Husqvarna PT 26D Operator's Manual
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Husqvarna PT 26D Operator's Manual

Husqvarna PT 26D Operator's Manual

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  • Page 1 PT 26D Operator´s manual English...

  • Page 2: Table Of Contents

    Contents Chapter 1:Introduction ..........3 28. Throttle control ..........45 29. High speed ............45 Congratulations ............3 30. Weight transfer ..........46 Driving and Transport on Public Roads ....3 31. Rotating warning light (traffic kit option) ...46 Towing ..............3 32. Parking lights (traffic kit option) ......47 Use ................
  • Page 3 Contents Servicing the air filter ..........84 Chapter 11:Hydraulic System ........138 Cleaning the cyclone filter ........84 Chapter 12:Fuel system ...........141 Replacing the air filter ..........85 Technical Data............143 Bleeding the fuel system ........86 Servicing the fuel filter ..........87 Design standards ............149 Checking the Tyre Pressures .........88 Servicing the battery ..........89 Fuses ..............90 Checking the Safety System ........92...

  • Page 4: Chapter 1:Introduction

    Chapter 1: Introduction Congratulations Thank you for purchasing a Husqvarna PT 26D. Husqvarna PTs have been designed according to a unique concept with a front mounted cutting unit and Husqvarna's unique rear wheel steering. The machine is built to give maximum efficiency even in small and difficult areas.

  • Page 5: Use

    Introduction This machine is designed to mow grass on ordinary lawns and other open and level ground surfaces without obstacles such as stones, stumps and the like. All other types of use are incorrect. The manufacturer’s instructions with regard to driving, maintenance and repair must be followed precisely, even when the machine is equipped with special accessories supplied by the manufacturer for which operating instructions accompany the delivery.

  • Page 6: Proper Service

    Introduction Proper Service Husqvarna’s products are sold all over the world and only by specialised retail traders offering complete service. This ensures that you as a customer receive only the best support and service. Before the product is delivered, the machine has, for example, been inspected and adjusted by your dealer, see the certificate in the Service Journal.

  • Page 7: Serial Number

    Introduction Serial Number The serial number can be found on the printed plate attached on the right-hand side under the seat. The plate includes the following information: • The machine’s type designation. • Weight. • The manufacturer's type number. • The machine’s serial number.

  • Page 8: Chapter 2:Symbols And Decals

    Symbols and Decals Chapter 2: Symbols and Decals These symbols are found on the machine and in the operator’s manual. Symbols for control units and warning lamps are displayed in chapter “Presentation”, see page 42 and following pages. Study them carefully so you understand their significance. Read the Warning Use hearing...
  • Page 9 Symbols and Decals Do not insert your hands Never carry or feet under Only for passengers the cover Warning! attached on the when the Rotating cutting unit machine Read the engine is Parking brake blades running or on its tools. Operator's manual Differential lock Pedal forwards...
  • Page 10 Symbols and Decals WARNING: Xxxxxx x xxxx xxxxx xxxxx xxxxx Xxxxxxxxxxx xxx xxxxxx. Xxxx xxxxxxx xxx xx xxxx Used in this publication to notify the reader of a risk of serious personal injury , particularly if the reader should neglect to follow instructions given in the manual.

  • Page 11: Important Information

    Symbols and Decals IMPORTANT INFORMATION: Xxx xxx xxxx xxxxxxxxx xxx xxxxx xxx xxxx xx xxxxx xx xxxxx. Xxx xxxxxxxx xx x x xxxxxxx xx xxxx xxxx. Used in this publication to notify the reader of a risk of material damage , particularly if the reader should neglect to follow instructions given in the manual.

  • Page 12: Chapter 3:Safety Instructions

    If you get into a situation where you feel unsure Read the operator’s manual before starting the machine about how to progress, stop and seek expert advice. Contact your Husqvarna retailer, service agent or an experienced user. Avoid all usage that you consider to be beyond your capability.
  • Page 13 Safety Instructions • Clear the area of objects such as stones, toys, steel wire, etc. that may become caught in the blades and thrown out. • Beware of the rear ejector and do not point it at any one. • Stop the engine and prevent it from starting before you clean the cutting unit.
  • Page 14 Safety Instructions • Shut down the blades when not mowing. The blades must only be running when the cutting unit is lowered and active when used for mowing. • Be careful when rounding fixed objects, so that the blades do not hit them. Never run the machine over foreign objects.
  • Page 15 Safety Instructions WARNING: Engine exhaust, some of its constituents and certain vehicle components contain or emit chemicals considered to cause cancer, birth defects or other reproductive impairment. The engine emits carbon monoxide, which is a colourless, poisonous gas. Do not use the machine in enclosed spaces. •...
  • Page 16 Safety Instructions • Never leave the machine unsupervised with the motor running. Always stop the blades, apply the parking brake, stop the engine and remove the keys before leaving the machine. • Never allow children or other persons not trained in the use of the machine to use or service it.

  • Page 17: Driving On Slopes

    Safety Instructions • Never use the machine when barefoot. Always wear protective shoes or protective boots, preferably with steel toes. • Make sure that you have first aid equipment close at hand when using the machine. Driving on slopes Driving on slopes is one of the operations where the risk of the driver losing control of the machine or of it overturning is the greatest;...
  • Page 18 Safety Instructions • The differential lock should also be used on slopes. • Never drive the machine on terrain that slopes more than 10°. • Avoid starting or stopping on a slope. If the tyres start to slip, stop the blades and drive slowly down the slope.

