers 7 – hydraulic oil filler neck of machine 3 –...
  • Page 24 Predátor P 56RX Obr. 9b – Ovladače na stroji 1 – cutting head switch / external 4 – working lights switch ON/OFF 5 – voltmeter hydraulic circuit control (for 6 – receptacle 12V attachments) 2 – switch for control of chassis/scraper 7 –...

  • Page 25: Noise And Vibrations

    9 – regulation of hydraulic response for cutter arm Noise and Vibrations While in duty, the stump cutter Predator P56 RX brings the following emissions: Engine speed while being measured: 2200 rpm Measurement #1: measured values recorded on the RH side in a distance of 3 m away from the machine in duty (max.

  • Page 26: Use

    Predátor P 56RX Measurement #1: acoustic pressure level A recorded on the RH side in the operator's position: LAeq = 84,0 dB. Measurement #2: acoustic pressure level at max. working speed on the LH side in the operator's position: LAeq = 83,6 dB. Total mean sound power level at max.
  • Page 27 Predátor P 56RX Fuel gauge – close to fuel Red-marked oil dipstick Hydraulic oil gauge tank filler cap with thermometer and oil filler Fig. 11 - State of fluids Caution! Do not open the cooler cap when the machine has just finished working – the coolant is still hot and under pressure.
  • Page 28 Predátor P 56RX At the first start there is much more air in the intake manifold and on this account the engine may not roar to life immediately when turning the switch key for the first time. Do not crank the engine for a longer time than 10 sec.

  • Page 29: Handling And Storage

    Predátor P 56RX Handling and Storage The stump cutter is allowed to be transported to site either on a trailer or on a low-bed truck. It is not designed to go on public roads. As an option you can get a special trailer directly by the machine manufacturer. When loading the cutter on a trailer, fasten retention chains, straps or cables to the machine chassis.
  • Page 30 Predátor P 56RX Store the stump cutter always in dry (sheltered) space to protect it against weather effects.Skladování výrobku provádějte v suchém prostředí, tak aby do výrobku nezatékala voda. Keep the stored machine beyond unauthorised person's reach. Pull the ignition key out and keep it separately.

  • Page 31: Checklist Before Operation

    Predátor P 56RX Avoid contact between sharp concrete edges etc. and the rubber track. Fuels or synthetic oils must never come in contact with the rubber track. If this does happen then they must immediately be cleaned. Avoid using rubber tracks in marine and seaside environments since saline air or salt in general corrode adhesion between rubber and metal inner core.

  • Page 32: Starting The Engine

    Predátor P 56RX The person operating this machine must always wear corresponding PPE, such forestry safety helmet fitted with a visor, full ear protection, steel toe protection boots, heavy duty gloves, close fitting heavy-duty fully protecting clothing. Before starting the battery should be fully charged. Remove the battery and let have it recharged by an authorised person.
  • Page 33 Predátor P 56RX Push the key to activate the remote controller while the ignition key is set in the position 1. Set the ignition key in the position „START“ and start up the engine When the engine roars to life, release the key and let the engine run warm at idling.

  • Page 34: Putting Into Operation

    Predátor P 56RX Indicator lamp „6“ - green – all engine in-service parameters are OK red – error message registered and displayed If the engine turns automatically off just after starting, it may be a symptom of automatic disconnection. Detect the cause and remedy the failure, see also chap.
  • Page 35 Predátor P 56RX Any transport to site or on public roads is allowed only with the engine and cutting head off. This cutter is designed for cutting away a tree stump from above ground level to below ground level with its above-ground part up to +600 mm and its under- ground part up to -380 mm.

  • Page 36: Emergency Situations

    Predátor P 56RX If fuel refilling is required then put the machine out of operation and let the engine chladné nádrže. cool down Never put in if still hot. For filling the tank use always a proper funnel and canisters. If any petrol is spilled or overflowed then wipe off the spots and let them fully evaporate before the next start.

  • Page 37: Maintenance Of Multitip System

    Predátor P 56RX Any servicing or repair is allowed to be done only if the machine was put out of operation. Check up the machine for completeness and its general condition. After every working shift check up tightening of bolted joints, especially rotating parts and completeness of other parts, such as fixation of blades.
  • Page 38 Predátor P 56RX Remove the bolt and tap behind the blade with a small hammer (fig. 15). Avoid hitting tips. Use safety goggles. The leading blades that are furthest from the centre of the head do most of cutting. By changing these as soon as they become blunt, you can re-use them in other non-leading positions.

