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Husqvarna Rider ProFlex 18 Workshop Manual

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For Husqvarna Parts Call 606-678-9623 or 606-561-4983
Workshop manual
Rider ProFlex 18
Rider ProFlex 21
English
www.mymowerparts.com

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  Summary of Contents for Husqvarna Rider ProFlex 18

  • Page 1 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Workshop manual Rider ProFlex 18 Rider ProFlex 21 English www.mymowerparts.com...
  • Page 2: Table Of Contents

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Workshop manual for Rider ProFlex 18 and ProFlex 21 Contents Replacing the Articulated Steering Bearings ..39 Removing the Pendulum Shaft ......41 Contents ..............1 Replacing Bushings ......... 42 Safety Instructions ..........2 Fitting the Pendulum Shaft ....... 43 General Instructions ..........2...
  • Page 3: Safety Instructions

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SAFETY INSTRUCTIONS Safety Instructions General Instructions No one may repair the rider unless they have read This workshop manual is written for personnel with and understood the content of this workshop general knowledge about the repair and service of manual.
  • Page 4: Special Tools

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SPECIAL TOOLS Special Tools The following special tools are used when working on the rider. Special tools for the engine and transmission are specified in the relevant Workshop Manuals. 8009-519 506 66 48-01 Engine belt pulley remover.
  • Page 5 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SPECIAL TOOLS 506 56 76-01 8009-518 8009-194 8009-517 8009-515 The figures show how the special tools are used. English- www.mymowerparts.com...
  • Page 6: Specifications

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SPECIFICATIONS Specifications Rider ProFlex 18 Rider ProFlex 21 Dimensions and weight Length, base machine 2,080 mm/207.87 cm with tow hook 2,080 mm/207.87 cm with tow hook Length with Combi 112 2,450 mm/245.06 cm with tow hook 2,450 mm/245.06 cm with tow hook...
  • Page 7 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SPECIFICATIONS Rider ProFlex 18 Rider ProFlex 21 Main fuse Flat pin, 15 A Flat pin, 15 A Spark plug Champion RCJ8Y NGK BPR4ES Electrode gap 0.75 mm/0.030" 0.75 mm/0.030" Bulbs Philips Brilliant Pro...
  • Page 8: Delivery And Dealer Service

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Delivery and Dealer Service After the First 8 Hours Delivery Service Change engine oil. Fill the battery with battery acid and charge for four hours. 25-Hour Service Fit the steering wheel, seat and, where applicable, other components.
  • Page 9: 300-Hour Service

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE 300-Hour Service At least once each season Inspect the machine. Come to agreement with Clean the engine’s cooling air intake the customer as to what additional work is to (25 hours).
  • Page 10: Service Schedule

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Service Schedule = Described in this workshop manual. The following is a list of maintenance procedures that must be performed on the rider. Most of the ❍ = Not described in this workshop manual or the points that are not described in this workshop operator’s manual.
  • Page 11 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Maintenance Page Daily Daily Maintenance interval Weekly mainte- mainte- least in hours main- nance nance once tenance before after a year ❍ Clean thoroughly around the transmission. Clean around all belts, belt pulleys, etc.
  • Page 12 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Maintenance Page Daily Daily Maintenance interval Weekly mainte- mainte- least in hours main- nance nance once tenance before after a year Clean/replace the spark plugs. Change the inline fuel filter.
  • Page 13: Delivery Procedures

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Delivery Procedures To our dealers In conjunction with the delivery, you shall also give A well performed pre delivery service is the first the customer the information required to handle step towards an active after-sales market.
  • Page 14 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Packaging and Unpacking Packed components: The machine is normally packed using special Number Component packaging when delivered from the factory. This 1 pc Steering wheel with steering rod packaging is comprised of a wood base with a...
  • Page 15: Battery

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Battery WARNING! Actions with acid contact External: Rinse thoroughly with water. Internal: Drink large quantities of water or milk. Contact a doctor as soon as possible. Eyes: Rinse thoroughly with water. Con- tact a doctor as soon as possible.
  • Page 16: Steering Wheel