  • Page 19: Children

    Safety Instructions • Try not to stabilise the machine by putting a foot on the ground. • When cleaning under the machine, it may never be driven near verges or ditches. Children • Serious accidents may occur if you fail to be on guard for children in the vicinity of the machine.

  • Page 20: Maintenance

    Safety Instructions Maintenance • Stop the engine. Remove the ignition key before making any adjustments or carrying out maintenance. • Never fill the fuel tank indoors. • Only store fuel in clean containers approved for the purpose. • Never remove the fuel cap or fill the fuel tank with fuel while the engine is running.
  • Page 21 Safety Instructions • Do not remove the filler cap or any other component on the cooling system when the engine is hot or under pressure, as hazardous hot coolant can spray out. WARNING: The engine, exhaust system, cooling system and hydraulic system components become extremely hot during operation.
  • Page 22 Safety Instructions • Avoid overfilling. In the event of spilling fuel on the machine, wipe it up before starting the engine. If you spill petrol on your clothing, change your clothing. • Material that has been contaminated by fuel must be moved to a fire proof and environmentally safe place.
  • Page 23 Safety Instructions IMPORTANT INFORMATION: Avoid sparking and its consequences by: Wearing protective glasses. Make sure that the fuel cap is fitted and that no flammable liquids are stored in an open container. Do not work on the starter motor circuit in the vicinity of spilt fuel.
  • Page 24 Safety Instructions • Acid in the eyes can cause blindness, contact a doctor immediately. • Be careful when servicing the battery. Explosive gases form in the battery. Never perform maintenance on the battery while smoking or in the vicinity of open flames or sparks. This can cause the battery to explode and cause serious injuries.
  • Page 25 Safety Instructions • The machine is tested and approved only with the equipment originally provided or recommended by the manufacturer. • The blades are sharp and can cause cuts and gashes. Wrap the blades or wear protective gloves when handling them. •...

  • Page 26: Transport

    Activate the parking brake and secure the machine using approved fasteners, such as straps, chains or ropes when transporting. • Check and comply with laws and regulations when driving on public roads, a traffic kit is available as an option. This can be retrofitted on PT 26D.

  • Page 27: Environment Protection

    Safety Instructions Environment protection Take care of the environment, there are numerous environmental risks especially when performing maintenance on the machine. This particularly applies when dealing with engine oil, hydraulic oil, fuel, oil filters, hydraulic filters and fuel filters. You must be attentive to ensure spillage does not occur when you open a system that contains oil or fuel.
  • Page 28 Safety Instructions • Replaced oil and fuel filters are environmental hazardous waste, handle them as waste oil. • Do not spill fuel when refuelling. One litre of diesel fuel can, according to the Swedish Rescue Services Agency, destroy up to one million litres of drinking water.

  • Page 29: User Responsibility

    Safety Instructions User responsibility • Study and follow the safety instructions, see “Safety Instructions” on page 11. • Follow the maintenance schedule for care, see “Maintenance Schedule” on page 71, lubrication chart, see “Lubrication Schedule” on page 111 and the instructions for operating the machine, see “Presentation”...

  • Page 30: Chapter 4:Presentation

    Husqvarna PT 26D. It is fitted with a Perkins 3 cylinder diesel engine developing 26 horse power. PT 26D is equipped with hydraulic steering and attachment lift. They are supplied with pressure from a pump on the engine. PT 26D The machine is all wheel drive in low speed mode.
  • Page 31 Presentation The machine is equipped with an electro-hydraulic differential lock, which is controlled by a pedal. The differential lock only works longitudinally, which means that you can turn the machine with the differential lock activated. The differential lock does not work in high speed. Rear light, horn, direction indicators and rotating warning lights are optional equipment (traffic kit).
  • Page 32 Presentation Placement of controls Speed control for driving forwards page 34 Knob for seat suspension page 36 Speed control for reversing page 34 10. Steering wheel console page 33 Parking brake page 35 11. Pedal for differential lock page 38 Control panel page 32 12.
  • Page 33 Presentation Control panel 21. Control lever hydraulics page 40 30. Switch for weight transfer page 46 22. Switch for operating the cutting unit page 42 31. Rotating warning light (option) page 46 23. Switch for 2nd hydraulic function (option) page 42 32.
  • Page 34 Presentation Steering wheel console 40. Warning lamp Battery charging page 48 47. Warning lamp High speed page 48 41. Warning lamp Differential lock page 48 48. Warning lamp Right-hand indicator page 48 42. Warning lamp Coolant temperature page 48 49. Lever for tilting the steering wheel console page 49 43.

  • Page 35: Speed Control

    Presentation 1-2. Speed control The speed of the machine is variably controlled using two pedals. Pedal (1) is used to travel forwards and pedal (2) to reverse. WARNING: Make sure that no branches can interfere with the pedals when mowing under bushes. Speed control...

  • Page 36: Parking Brake

    Presentation 3. Parking brake Apply the parking brake by moving the handle forward. Release the parking brake by moving the handle back. 4. Control panel There are controls and switches on the control panel on the right-hand side of the driver that are used when operating the machine.
  • Page 37 Presentation WARNING: Do not adjust the seat whilst driving. Risk of unsafe operation. Lateral adjustment and adjusting suspension The seat can also be adjusted lengthways: • When making adjustments, the lever (8) under the left-hand side of the seat is moved to the left, after which the seat can be moved backwards or forwards to the desired position.