  • Page 39: Maintenance And Replacement Of Laski Blades

    Fig. 19 – Assembly If the assembly cannot be tightened sufficiently into the head, do not use it. Never this system without all the components being in place and secure. Fig. 20 – Saw blade Multi-Tip Maintenance and Replacement of LASKI Blades...
  • Page 40 Laski blades (fig. 21) and MultiTip blades (fig. 20) is excluded. Be aware that the Laski blades are in pairs as the RH and LH ones. In addition to that they can be straight or bent. As to their...
  • Page 41 Predátor P 56RX When the tracked undercarriage is lifted the rubber track must sag 10-15 mm. When this tension decreases it must be re- tightened to prevent the track from coming off. Do not over tighten it. If you continue to pump grease into the cylinder once the track is already tight, you could compress the cylinder spring and cause excessive...
  • Page 42 Predátor P 56RX Gear oil Avoid using oils with different characteristics and brands. Choice of type of reduction unit oil We recommend, for reduction units, using gear oils with E.P. additives and viscosity class according to ISO VG 150 or SAE 80W/90. When temperature variation ranges are very high we recommend using synthetic oils with E.P.
  • Page 43 Predátor P 56RX The grease contained in the hydraulic track is pressurized. Never loosen grease valve (74) for more than one turn. If the valve is loosened too much you risk expelling grease under pressure and possible serious injury to the machine operator.
  • Page 44 Predátor P 56RX Insert 3 steel tubes in the space between the rollers and the track. Rotate the driving gear in reverse so that the steel tubes proceed with the track and contact the front idler wheel. Exercise force sideways to slide the track and lift it off the front idler wheel. Installing the rubber track Make sure that you are always in safe conditions with the machine lifted before performing this track installation operation.

  • Page 45: Lubrication

    Predátor P 56RX Breakage of metal cores Excess track tension can cause the metal cores to bend or break just like the steel cables as stated above. Other causes may include: improper contact between track and sprocket; rotation of internal rollers; operation on sandy terrain.
  • Page 46 Predátor P 56RX Undercarriage grease points Perform this maintenance procedure every 100 work hours, using lithium grease with EP2 consistency. Clean grease nipples before connecting them to the grease gun. Clean all grease being extruded. Lubrication should be at more frequent intervals if the tracked undercarriage is used in particularly severe operating conditions.
  • Page 47 Predátor P 56RX Při kontrole stavu oleje musí stát motor vodorovně a musí být odstaven Check up the hydraulic oil level. When the stump cutter is on level ground the oil should be between MAX and MIN marks on the oil dipstick “1”...
  • Page 48 Predátor P 56RX Inspection of cooler Cooling air is sucked under pressure by a cooling fan. This cooling air can bring also dirt and various mechanical impurities that stick on the cooler ribbing and may reduce the engine cooling efficiency. - remove mechanical impurities stuck on the ribbing by means of a brush;...
  • Page 49 Predátor P 56RX Fig. 57 – Battery Remote Control Should the battery be fully discharged, it can be replaced by a new one. The battery is accessible under the cover in the bottom of the remote control unit. Wired Emergency Control Should the battery of the remote control unit be fully discharged, it is possible to use a connecting cable that should interconnect the remote control unit and the electronic control box.
  • Page 50 Predátor P 56RX Every 50 hours Check out tightening of bolted joints, especially of guards and completeness of other parts. Check out the rubber tracks for correct tensioning and contingent damage. Check out and adjust, if necessary, blower belt tightness. Clean the cyclone separator.
  • Page 51 Predátor P 56RX Lack of fuel in fuel-injection Use the fuel pump lever by pump hand and pump so long until fuel goes through the return line back into the fuel tank (it is audible). - check entire fuel system - check fuel supply to engine - check fuel pre-filter - check fuel filter...
  • Page 52 Predátor P 56RX Engine Speed regulator lever not Set the lever to START roars to life sufficiently in START but does position not run Fuel filter fouled Change after starter Fuel supply line broken Check and remedy disconnecti Error indication from control - check entire fuel system elements in connection with - check oil level...
  • Page 53 Blades edge regrinding requires high demands for keeping optimal cutting edge shape. While regrinding it is necessary to keep the same weight of particular blades because of balance of their rotating mass. We recommend calling the manufacturer Laski s.r.o. for assistance.
  • Page 54 Predátor P 56RX ELECTRIC CIRCUITRY...
  • Page 55 Predátor P 56RX...
  • Page 56 Predátor P 56RX HYDRAULICS...
  • Page 57 Predátor P 56RX Warranty The manufacturer provides warranty on this product for a period as stated in the enclosed Letter of Indemnity. This warranty period begins upon delivery to the customer. This warranty covers all failures resulted from faulty assembly, manufacture and materials.
  • Page 58 Predátor P 56RX Service Report...
  • Page 59 Predátor P 56RX LASKI, s.r.o. 798 17 SMRŽICE 263 CZECH REPUBLIC tel/fax: 00420582381152 e-mail: info@laski.cz http://www.laski.cz...

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