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Husqvarna ProFlex 18 ProFlex, 20 ProFlex Operator's Manual

Husqvarna lawn mower operator's manual
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Rider 18 ProFlex
Rider 20 ProFlex
Operator´s manual
Please read these instructions carefully and make sure
you understand them before using the machine.
101 89 84-26



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  Summary of Contents for Husqvarna ProFlex 18 ProFlex, 20 ProFlex

  • Page 1 Rider 18 ProFlex Rider 20 ProFlex Operator´s manual Please read these instructions carefully and make sure you understand them before using the machine. 101 89 84-26...
  • Page 2 Svenska –...
  • Page 3: Table Of Contents

    Rider 18 ProFlex and Rider 20 ProFlex Safety instructions ... 2 Safety rules for USA ... 2 Explanation of symbols ... 4 Safety instructions ... 5 General use ... 5 Driving on slopes ... 6 Children ... 7 Maintenance ... 7 Presentation...
  • Page 4: Safety Instructions

    SAFETY INSTRUCTIONS Safe operation practices for ride-on mowers IMPORTANT! This cutting machine is capable of amputating hands and feet and throwing objects. Failure to ob- serve the following safety instructions could result in serious injury or death. General operation 1. Read, understand and follow all instructions in the manual and on the machine before start- ing.
  • Page 5 SAFETY INSTRUCTIONS IV. Service 1. Use extra care in handling gasoline and other fuels. They are flammable and vapours are explosive. a) Use only an approved container. b) Never remove gas cap or add fuel with the engine running. Allow engine to cool before refuelling.
  • Page 6: Explanation Of Symbols

    EXPLANATION OF SYMBOLS These symbols are on the machine and in the instructions. Study them carefully so that you know what they mean. Reverse Neutral Fast Oil pressure Cutting height Use hearing protection Hydrostatic freewheel Warning! Rotating blades Sound level Never use the machine if persons, especially children, or animals, are in the vicinity...
  • Page 7: Safety Instructions

    SAFETY INSTRUCTIONS These instructions are for your safety. Read them carefully. This symbol implies that important safety rules are applicable. This is for your safety and the operating reliability of the machine. General use: • Make yourself familiar with the controls and how to stop quickly.
  • Page 8: Driving On Slopes

    SAFETY INSTRUCTIONS • Watch out for traffic when working close to a road, or crossing one. • Be careful when rounding a fixed object so that the blades do not hit it. Never drive intentionally over a foreign object. • The machine is heavy and can cause very severe crush injuries.
  • Page 9: Children

    • Do not try to stabilise the machine by placing one foot on the ground. • The Rider lawn mower must never be driven close to an edge or ditch when cleaning the chassis. Children Tragic accidents can occur if the driver does not pay attention to children in the vicinity.
  • Page 10 SAFETY INSTRUCTIONS machine, and leave space for the fuel to expand since the heat from the engine and hot sun can cause the fuel to run over. • Avoid overfilling. If petrol has been spilt on the machine wipe it up and wait until it has evapor- ated before starting the engine.
  • Page 11: Presentation

    Presentation Congratulations on choosing an excellent quality product, Rider ProFlex. These instructions describe two models, Rider 18 ProFlex and Rider 20 ProFlex. Rider ProFlex is equipped with Vanguard V-Twin engines from Briggs & Stratton in 18 and 20 horsepower designs. Location of the controls 1.
  • Page 12: Throttle Control

    PRESENTATION Throttle control The throttle control regulates the engine speed, and thereby also the rotation speed of the blades. To increase or reduce the engine speed the control is moved forwards or backwards. Choke lever The choke lever is used for cold starting and to give the engine a richer fuel mixture.
  • Page 13: Cutting Unit

    Cutting unit Rider 18 ProFlex and Rider 20 ProFlex can be equipped with numerous attachments. The BioClip unit finely cuts the lawn by cutting the grass several times before returning the clippings to the lawn as fertiliser. The cutting unit with side or rear ejection, that is, the clippings are ejected to the side or behind the unit.
  • Page 14: Lever For Adjustment Of Cutting Height

    Lever for adjustment of the cutting height The cutting height can be adjusted to 7 different positions with the cutting height lever. To achieve an even cutting height it is important that the tyre pressures are the same on the front wheels (60 kPa).
  • Page 15: Driving

    Before starting • Read the safety instructions and information on the location and function of the controls before starting (see pages 5–12). • Conduct daily maintenance before starting (see maintenance schedule on page 17). • Adjust the seat to the required position. Starting the engine 1.
  • Page 16: Driving The Machine