  • Page 38: Steering Wheel And Steering Wheel Console

    Presentation • Lumbar support is adjusted using a knob (7) on the left-hand side of the backrest. 10. Steering wheel and steering wheel console Knob for the lumbar support The position of the steering wheel can be adjusted vertically. The mounting for the steering unit in the steering column can be adjusted vertically.

  • Page 39: Differential Lock

    Presentation 11. Differential Lock The differential lock is electro-hydraulic. It is operated by a pedal controlled switch. The differential lock only works longitudinally, it ensures operation on at least one front wheel and one rear wheel. This means that you can turn the machine with engaged differential lock without causing any interruptions in the power transmission or damage to the lawn.

  • Page 40: Fuelling

    Presentation 13. Fuelling The fuel level in the tank is indicated in the sight glass. Do not fill the tank completely, leave an area of at least 2.5 cm (1"). Fill the fuel tank with diesel. Do not use petrol under any circumstances.

  • Page 41: Controls On The Control Panel

    0 °C (+32 °F). 21-37. Controls on the control panel The control panel is prepared for optional extras, which are sold as accessories for PT 26D. Therefore, some of the following control units may not be included with your machine.
  • Page 42 Presentation Pull the lever backward to engage the transport position. The unit is then raised. The cutting unit can be raised slightly with the blades in operation. This is to facilitate work when cutting in extremely tall grass or on uneven surfaces. The machine is, however, equipped with an automatic blade stop function, which is activated when the cutting unit reaches the transport position.

  • Page 43: Switch For Operation Of Cutting Unit

    Presentation 22. Switch for operation of cutting unit The cutting unit can only be started when the driver is sitting in the seat. • Pull out the switch to engage cutting unit operation. • Press in the switch to disengage cutting unit operation.

  • Page 44: Push Button For Horn (Traffic Kit Option)

    Presentation 24. Push button for horn (traffic kit option) Switch for horn 25. Indicators (traffic kit option) Press for the left-hand or right-hand indicator. Blinkers are switched off automatically after approximately 30 seconds or manually by pressing in the same direction.

  • Page 45: Starter Switch

    Presentation 26. Starter switch Three positions: • All functions switched off. The engine is stopped. The parking light can be switched on (traffic kit option). • Normal operating position. • Start and Preheating Keep the switch in the glow plug mode, when glow plug heating is complete the starter is engaged.

  • Page 46: Throttle Control

    Presentation 28. Throttle control The accelerator is used to control the speed of the engine and thereby also the rotation speed of the blades. In order to increase or decrease the engine speed, the control is moved forwards or backwards respectively. Throttle control 29.

  • Page 47: Weight Transfer

    Presentation 30. Weight transfer Weight transfer is activated using this switch, transfers a proportion of the unit’s weight to the machine. This causes greater ground pressure on the machine’s front wheels and lower ground pressure on the unit’s pivot wheels. It is recommended to use weight transfer when lawn mowing and sweeping.

  • Page 48: Parking Lights (Traffic Kit Option)

    Presentation 32. Parking lights (traffic kit option) Can be lit using the switch even if the ignition switch is not switched on. The battery will be completely drained in approximately 20 hours. The parking light is lit automatically when the engine is running, even if the switch is not switched on.

  • Page 49: Chronometer

    Presentation Chronometer The chronometer shows how many hours the engine has been running. Any time when the engine is not running but the ignition is switched on is not registered. The last digit shows tenths of an hour (6 minutes). 40-51.

  • Page 50: Lever For Steering Wheel Console Angle

    Presentation 49. Lever for steering wheel console angle When the lever is activated, the angle of the steering wheel console can be adjusted for a more comfortable driving position or to facilitate entering the driver’s seat. The lever is sprung. WARNING: Adjusting the steering wheel console angle and steering wheel...

  • Page 51: Cooling System

    Presentation Cooling system IMPORTANT INFORMATION: Coolant must be a mixture of 50 % antifreeze fluid and 50 % soft water. Anticorrosion agent in the coolant will be diluted if a reduced mixture is used. A higher mixture can negatively influence the cooling capacity.
  • Page 52 Presentation WARNING: Do not open the cap quickly when the engine is hot, first release the overpressure with the cap partially slackened off. Risk of burns. Use protective gloves and protective goggles. Coolant draining engine block WARNING: The antifreeze fluid and coolant are hazardous to health.
  • Page 53 Only use a glycol based antifreeze that is approved by the applicable norms BS 6580:1992 or ASTMD 3306-89 or AS 2108-1977 (indicated on the packaging). The antifreeze agent must be intended for use with light alloy engines. Your Husqvarna supplier can provide the correct type of antifreeze agent.
  • Page 54 Presentation IMPORTANT INFORMATION: Glycol Water Freezing point If you use the incorrect type or mix different types of antifreeze agents, a chemical reaction may occur, 60 % 40 % - 47 °C which causes overheating and severe engine damage. These are not covered by the warranty. 50 % 50 % - 37 °C...

  • Page 55: Cutting Unit

    Presentation Cutting unit PT 26D can be equipped with cutting unit, Combi 132 with a 132 cm cutting width or Combi 155 with a 155 cm cutting width. The cutting unit is driven by a v-belt, a power take-off shaft and a propeller shaft from the engine. It is engaged by an electro magnetic clutch, which is located in front of the engine’s flywheel.