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Steering Wheel • Fit the steering wheel with the steering rod on the steering column. Choose a suitable height position. • Thread the Allen screw into the thread of the steering column.
  • Page 17: Checking The Transmission Oil Level

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Checking the Transmission Oil Level Remove the transmission cover. Loosen both screws (one on each side) and lift off the transmission cover. Leave the cover removed for now. 6008-209 Transmission cover Check that there is oil in the transmission’s oil...
  • Page 18: Checking And Adjusting The Cutting Unit

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Checking and Adjusting the Cutting Unit Performed after checking the tyre air pressures. See “Adjusting the Unit’s Parallelism and Cutting Height” on page 64. Test Running Fill with petrol. The engine should be run on a minimum of 87-octane unleaded petrol (not mixed with oil).
  • Page 19: Engine Speed Regulator

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 &XWWLQJ KHLJKW VHWWLQJ +\GUDXOLF FXWWLQJ XQLW OLIW 3UH GHOLYHU\ VHUYLFH FRQILUPDWLRQ www.mymowerparts.com...
  • Page 20: Design And Function

    ProFlex 18 from the 2003 model and the ProFlex mowing and the best possible cutting result. 21 from the 2002 model. There are special In addition, the Husqvarna Riders can also be workshop manuals for older machines. equipped with various accessories, such as moss Husqvarna Riders are a series of large capacity rakes and snow blades, which makes them flexible...
  • Page 21: Serial Number

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DESIGN AND FUNCTION Serial Number The machine’s serial number is found on the printed plate at the front under the seat. Stated on the plate, from the top, are: • The machine’s type designation.
  • Page 22: Rider Proflex 18 And Proflex

    It is important that only original spare parts are used to repair the engines. If other parts are used, the guarantee is invalidated. The Rider ProFlex 18 and ProFlex 21 have twin-cylinder, overhead valve engines with pressure lubrication and separate oil filters.
  • Page 23: Steering

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DESIGN AND FUNCTION Steering A Rider easily cuts around all obstacles on the All mowers in the Rider series have articulated lawn. steering. The ProFlex 21 is fitted with hydraulic servo steering. The steering force from the...
  • Page 24: Driving

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DESIGN AND FUNCTION Driving The Rider ProFlex is equipped with a hydrostatic transmission that gives the driver complete control over driving. The speed is controlled variably using the pedals, forward or back. The Rider ProFlex 21 has a differential lock that enables the rear wheels to be run locked.
  • Page 25 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DESIGN AND FUNCTION Hydrostatic transmission K62 for Rider ProFlex 18 with fitted cooling fan. The difference can be seen externally in that K62 has no differential lock controls and that the oil drainage is at the rear of the K66.
  • Page 26: Cutting Unit

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DESIGN AND FUNCTION Cutting Unit drive belt. If you want to change from a Combi 112 The entire Rider series is equipped with a front- to a Combi 122, the drive belt must also be mounted cutting unit in order to mow efficiently...
  • Page 27 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DESIGN AND FUNCTION The cutting height is adjusted using the lever that forward perpendicular shaft on the top of the is attached to the shaft with a joint and a spring. mowing deck cover. When the shaft is rotated, it...
  • Page 28: Repair Instructions

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Repair Instructions Removing the Engine Remove the engine cover. Loosen the battery’s retaining strap. Remove the protective cover. IMPORTANT INFORMATION Hold the battery cable bolts in place so that the electrodes are not strained.
  • Page 29 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Loosen the cover plate over the muffler, two screws on each side of the muffler, and remove the plate. 8009-035 Muffler cover plate Loosen the exhaust pipe’s pipe clamp and the muffler’s four fastening screws.
  • Page 30: Fitting The Engine

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 12. Use the 506 66 00 48-01 puller if necessary. 8009-518 Engine belt pulley remover 13. Remove the engine fixtures, two on each side of the engine, and remove the engine from the rider.
  • Page 31 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Fit the belt pulley with tool no. 506 56 06- 01 and tighten with a torque of 80 Nm/56 lbf. ft. Use tool no. 506 89 92-01 to counter. Place both belts in place on the belt pulley.
  • Page 32 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Attach the cover plate over the muffler, two screws on each side of the muffler. 8009-035 The muffler’s protective plate Press the fuel hose into place against the fuel pump and attach the hose clamp.
  • Page 33: Fuel Tank