    5. When the engine starts release the ignition key immediately back to neutral position. IMPORTANT INFORMATION Do not run the starter for more than about 5 seconds at a time. If the engine does not start, wait about 10 seconds before trying again.
  • Page 17: Cutting Tips

    3. Select the required cutting height (1–7) with the cutting height lever. 4. Push in the lock button on the lift lever and lower down the cutting unit. Cutting tips WARNING! Clear the lawn from stones and other objects which can be thrown out by the blades.
  • Page 18: Stopping The Engine

    WARNING! Never drive the machine on ground at an angle of more than 15°. Mow slopes upwards and downwards, never across. Avoid sudden changes in direction. Stopping the engine Preferably allow the engine to idle for a minute to obtain normal working temperature before stopping it if it has been working hard.
  • Page 19: Maintenance

    The following is a list of the maintenance which should be conducted on the machine. For the items which are not described in these instructions go to an authorised service workshop. Maintenance Check the engine’s oil level Check the engine’s cooling air inlet Check the fuel pump’s air filter Check the transmission’s air inlet Check the transmission’s oil level...
  • Page 20: Dismantling Of The Machine Hoods

    Dismantling of the machine hoods Engine hood Release the two rubber straps on the rear edge of the engine hood and lift off the hood. Nose Loosen the quick-action lock and lift off the nose. Right-hand fender Dismantle the foot-plate (1), screws (2 and 3), and lift off the fender.
  • Page 21: Checking The Engine's Oil Level

    MAINTENANCE Check the engine’s oil level Check the oil level in the engine when the machine is horizontal. Dismantle the engine hood as per the description on page 18. Take out the dip stick, wipe off the oil, and insert again.
  • Page 22: Checking The Transmission's Air Intake

    Check the transmission’s air intake Check that the transmission’s air intake in not blocked. Check the transmission’s oil level 1. Check the transmission’s oil level by looking through the mesh on the air intake. The oil level should lie between the MIN and MAX markings on the oil canister at 20°...
  • Page 23: Checking And Adjusting The Steering Wires

    Checking and adjustment of the steering wires The steering is controlled by means of wires. These can in time become slack, which implies that the adjustment of the steering becomes altered. Check and adjust the steering as follows: 1. Dismantle the frame-plate by releasing the screws (two on each side).
  • Page 24: Adjusting The Brakes

    Adjusting the brakes The brakes are adjusted as follows: 1. Loosen the lock nuts (A). 2. Adjust the wire using the adjuster screw (B) until the play on the wire is taken up. 3. Tighten the lock nuts (A). WARNING! Poorly adjusted brakes can result in reduced braking power.
  • Page 25: Replacement Of Air Filter

    Replacing the air filter If the engine seems to lack power or does not run smoothly this may be because the air filter is clogged. It is therefore important to replace the air filter at regular intervals (see maintenance schedule on page 17 for correct service interval).
  • Page 26: Fitting The Cutting Unit

    The parts of the cutting unit A cutting unit with a rear ejector has been used in the instructions below, however, the same procedure applies to other units if not otherwise stated. The parts mentioned are: A. Catch E. Height setting arm B.
  • Page 27 4. Slide in the unit so that the inner pins (B) bottom in the attachment frame’s groove. 5. Fit the height setting arm’s rear bracket when fitting the attachment. Off-load the arm by pulling the front of the frame upwards. 6.
  • Page 28: Setting The Parallelism

    Setting the parallelism and height for the cutting unit with rear ejector and BioClip unit The base unit is adjusted at the factory. When one of the attachments is fitted, the parallelism and height need to be adjusted. Starting point: 1.
  • Page 29: Checking And Adjusting The Ground Pressure

    Checking and adjustment of the cutting unit’s ground pressure To achieve the best cutting results the cutting unit should follow the underlying surface without pres- sing too hard against it. The pressure is adjusted with a screw on each side of the machine.
  • Page 30: Service Position For The Cutting Unit

    Service position for the cutting unit The cutting unit can be set in a service position to provide good access for cleaning, servicing and repair. The service position means that the unit is raised and locked in the vertical position. Placing in the service position 1.
  • Page 31: Dismantling The Cutting Unit

    Dismantling the cutting unit 1. Place the Rider on a level surface. 2. Apply the brakes by pressing down the pedal and lock using the pushbutton. 3. Lift up the unit using the lifting lever. 4. Remove the nose. 5. Remove the belt adjuster’s spring. 6.
  • Page 32 9. Loosen the height setting arm by moving the rear section upwards. When dismantling the cutting unit, off-load the arm by pulling the frame’s front section upwards. 10. Pull the handle and unit simultaneously. Release the handle when the unit has come out a little. 11.
  • Page 33: Dismantling The Belts