  • Page 56: Accessories

    Accessories The accessories are described in separate operator’s manuals. Contact your dealer if you require an accessory. Examples of original accessories available for Husqvarna PT 26D: • Traffic kit: Lighting with direction indicators, parking light and rotating warning lamp •...
  • Page 57 Presentation...

  • Page 58: Chapter 5:Driving

    Driving Chapter 5: Driving Mowing Tips WARNING: Use ear protection. Clear the lawn of stones and other objects that can be thrown out by the blades. • Locate and mark plants, rocks and other fixed objects in order to avoid collisions. •...
  • Page 59 Driving WARNING: Never drive the machine on terrain that slopes more than 10°. Mow upwards and downward on slopes, never sideways. Avoid sudden directional changes. Max 10° in all directions • The finest lawns are obtained by mowing often. Mowing will be more even and the clippings will be more evenly distributed across the area.

  • Page 60: Before Starting

    Driving • It is important to mow frequently when mowing with the mulching function. • Use the differential lock if there is a risk of wheel spin. The differential lock can be engaged during operation and turns can be made with it engaged. Before Starting IMPORTANT INFORMATION: The air intake grille behind the driver's seat must not...
  • Page 61 Driving • Carry out daily maintenance according to “Maintenance Schedule” on page 71. • Adjust the seat to the desired position. See “5-9. Seat” on page 35. • Adjust the steering wheel and steering wheel console to the desired position. •...

  • Page 62: Starting The Engine

    Driving Starting the engine 1. Apply the parking brake by moving the handle forward. The engine cannot be started if the parking brake is applied or if a driving pedal is pressed. Check that the switch for the cutting unit drive is depressed.
  • Page 63 Driving 3. Turn the ignition key to the glow plug heating position and keep it there until the warning light on the steering wheel console goes out and the starter motor engages. Glow plug heating is dependent on the engine temperature. If you require an extend glow plug heating period, you must wait in the OFF or ON position for 4 seconds.
  • Page 64 Driving WARNING: Never run the engine indoors, in enclosed or badly ventilated areas. Engine exhaust fumes contain poisonous carbon monoxide and carcinogenic substances. Engine speed control in idling mode 5. Set the desired engine speed (even idle) using the throttle control.
  • Page 65 Driving Starting with a weak battery WARNING: Lead-acid batteries produce explosive gases. Avoid sparks, open flames and smoking close to batteries. Always wear protective glasses in the vicinity of batteries. If the battery is too weak to start the engine, it should be recharged.
  • Page 66 Driving Connecting jump leads: • Connect each end of the RED lead to the POSITIVE terminal (+) on each battery, and take care not to short-circuit an end against the chassis. • Connect one end of the BLACK lead to the NEGATIVE terminal (-) on the battery that is fully charged.

  • Page 67: Driving The Machine

    Driving Driving the machine 1. Release the parking brake by pulling the handle Parking brake 2. Select high or low speed with the switch on the control panel. Speed selector...
  • Page 68 Driving 3. Carefully press down one of the pedals until the required speed is attained. Pedal (1) is pressed down to travel forwards and pedal (2) to reverse. Driving pedals 4. Lower the cutting unit to the ground using the lifting lever.

  • Page 69: Braking

    Driving 5. Activate weight transfer if desired using the switch (30) on the control panel. The weight transfer position must always be activated when driving up slopes and deactivated when driving down slopes. 6. Start the cutting unit as necessary using the switch for power take-off (22) on the control panel.

  • Page 70: Cutting The Engine

    Driving Cutting the engine If the engine has been worked hard, it is preferable to let the engine idle for a minute so it is running at its normal working temperature when it is stopped. 1. Switch off the cutting unit if it is running. 2.

  • Page 71: Bleeding In The Event Of Fuel Stoppage

    Driving 4. Apply the parking brake, when the machine is stationary, by first pulling up the lock handle (36) on the control panel and then press down the parking brake pedal (3). Bleeding in the event of fuel stoppage. See the chapter, Maintenance “Bleeding the fuel system”...

  • Page 72: Chapter 6:Maintenance

    Maintenance Chapter 6: Maintenance It is good practice to always check for leaks and loose components after use. Also check the machine and listen for knocking sounds. During hard use and in extreme conditions, the service intervals should be reduced. Check the cooling system’s antifreeze before the Winter.
  • Page 73 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Check the coolant level Check/clean the engine’s cooling air intake, radiator mesh and radiator Check fastenings (screws, nuts, etc.) Start the engine and blades, listen for unusual sounds...
  • Page 74 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Lubricate according to lubrication chart Clean the air filter and empty the particle trap Check the blades Change the engine oil and filter Replace hydraulic oil filter and check...
  • Page 75 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Check the wheel nuts Check the parking brake, adjust if necessary Check the safety function Check/adjust the cutting unit settings.
  • Page 76 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Adjust the valves and check the engine speed Replace the pump and generator belt Change the hydraulic oil and filter Change the oil in the bevel gear Change the coolant...
  • Page 77 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Check generator and starter motor Pressure test the fuel injection nozzles Check the coolant pump 1.

  • Page 78: Cleaning

    Maintenance WARNING: No service operations may be performed on the engine or cutting unit unless: • The engine is stopped. • The parking brake is on. • The ignition key has been removed. Cleaning Clean the machine directly after use. It is much easier to wash off grass cuttings before they dry.
  • Page 79 Maintenance IMPORTANT INFORMATION: Avoid using a high pressure washer or a steam cleaner. Lubricate the machine if necessary after cleaning. Carry out extra lubrication when the bearings have been exposed to a degreaser or a water jet. There is a major risk of water penetrating into bearings and electrical connections.