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Fuel tank Removal Fitting IMPORTANT INFORMATION WARNING! Overly long screws can damage the tank Petrol is highly flammable and and cause fuel leakage. environmentally hazardous. Only use approved screws specified in the Exercise caution to avoid fire and...
  • Page 34: Changing The Engine Oil

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Changing the Engine Oil WARNING! The engine oil should be changed the first Engine oil can be very hot if it is time after 8 hours running time. It should then...
  • Page 35: Checking And Adjusting The Steering Cables

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Checking and Adjusting the Steering Cables The steering is governed by means of cables. After a period of use these can become stretched, which means the steering setting may have changed.
  • Page 36: Replacing The Steering Cables

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 8009-300 Power steering and steering cables Replacing the Steering Cables Removing/Fitting the Power Steering Loosen the steering cables’ rear mount (1). ProFlex 21 Remove the frame plate. Remove the cutting unit.
  • Page 37: Removing/Fitting The Cable Pulley

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 8009-358 Steering cables and cable pulley Removing/Fitting the Cable Pulley Remove the frame plate. Loosen the steering cables’ rear mount (1). Remove the screw (2) and remove the cable pulley (5).
  • Page 38: Adjusting The Brake

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Adjusting the Brake Check that the brakes are correctly adjusted by placing the rider on a slight downhill slope with the clutch disengaged and activating the brake. If the rider does not stand still, the brake needs adjusting.
  • Page 39: Adjusting Of The Hydrostatic Transmission Cable

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Adjusting of the Hydrostatic Transmission Cable The hydrostatic transmission cable (on the left side) is adjusted in the following manner: Remove the transmission cover. Loosen both screws (one on each side) and lift off the transmission cover.
  • Page 40: Checking And Adjusting The Choke Cable

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Checking and Adjusting the Choke Cable If the engine produces black smoke or is difficult to start, this can be because the choke cable is incorrectly adjusted (upper cable). If adjustments are necessary, they can be made as follows: Loosen the clamping screw for the cable’s...
  • Page 41 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 10. ProFlex 21 Clean, see “Working Methods” on page 82. Loosen the hydraulic hoses from the hydrostatic transmission. 8009-366 Hydraulic hoses 11. Loosen the steering cables (1) and remove the steering collar.
  • Page 42: Removing The Pendulum Shaft

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 15. Remove the inner circlip (1) by the lower bearing (see illustration). The rear carriage is now loose and can be moved. Then loosen the outer circlip (2) and remove the bearing from below 16.
  • Page 43: Replacing Bushings

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Remove the fan; it is held in place by a nut and washer. 8009-373 Cooling fan Loosen the idler’s spring (1) and pull off the drive belt. Remove the locking spring and loosen the throttle control’s link joint (2) (on the...
  • Page 44: Fitting The Pendulum Shaft

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Fitting the Pendulum Shaft Lubricate half the shaft (the half that has not been lathed) and press it into the steering spindle from the rear (see illustration). Fit the washer and circlip on the pendulum shaft by the inner mount.
  • Page 45: Removing/Mounting The Hydrostatic Transmission

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Removing/Mounting the Hydrostatic Transmission Jack up the machine in front of the rear frame and remove the rear wheels. Remove the transmission cover. 6012-035 Jacking up ProFlex 21 Clean, see “Working Methods” on page 82.
  • Page 46 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 11. Loosen the cable to the differential lock by loosening the lock nuts (at the top mount) and unhooking the cable from the rear mount. 12. Place a garage jack under the hydrostatic transmission and loosen its five fitting...
  • Page 47: Replacing The Hydrostatic Transmission Shaft Seals

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Replacing the Hydrostatic Transmission Shaft Seals Seal Replacement, Ingoing Shaft Remove the fan; it is held in place by a nut. Remove the belt pulley from the ingoing shaft by pulling it outwards and then removing the circlip under the pulley.
  • Page 48: Seal Replacement, Outgoing Shafts