    Dismantling the belt Starting point when dismantling the belt: • No unit attached to the Rider. • The front of the belt is hung around the hook guard’s handle. How the front of the belt is removed from the front belt pulley is evident from sections 5–8, on page 27.
  • Page 34: Assembling The Belts

    Assembling the belt 1. Position the belt from the front and let the front end of the belt hang around the hook guard’s handle. 2. Fit the belt on the intermediate pulley and against the support wheel. 3. Fit the steering plate under the support wheel and tighten the bolts using two 13 mm socket spanners.
  • Page 35: Changing The Cutting Unit's Belts

    Replacing the cutting unit’s belts Belt replacement on the BioClip unit Two transmission belts that synchronise the rota- tion of the blades power a BioClip unit. The belts are located under a hood on the cutting unit. 1. Loosen the parallelism arm’s front pin/bolt and fold the arm backwards.
  • Page 36 IMPORTANT INFORMATION The blades on a BioClip deck should be set at 90 degrees to each other. In all other cases the blades can collide and cause serious damage to the cutting unit. 4. Assembly: First fit the lower belt and then the upper belt.
  • Page 37: Changing The Oil

    Changing the oil The oil should be changed for the first time after 8 hours of running time. Thereafter it should be changed every 50 hours of running time. If the engine is run hard or during high temperatures the oil should be changed every 25 running hours.
  • Page 38: Replacement Of The Oil Filter

    Replacement of the oil filter 1. Dismantle the engine hood as described on page 18. 2. Drain off the engine oil according to the work description “Changing of engine oil” on page 27. 3. Dismantle the oil filter. If necessary use a filter extractor.
  • Page 39: Checking And Adjustment Of Throttle Wire

    Checking and adjustment of the throttle wire Check that the engine responds to the throttle control and that the correct engine speed is achieved at full throttle. If in doubt, contact the service workshop If necessary the following adjustment can be made: 1.
  • Page 40: Checking The Tyre Pressure

    Checking the tyre pressure The tyre pressure should be 60 kPa (0.6 kp/cm all round. To improve driving the pressure on the rear tyres can be reduced to 40 kPa (0.4 kp/cm The maximum tyre pressure is 100 kPa (1.0 kp/cm IMPORTANT INFORMATION Different tyre pressures on the front tyres will result in the blades cutting the grass...
  • Page 41: Trouble Shooting Schedule

    TROUBLE SHOOTING SCHEDULE Problem Engine will not start. Starter does not pull round engine. Engine does not run smoothly. Engine seems to have no power. Engine overheats. Battery does not charge. Machine vibrates. Uneven mowing. Procedure • Fuel tank empty. •...
  • Page 42: Storage

    Winter storage At the end of the season the machine should immediately be put in order for storage, also if it is going to stand idle for more than 30 days. Fuel which is left to stand for long periods (30 days or more) can leave tacky deposits which can block the carburettor and interfere with the engine.
  • Page 43: Wiring Diagram

    1. Brake switch, hydrostat 2. Microswitch, cutting unit 3. Microswitch, seat 4. Ignition lock 5. Counter 6. Start relay 7. Engine WIRING DIAGRAM Explanation of colour abbreviations in wiring diagram. R = Red B = Blue W = White BL = Black Y = Yellow BR = Brown English –...
  • Page 44: Technical Data

    Dimensions Length without unit Width without unit Height Unladen weight Wheel base Track Tyre size Tyre pressure, front & rear Max. gradient Engine Manufacture Power Displacement Fuel Tank volume Oljevolym Oil volume incl. filter Start Electrical system Type Battery Spark plug Transmission Manufacture When the service life of this product has been served and it is no longer used it should be returned to...
  • Page 45 We, Husqvarna AB, S-561 82 Huskvarna, Sweden, tel. +46 36-146500, declare under sole responsibility that the rider mowers Husqvarna Rider 18 ProFlex and Rider 20 ProFlex from 1998’s serial numbers and onwards (the year is clearly stated in plain text on the type plate with subsequent serial number), is in conformity with the following standards or other normative documents following the provisions in the COUNCIL’S...
  • Page 46 NOTES – English ´*2§J¶6)¨...
  • Page 47 English –...
  • Page 48 ´*2§J¶6)¨ 1998W51...

This manual is also suitable for:

Rider 18 proflexRider 20 proflex