  • Page 80: Removing The Machine's Covers

    Maintenance Removing the machine’s covers Engine cover 1. Open the engine covers on both sides. 2. Remove the screws holding the engine cover. 3. Lift off the engine cover. Assemble in the reverse order. Engine cover’s mounting screws Checking radiatorgrilles Clean the radiator grille behind the driver's seat: Fold the driver's seat up.

  • Page 81: Cleaning The Radiator's Heat Exchanger

    Maintenance Cleaning the radiator's heat exchanger Remove the radiator grille. If the dirt is mixed with oil, first spray cold degreasing agent and wait approximately 5 minutes. Then flush the radiator with water jets from the engine compartment. Dirt mixed with oil, can be due to a leaking hydraulic oil cooler.

  • Page 82: Replacing The Pump And Generator Drive Belts

    2. Install a new belt. 3. Adjust the pump and generator belts as above. Checking and adjusting the throttle control Do not adjust the stop screws on the regulator housing, the engine’s warranty may become invalid. If doubts arise, contact a Husqvarna service workshop.

  • Page 83: Checking The Exhaust System

    Maintenance Checking the exhaust system Check regularly that the muffler is complete and secured correctly. Check that the pipe is not cracked or leaks. Temperature variations and vibrations can mean that the tightening torque for the screws drops. The screws should be checked when servicing to guarantee the correct torque.

  • Page 84: Adjusting The Parking Brake

    Maintenance Adjusting the parking brake Brake adjustment should be carried out by a Husqvarna workshop. WARNING: Parking brake control A poorly adjusted parking brake can result in reduced braking ability. 1. Raise the machine so that the wheels rotate freely.

  • Page 85: Servicing The Air Filter

    Maintenance Servicing the air filter If the engine seems to lack power or does not run smoothly this may be because the air filter is clogged. When driving with a dirty air filter, the engine does not receive enough air, which does not meet the environmental demands, and the engine does not operate at full efficiency.

  • Page 86: Replacing The Air Filter

    Maintenance Replacing the air filter Remove the cover held by two brace locks. Pull the air filter cartridge straight out and remove it. Wipe the inside of the air filter housing dry. If necessary, dampen the cloth with white spirit or fuel. Water or compressed air must not be used.

  • Page 87: Bleeding The Fuel System

    Maintenance Bleeding the fuel system If you have run out of fuel, the fuel system must be bled. Facilitatebleeding by pumping using a hand pump. Remove the fuel tank filler cap and check the return fuel to the tank. When bubble free fuel flows to the tank, the engine can be started.

  • Page 88: Servicing The Fuel Filter

    flow valve. The fuel filter should be replaced by a qualified technician, there is a risk of damaging the injection pump if carried out incorrectly. Contact your Husqvarna workshop. Used fuel filters areare environmentally hazardous waste.

  • Page 89: Checking The Tyre Pressures

    Maintenance Checking the Tyre Pressures The tyre pressure must be 100 kPa / 1.0 bar / 14.5 PSI for the front and rear wheels. The air pressure in cutting unit's pivot wheels should be 150 kPa / 1.5 bar / 21.8 PSI. IMPORTANT INFORMATION: Different air pressure in the front tyres or pivot wheels will result in the blades mowing the grass at...

  • Page 90: Servicing The Battery

    Maintenance Servicing the battery The machine is equipped with a sealed “maintenance- free” battery. The battery has an inspection hole that displays different colours: • Green = OK. • White = Charge the battery. • Red = Replace the battery. Battery WARNING: What to do in case of contact with battery acid:...

  • Page 91: Fuses

    Maintenance Fuses The machine’s electrical system is fused by three different types of fuse: 1. Automatic fuses; These reset automatically after a short-circuit in the circuit. No corrective action required by the operator. 2. Fusible link of the high output type; Replaced by the operator.
  • Page 92 Maintenance The circuit fuses are located on the circuit board under a cover on the control panel’s right-hand side. If any of these fuses trip, only the relevant circuit has no power. FU10 10 A Red Power take-off’s magnetic clutch 10 A Red Solenoid valves hydraulic system 10 A Red...

  • Page 93: Checking The Safety System

    Maintenance Checking the Safety System PT 26D is equipped with a safety system that prevents starting or driving under the following conditions. The engine can only be started when the parking brake is applied and the drive pedals are unactuated.

  • Page 94: Replacing The Bulb In The Headlight

    Maintenance Replacing the bulb in the headlight Applies to the headlight lamp. For information about the bulb type, see “Technical data”. IMPORTANT INFORMATION: When the plastic covers are removed, the unit with warning lamps is released. Do not damage it. 1.

  • Page 95: Light Setting

    Maintenance IMPORTANT INFORMATION: Do not touch the bulb glass with your fingers. Finger prints evaporate and mark the reflector. 5. Fold the wire loop for headlight lamp to one side and replace the bulb. 6. Assemble in the reverse order. Light setting Place the machine at least 5 m from a wall.

  • Page 96: The Cutting Unit Components

    Maintenance The Cutting Unit Components The components mentioned are: • A Pin • B Link joint • C Cutting unit mountings • D Cutting height settings • E Propeller shaft with quick couplings • F Service handle • G Drive belt with cover The Cutting Unit Components •...