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Seal Replacement, Outgoing Shafts Remove the rear wheels. Remove the circlips that hold the wheel hubs onto the shafts and remove the hubs by pulling them outwards. Do not lose the key that sits between the wheel/ hub and the shaft.
  • Page 49 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Place the seal on the shaft, with the metal spring facing inwards, and press it in carefully. Use the thin end of a 1/4" extender to carefully tap the seal down until it is seated in the bottom of the shaft housing.
  • Page 50: Replacing The Hydrostatic Transmission Cable

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Replacing the Hydrostatic Transmission Cable Removing the Hydrostatic Transmission Cable Remove the frame plate by loosening the screws (two on the power steering housing). 8009-340 Frame plate Loosen the hydrostatic transmission cable’s forward lock nut a π...
  • Page 51 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Follow the hydrostatic transmission cable backwards towards the hydrostatic transmission and cut the plastic tie around the cable. 8009-204 Cut the plastic tie Remove the locking spring by the hydrostatic transmission cable’s rear link joint.
  • Page 52: Fitting The Hydrostatic Transmission Cable

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 10. Remove the entire hydrostatic transmission cable. 6019-009 Remove the hydrostatic transmission cable. Fitting the Hydrostatic Transmission Cable Screw in the front link joint on the new hydrostatic transmission cable and tighten the lock nut.
  • Page 53 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Tighten the hydrostatic transmission cable clamp. Press the link joint onto its fastener and attach the locking spring. 6019-024 Front clamp Attach the link joint to the rear part of the hydrostatic transmission cable.
  • Page 54 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Connect the rear link joint and attach the locking spring. 10. Tighten the rear link joint’s lock nut. 11. Check the settings of the neutral position contact. See “Microswitch: Neutral 8009-203 Locking spring Position”...
  • Page 55: Bleeding The Hydrostatic And Hydraulic Systems

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Bleeding the Hydrostatic and Hydraulic Systems Remove the transmission cover. IMPORTANT INFORMATION Ensure cleanliness. Used oil may not be reused. See “Hydraulic Hygiene” on page 81. IMPORTANT INFORMATION The tank must never be run empty while 6008-209 work is underway.
  • Page 56: Adjusting The Transmission's Neutral Position

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Adjusting the Transmission’s Neutral Position Bleed the hydrostatic transmission’s oil system and for ProFlex 21 also the hydraulic system. Lift the rear of the rider so that the wheels spin freely and place jack stands under the machine.
  • Page 57: Transmission Maintenance

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Transmission Maintenance Oil Change Most homeowners with gardens do not have the tools or experience needed to change the transmission oil. The transmission probably has a longer life than the rider itself, which means that being able to change the oil is not of major concern to the average consumer.
  • Page 58 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Hydrostatic transmission type K66 ProFlex 21 The transmission holds 2.5 litres (2.6 US qt) (SAE10W/30 engine oil, class SF-CC). The hydrostatic transmission filter and hydraulic filter should be changed when oil changes are performed.
  • Page 59: Adjusting The Lever Housing

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Adjusting the Lever Housing The machine and cutting unit shall be on a flat surface. PF 18 Remove the plastic cover between the seat and the lever housing. PF 21 Remove the plastic cover from the hydraulic valve block.
  • Page 60 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS PF18, PF 21 Check that the dome nut for the screw for the chain segment is in position for maximum effect on the microswitch. Adjust as needed with the adjustment screws (1+2) on the drive disc.
  • Page 61: Removing The Belt

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Removing the Belt Starting position for removing the belt: • No unit is attached to the machine. • The belt’s forward part is hung around the handle of the safety catch.
  • Page 62: Replacing The Centre Belt

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Hook the spring to the blade brake. Attaching the belt to the forward pulley is described in points 6-8 under Attaching the Cutting Unit, page 63. Replacing the Centre Belt 8009-005...
  • Page 63: The Cutting Unit Components