  • Page 97: Side Shifting The Cutting Unit

    Maintenance Side shifting the cutting unit Cutting unit, Combi 155, can be side shifted 8 cm to the left or be centrally positioned on the machine. 1. Stop the engine. Switch off the weight transfer switch. IMPORTANT INFORMATION: Never leave the propeller shaft on the machine with one end detached.
  • Page 98 Maintenance 7. Remove the pins from the shafts and remove the shafts from the link joints. 8. Remove the screws for the bearing brackets. 9. Remove the adjustment screw from its mounting. TIP! Measure where the lock nut is located on the Release the link joints adjustment screw.
  • Page 99 Maintenance 14. Continue to screw in the adjustment screw for tilt angle. 15. Install the shaft for the link joint and its pins on both sides. 16. Start the engine and raise the cutting unit to the transport position. 17. Stop the engine. Adjustment screw tilt angle 18.

  • Page 100: Setting The Cutting Height And Tilt Angle

    Maintenance Setting the cutting height and tilt angle When a new cutting unit is attached, you need to adjust the tilt angle and cutting height. Adjustment must be made in the stated order. Starting position: • Check the air pressure in the tyres 100 kPa / 1,0 bar / 14,5 PSI and 150 kPa / 1.5 bar / 21.7 PSI for the pivot wheels.
  • Page 101 Maintenance 4. Set the handle for cutting height setting. Release the handle by pressing in the button and turning it to the horizontal position, so that it does not catch on bushes etc. The height interval is between 25 - 127 mm (1”- 5”), 7 positions.

  • Page 102: The Cutting Unit's Service Position

    Maintenance The Cutting Unit’s Service Position In order to provide good accessibility for cleaning, repair and servicing, the unit can be set in the service position. The service position means that the unit is raised and locked in the vertical position. Placing in the Service Position 1.
  • Page 103 Maintenance 5. Remove the pins on both sides. 6. Tilt the cutting unit. 7. Secure the cutting unit with the pin in the service handle. Keep track of the hairpin spring. 8. The cutting unit in the service position. Releasing the Service Position Images, see “Placing in the service position”.

  • Page 104: Cutting Unit Model

    Maintenance Cutting Unit Model PT 26D can be equipped with two different types of cutting unit: • Combi 132 • Combi 155 The digits indicate the cutting width in cm. Older types of cutting unit cannot be attached. Combi 155 can be mounted 8 cm (3 1/8") to one side in relation to the machine.

  • Page 105: Checking The Blades

    Maintenance Checking the Blades WARNING: Protect your hands with gloves when working with the blades. Risk of cutting. Sharpening blades It is important that the blades are undamaged and well-ground to give the best mowing result. IMPORTANT INFORMATION: Replacement or sharpening of the blades should be carried out by an authorised service representative.

  • Page 106: Replacing The Power Take-Off Belts

    Maintenance WARNING: If the blades are cracked, whether caused by poor repair or other damage, they could break while being used. Cracked and defective blades must always be replaced. The risk increases if the blades are poorly balanced. Replacing the power take-off belts Always replace the belts in pairs.

  • Page 107: Adjusting The Power Take-Off Belts

    Maintenance 5. Undo the locking nut (3) and the lower screw (4) for the belt tensioner. Remove the belt tensioner. 6. Do not unscrew the centre bolt in the drive shaft. Remove the rear bearing bridge’s screws (5) and the spacer washer (6). 7.

  • Page 108: Replacing The Cutting Unit Belt

    Maintenance Replacing the cutting unit belt WARNING: Protect your hands with gloves when working with the blades. There is a risk of crush injuries when working with the belt. Relieving the spring Replacing the belt on the Combi unit On these cutting units with “collision-proof” blades, the blades are driven by one V-belt.
  • Page 109 Maintenance 4. Slacken off two screws and remove the three others for the gear housing. Turn the gear housing so that the belts can be moved under the pulley. 5. Check that the belt tensioning equipment is not jammed or binding and replace the spring. 6.

  • Page 110: Removal Of Bioclip Plug

    Maintenance Removal of BioClip Plug To change a Combi unit from the BioClip function to a cutting unit with rear ejection, remove the BioClip plug, which is located under the unit. 1. Put the unit in the service position. See “The Cutting Unit’s Service Position”...
  • Page 111 Maintenance...

  • Page 112: Chapter 7:Lubrication

    Lubrication Chapter 7: Lubrication Lubrication Schedule When in daily use, the weekly lubrication (40 h) schedule should be carried out twice a week.

  • Page 113: General

    Lubrication General = Filter replacement The position numbers for the lubrication points refer to = Oil Change the lubrication instructions on the following pages. = Level check Remove the ignition key to prevent unintentional = Brush movements during lubrication. = Grease nipple When lubricating with an oilcan, it ought to be filled = Oil can with engine oil.