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS The Cutting Unit Components In the instructions below, a cutting unit with a rear ejector is shown, but the same principles apply to all cutting units unless otherwise stated. The components mentioned are: •...
  • Page 64 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Push the unit in so that the interior plugs (B) touch the bottom of the equipment frame’s grooves. 8009-018 Inner pins Hook in the height adjustment handle’s (E) rear fastener: Move the cutting height lever to the forward position.
  • Page 65: Adjusting The Unit's Parallelism And Cutting Height

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Adjusting the Unit’s Parallelism and Cutting Height When a new cutting unit is attached, you need to adjust the parallelism and cutting height. Starting position: Check the air pressure in the tyres 60 kPa/ 0.6 bar/8.5 PSI.
  • Page 66: Adjusting The Cutting Height Range

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Adjusting the Cutting Height Range Remove the plastic cover over the hydraulic valve block on ProFlex 21 or the plastic cover between the seat and the lever housing on ProFlex 18.
  • Page 67: The Cutting Unit's Service Position

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 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.
  • Page 68: Removing The Cutting Unit

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Removing the Cutting Unit WARNING! Exercise caution. Risk of crush injuries Place the machine on a flat surface. Lock the brake by pressing down the pedal and locking with the push-button.
  • Page 69 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Unhook the height adjustment strut (E) by moving the rear part upwards: Unload the strut if necessary by pulling the frame’s forward section up or down. 8009-169 Height adjustment strut 10. Pull the handle (D) and unit simultaneously.
  • Page 70: Removing The Unit Frame

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Removing the Unit Frame WARNING! Exercise caution. Risk of crush injuries. Starting position for removing the cutting unit frame: Cutting unit removed. Twist the catch out so that the forward 8009-184...
  • Page 71: Removing Blades With Bearings

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Removing Blades with Bearings WARNING! Use gloves and protective eyewear when working with the cutting unit. Combi 112 You can recognise this unit by the fact that the collar on the bearing housing is located on the top of the unit’s cover.
  • Page 72 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Remove the hub using a puller. Do not lose the key that sits between the hub and the shaft. 6012-084 Removing the hub Remove the protective metal washer. 6012-085 Removing the protective washer Mark one end of the shaft.
  • Page 73 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Combi 122 WARNING! Use gloves and protective eyewear when working with the cutting unit. You can recognise this unit by the fact that the collar on the bearing housing is located on the underside of the unit’s cover.
  • Page 74 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Place the bearing housing in a vice and remove the blade and washers. 8009-295 Removing blades Replace the blade bolt in the shaft. Screw it in a few turns and tap or press down the hub.
  • Page 75: Sharpening And Balancing Blades

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Sharpening and Balancing Blades WARNING! Protect your hands with gloves when working with the blades. Remove the blades as described in the previous section. Fix the blade in a vice and sharpen it with a sharpening file.
  • Page 76: Electrical System

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ELECTRICAL SYSTEM Electrical System Wiring Diagram Rider ProFlex 21 2002 8009-356 Electrical system: component locations 8009-186 Wiring diagram Microswitch, hydrostatic transmission Key for colour abbreviations in wiring diagram Microswitch, cutting unit =Red Microswitch, seat...
  • Page 77: Wiring Diagram Rider Proflex 2003

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ELECTRICAL SYSTEM Wiring diagram Rider ProFlex 2003 8009-549 Electrical system: component locations 8009-571 Wiring diagram Microswitch, hydrostatic transmission Key for colour abbreviations in wiring diagram Microswitch, cutting unit =Red Microswitch, seat =Blue Ignition lock...
  • Page 78: Ignition And Starter Lock

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ELECTRICAL SYSTEM Ignition and Starter Lock Remove the right-hand side cover from the lever housing. Release the connector from the ignition lock by pulling it straight down. Remove the ignition key and the rubber seal.
  • Page 79: Replacing The Light Bulbs

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ELECTRICAL SYSTEM Replacing the light bulbs For information about the bulb type, see “Electrical system” on page 5. Unscrew the two screws holding the cover on the power servo housing. Lift up the cover and turn it around the steering shaft.
  • Page 80: Safety System

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ELECTRICAL SYSTEM Safety System Check daily to ensure that the safety system works The rider is equipped with a safety system that by attempting to start the engine when one of the prevents starting or driving under the following conditions is not met.
  • Page 81 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ELECTRICAL SYSTEM Microswitch: Mowing Deck See “Adjusting the Lever Housing” on page 58 for adjustment instructions. 8009-381 Microswitch: Mowing Deck Microswitch: Seat The microswitch is located on the underside of the seat and can be replaced together with the holder without adjustment.
  • Page 82: Hydraulic System

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Hydraulic System Hydraulic Hygiene Keep the hydraulic system clean. Remember to: • Dirt particles that enter the system include: • Thoroughly clean before the top-up cap is - Contaminants entering when topping up opened or any connector loosened.
  • Page 83: Keep The Hydraulic Oil Clean

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Keep the hydraulic oil clean Working Methods Dirt and contaminants are the greatest enemies of Cleanliness also applies to components that have a hydraulic system. Moreover, long work sessions been removed or are to be installed. Keep in mind...
  • Page 84: Component Locations

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Component Locations Power steering Pump in hydrostatic transmission Hydraulic oil filter Lift cylinder Pressure limiting valve Control valve for lift cylinder 8009-357 Hydraulic system, components Pressure to the hydraulic system is provided by the provided via two hoses.
  • Page 85: Bleeding The Hydraulic System

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Bleeding the Hydraulic System See “Bleeding the Hydrostatic and Hydraulic Systems” on page 54. Power Steering See “Removing/Fitting the Power Steering” on page 35. Replacing the Lift Cylinder Lower the cutting unit to the ground.
  • Page 86: Valve Block

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Valve block Removing and Refitting Lower the cutting unit to the ground. Stop the engine. Remove the plastic cover from the hydraulic valve block. Clean in accordance with “Working Methods” on page 82.
  • Page 87 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Control Valve Replacement Lower the cutting unit to the ground. Stop the engine. Remove the plastic cover from the hydraulic valve block. Clean, see “Working Methods” on page 82. Hold the valve block nipples in place and loosen the hydraulic connectors from the control valve.
  • Page 88 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Remove lever housing and lever. By lifting the lever housing and twisting the lever backwards, it can be unhooked from the hole in the slider. 8009-390 Lever housing with lever Remove the plastic plug and unscrew the spring holder with a 12 mm Allen key.
  • Page 89 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM 13. Make sure that the o-ring is not damaged by lubricating the slider and coaxing the slider into place. Insert the slider completely into the valve housing. 14. Fit the spring holder and plastic plug.
  • Page 90 Clean and lubricate with Bad contact on battery poles copper paste Change the fuse Blown fuse Charge battery Localise fault Discharged battery Clean, lubricate with copper Change battery Bad or no earth contact paste. Tighten the earth cable Check cable connections or Defective ignition switch No current to relay replace the switch...
  • Page 91 Clean, adjust or replace the Heavily worn or blocked plug Defective spark plug Change to a spark plug with Incorrect heating value the right heating value Ignition fault Check and adjust the contact Incorrect contact gap Incorrect ignition setting Engine runs unevenly or lacks power Incorrect pre-ignition position Adjust the pre-ignition...
  • Page 92 Drive belt worn or covered in oil Clean or replace the drive belt and dirt Drive belt slips Drive belt’s adjuster pulley Broken spring. Replace defective Lever jams. Lubricate Replace the key. Inspect the axle Engine shaft’s pulley and pulley for damage Replace the key.
  • Page 93 Defective engine Engine speed drops Repair the engine Belt worn or oily Clean or replace the belt Engine slows with heavy load Drive belt for transverse axle Adjust the belt Stop and let the transmission cool Defective transmission Transmission overheated down.
  • Page 94 Change linkage and adjust to right Brake linkage Damaged or incorrectly adjusted setting Brakes do not work satisfactorily Worn or saturated in oil Change brake lining Brake lining Repair or replace the hydrostatic Internal fault on e.g. gear shift axle Hydrostatic transmission transmission The machine moves while in...
  • Page 95 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 114 01 88-26 ´®z+H2r¶6q¨ 2003W14 www.mymowerparts.com...

This manual is also suitable for:

Rider proflex 21