  • Page 114: Accessories

    Lubrication Accessories Lubrication or other maintenance of optional equipment or accessories, see “Accessories” on page 55, is not described in this manual. This equipment too, naturally, requires maintenance. See the manuals for the respective accessories for instructions. Lubricating in Accordance with the Lubrication Schedule The numbers in the following headings refer to the Pivot wheel bearings...
  • Page 115 Lubrication 3. Cutting unit’s bevel gear Sight glass on the plug on the front of the bevel gear. Check the level when the cutting unit is in the lower position. When filling, raise the cutting unit to the transport position and remove the plug with the sight glass.
  • Page 116 Lubrication 5. Lift cylinder 2 nipples, one at each end of the cylinder. Lubricate using a grease gun until grease is forced out. Lift cylinder 6. The power take-off shaft’s front support bearing Lubricate using a grease gun until grease is forced out. The power take-off shaft’s front support bearing...
  • Page 117 Lubrication 7. Engine Oil Viscosity and quality Use engine oil viscosity as illustrated, class API CH4 5W 20 or ACEA E5 or higher. 10W 30 The engine holds 2.5 litres of oil excluding the filter 15W 40 20W 50 (including filter 2.7 litres). -20 -10 50 C 86 104 122 F...
  • Page 118 Lubrication Checking the oil level Check the oil level in the engine when the machine is standing horizontally with the engine switched off. Remove the dipstick and wipe it clean. Then insert the dipstick again. Take the dipstick out again and read the oil level. The engine dipstick The oil level should be between the markings on the dipstick.
  • Page 119 Lubrication Filling engine oil The oil filler opening is on the valve cover. Never fill above the “FULL” mark (upper notch on the dipstick). Fill the oil slowly. Reinstall the dipstick before starting the engine. Start and run the engine at idling speed for approx.
  • Page 120 Lubrication IMPORTANT INFORMATION: Used engine oil is a health hazard and must not be disposed of on the ground or in nature; it should always be disposed of at a workshop or appropriate disposal location. Avoid skin contact; wash with soap and water in case of spills.
  • Page 121 Lubrication 7. Replacing the engine’s oil filter WARNING: Risk of spray and burn injuries. The engine’s oil filter may be very hot immediately after stopping. Allow the engine to cool somewhat first. Engine oil filter IMPORTANT INFORMATION: Replaced filters must be handed in to the workshop or other allotted place for disposal.
  • Page 122 The oil filter holds 0.2 litres of oil. 8. Hydraulic oil Viscosity and quality Hydraulic oil ISO VG. Viscosity 46 cSt. Local regulations may affect the choice of hydraulic oil due to environmental reasons, consult your Husqvarna workshop at the relevant location.
  • Page 123 Replaced filters must be handed in to the workshop or other allotted place for disposal. Avoid skin contact; wash with soap and water in case of spills. Hydraulic oil and filters should be changed by an authorised Husqvarna workshop.
  • Page 124 Lubrication 8. Hydraulic oil filter, change Hydraulic oil filters should be changed by an authorised Husqvarna workshop. 9. Cutting unit mounting Lubricate ball joints and shafts with the oil can. Cutting unit mounting 10. Lifting arm’s rear bearings 2 nipples, one on each side. Lubricate using a grease gun until grease is forced out.
  • Page 125 Lubrication 11. Driver’s Seat Tilt the seat back. Lubricate the lengthways adjustment mechanism with the oilcan. Lubricate the lengthways adjustment runners with grease. Pull the seat back and forth and lubricate on both sides. Driver’s Seat 12. Parking brake cables See “Lubricating the cables”...
  • Page 126 Lubrication 13. Control cylinder 2 nipples, one at each end of the cylinder, lubricate using a grease gun until grease is forced out. Control cylinder...
  • Page 127 Lubrication...

  • Page 128: Chapter 8:Trouble Shooting Guide

    Trouble Shooting Guide Chapter 8: Trouble Shooting Guide Check the machine refer to this guide before contacting your service workshop. Problem Cause The engine will not start. • Fuel tank empty • Incorrect fuel type • Air in fuel system •...
  • Page 129 Trouble Shooting Guide Problem Cause The engine runs erratically • Air in fuel system • Defective excess flow valve • Blocked fuel filter • Low feed pressure • Clogged air filter • Blocked fuel tank ventilation • Disconnected fuel line (diffuser jet) •...
  • Page 130 Trouble Shooting Guide Problem Cause Abnormal exhaust smoke • Black smoke: Incorrect fuel quantity from injection pump Defective injector Incorrect timing of injection pump Clogged air filter • Blue smoke: Engine oil level too high Serious engine damage • White smoke: Defective cylinder head gasket Cracked cylinder head Engine oil level too high...
  • Page 131 Trouble Shooting Guide Problem Cause The engine lacks power • Air in fuel system • Clogged air filter • Fuel filter blocked • Defective excess flow valve • Low feed pressure • Defective feed pump • Incorrect timing of injection pump •...
  • Page 132 Trouble Shooting Guide Problem Cause Battery does not charge • One or more battery cells faulty • Poor contact on the battery terminal cable connectors • Defective generator • Generator drive belt broken or slipping • Breakage on cables to the generator •...
  • Page 133 Trouble Shooting Guide Problem Cause Uneven mowing results • Blades blunt • Cutting unit set incorrectly • Long or wet grass • Grass build-up under the cover • Different air pressure in the right and left tyres • Different air pressures in the tyres on the pivot wheels •...

  • Page 134: Chapter 9:Storage

    Storage Chapter 9: Storage Winter Storage At the end of the mowing season, the machine should be readied for storage (or if it will not be in use for a long period). There is less of a risk of corrosion damage if the machine is cleaned and stored in a dry environment.
  • Page 135 Storage WARNING: Never store an engine with fuel in the tank in poorly ventilated spaces where fuel vapour can come in contact with open flames, sparks, or a pilot light such as in a boiler, hot water tank, clothes drier, etc. Handle the fuel with care.

  • Page 136: Service

    5. Remove the battery. Clean, charge, and store in a cool place. Maintenance charging is recommended. An inappropriate charger will destroy the battery. Contact your Husqvarna dealer for suitable chargers. 6. Store the machine in a clean, dry place and cover it for extra protection.
  • Page 137 Storage...

  • Page 138: Chapter 10:Electrical System

    Electrical system Chapter 10: Electrical system 1. Headlight 2. Indicator panel 3. Control panel 4. Circuit board 5. Circuit fuses 6. Starter 7. Generator 8. Sensor engine temperature (2) 9. Oil pressure sensor (concealed) 10. Fuses and main relay 11. Main fuse 12.

  • Page 139: Chapter 11:Hydraulic System

    Hydraulic System Chapter 11: Hydraulic System Hydraulic System, Component Locations 1. Quick couplings, see diagram 6. Valve block transmission 10. Inlet strainer 2. Lift cylinder 7. Wheel motors 11. Hydraulic cooler 3. Control cylinder 8. Hydraulic pump Control and air system 12.
  • Page 140 Hydraulic System Hydraulic diagram...
  • Page 141 Hydraulic System Keep the hydraulic system clean. Remember to: • Thoroughly clean before the top-up cap is opened or any connector loosened. • Use clean containers when topping up the oil. • Only use pure oil that has been stored in a sealed container.

  • Page 142: Chapter 12:Fuel System

    Fuel system Chapter 12: Fuel system Fuel system with in-line pump has excellent operational reliability as long as the fuel is kept clean. If contaminated fuel is filled or enters the system in the incorrect manner, the risk of malfunction or wear/ damage to the injection pump increases.
  • Page 143 Fuel system Fuel system...

  • Page 144: Technical Data

    Technical Data Technical Data Data PT 26D Dimensions Excluding cutting unit Length, base machine 2070 mm / 6.79 ft Width, base machine 1170 mm / 3.83 ft Height 1300 mm / 4.26 ft Operating weight, base machine 600 kg / 1322 lb Wheelbase 1180 mm / 3.87 ft...
  • Page 145 Technical Data Data PT 26D Displacement 1131 cm Fuel min 45 Cetane 2.0 - 4.5 cSt @ 40 °C 0.835 - 0.855 kg/l Sulphur< 0.2 w% Tank volume 37.5 liters/9.9 US Gal Viscosity see page116 Class API CH4 or ACEA E5 Oil volume 2.5 litres/2.6 US qt...
  • Page 146 Technical Data Data PT 26D Battery 12 V, 40 Ah Main fuse 125 A Supply fuse circuit board 50 A Fuse Yellow Flat pin 20 A Fuse Red Flat pin 10 A Fuse Brown Flat pin 7.5 A Bulb headlight...
  • Page 147 Technical Data Data PT 26D Maximum speed Forwards, high speed 18 km/h Forwards, low speed 13 km/h Reverse, low speed 13 km/h Max inclination, all directions 10° Cutting unit Combi 155 Cutting width 1550 mm/61" Cutting heights 25.4 - 127 mm / 1" - 5"...
  • Page 148 Technical Data Data PT 26D Cutting heights 25.4 - 127 mm / 1" - 5" Blade length 490 mm/19.3" Width 1340 mm / 52.8" Weight approximately 100 kg / 29.3lb Length machine with unit approximately 2730 mm / 8.96 ft Bevel gear, oil volume 0.6 litres...
  • Page 149 Technical Data IMPORTANT INFORMATION: When this product is spent and is no longer used it should be returned to the dealer or other authority for recycling. IMPORTANT INFORMATION: In order to introduce improvements the specification and design are subject to alteration without prior notice.

  • Page 150: Design Standards

    Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declare under sole responsibility that the Husqvarna PT26D, from 2006’s serial numbers and onwards (the year is clearly stated in plain text on the rating plate with subsequent serial number), conforms with the requirements of the COUNCIL’S DIRECTIVE: of June 22, 1998 “relating to machinery”...
  • Page 151 Design standards Diverse design standards The electrical system is designed to conform to requirements of insurance companies regarding the risk of fire. The electrical system has an electrical main circuit breaker and max. 10 A in the control circuit. All electrical cables are protected by a protective hose.
  • Page 152 Index Children Chronometer Accessories Circuit fuses Adjusting the steering wheel setting Cleaning Air filter Cold Air filter cartridge Combi Air intake grille Combi unit Air pressure Contamination Antifreeze Control cylinder Antifreeze agent Control panel Automatic dipped beam mode Automatic dipped beam Coolant draining Coolant filling Coolant level...
  • Page 153 Index Dirt Fuel Drain plug Fuel filter drive shaft Fuel hygiene Driver’s Seat Fuel level Driving pedals Fuel system Full beam Fuses Electrical system Electro magnetic clutch Emergency starting Generator drive belt Engine coolant temperature Glow plug heating Engine cover Glow plug heating position Engine Oil Glycol...
  • Page 154 Index Injection pump Oil pressure Injectors Oily dirt Inspection hole Ordering spare parts Jump leads Parallelism Parking brake Parking brake cables Lift cylinder Parking lights Lubrication schedule Particle trap Lumbar support Passengers Pedal Pivot wheel bearings Main fuse Power outlet Maintenance Power take-off belt Maintenance work...
  • Page 155 Index Traffic kit Transport Safety Transport Position Safety circuit Type designation Safety System Tyre air pressure Seat Tyre pressure Serial Number Service position Sharpening the blades Side shifting User responsibility Sight glass Slopes spacer ring V-belt Spare parts Viscosity Sparking Speed control Start throttle Warning lamps...
  • Page 156 115 15 26-26...

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