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Husqvarna Rider ProFlex 21 II Workshop Manual

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

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Summary of Contents for Husqvarna Rider ProFlex 21 II

  • Page 1 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Workshop manual Rider ProFlex 21 II English www.mymowerparts.com...
  • Page 2 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Svenska – www.mymowerparts.com...

  • Page 3: Table Of Contents

    Removing the BioClip Plug (Combi) ....70 General .............21 Pulse Air Valve Intake Filter ......71 Serial Number ...........21 Wiring Diagram for the Rider ProFlex 21 II ..73 Engine ...............22 Ignition and Starter Lock ........74 Steering .............23 Chronometer ............ 74 Driving ...............24...

  • Page 4: Safety Instructions

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SAFETY INSTRUCTIONS Safety Instructions General Instructions This workshop manual is written for personnel with general knowledge about the repair and service of riders. The workshop where the rider is to be repaired must be equipped with safety equipment in accordance with local bylaws.

  • Page 5: 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. 8009-284 506 57 00-01 Wheel remover. 506 66 48-01 Engine belt pulley remover. 506 56 76-01 Allen key 5/16" for loosening the engine belt pulley’s Allen screw (Kawasaki).
  • Page 6 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SPECIAL TOOLS English- www.mymowerparts.com...

  • Page 7: Specifications

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 SPECIFICATIONS Specifications Dimensions: Rider ProFlex 21 II Length, base machine 2,120 mm/6.96 ft with tow hook Length with Combi 122 2,550 mm/8.37 ft with tow hook Width, base machine 900 mm/2.95 ft Width with Combi 122 1,330 mm/52.4"...

  • Page 8: Tightening Torques

    Distance between the belt adjuster lever and the belt guide, disengaged unit: 17 ± 5 mm/7/16" ± 3/16" Play Brake cable: 1 mm/0.040" Differential lock cable, Rider ProFlex 21 II: 0 mm Cable, hydrostatic pedals: 0 mm Lock, mechanical lifting lever 2 mm/1/16"...

  • Page 9: Delivery And Dealer Service

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Delivery and Dealer Service Delivery Service Fill the battery with battery acid and charge for four hours. Fit the steering wheel, seat and, where applicable, other components. Attach the cutting unit.

  • Page 10: 25-Hour Service

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE 25-Hour Service Clean the air cleaner’s pre-filter (Oil-foam element). (Shorter intervals for dusty operating conditions.) Clean the engine’s cooling air intake and the transmission’s air intake. Clean the fuel pump’s air filter (for dusty operating conditions).

  • Page 11: At Least Once Each Season

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE At Least Once Each Season Clean the engine’s cooling air intake (25 hours). Replace the air cleaner’s pre-filter (Oil-foam) (300 hours). Replace the air filter’s paper cartridge (200 hours).

  • Page 12: Service Schedule

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Service Schedule The following is a list of maintenance procedures that must be performed on the rider. Most of the points that are not described in this workshop manual are found in the operator’s manual.
  • Page 13 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 engine Clean thoroughly around the...
  • Page 14 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 Clean the pulse air filter...

  • Page 15: Delivery Procedures

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Delivery Procedures To our dealers A well performed delivery service is the first step towards a functioning after-sales market. An after-sales market that functions benefits everyone: • The customer will be satisfied with their machine. They know where to turn in order to get help if problems arise.
  • Page 16 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Packaging and Unpacking The machine is normally packed using special packaging when delivered from the factory. This packaging is comprised of a wood base with a strong cardboard top section, all held together with plastic wrapping.

  • Page 17: 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. Contact a doctor as soon as possible.

  • Page 18: 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 19: 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. Transmission cover 6008-209 Check that there is oil in the transmission’s oil...

  • Page 20: 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 62. Test Running Fill with petrol. The engine should be run on a minimum of 87-octane unleaded petrol (not mixed with oil).

  • Page 21: Engine Speed Regulator

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE Check that the cutting unit works and that no unusual sounds are heard Using the lever, the cutting height can be adjusted in 7 different positions. 8009-327 Cutting height setting Check that the hydraulic cutting unit lift works.
  • Page 22 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DELIVERY AND DEALER SERVICE English- www.mymowerparts.com...

  • Page 23: Design And Function

    This publication describes the Husqvarna Rider ProFlex 21 II. There are special workshop manuals for older machine types. Husqvarna Riders are a series of large capacity riders. They are available in several sizes, ranging from the smallest, the Rider 11, to the largest, the Rider ProFlex 21 II.

  • Page 24: Engine

    8009-206 The transmission’s serial number Engine The Husqvarna Rider ProFlex II series comprises professional machines with twin-cylinder, air-cooled Kawasaki engines. Major engine repairs are not described in this workshop manual. This information can be found in Kawasaki’s manuals, which contain detailed information about adjusting and repairing the engines. These manuals can be ordered from an authorised service workshop.

  • Page 25: Steering

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DESIGN AND FUNCTION Steering All mowers in the Rider series have articulated steering. The ProFlex 21 II is fitted with hydraulic power steer- ing. The steering force from the steering wheel is transmitted to the rear carriage via a chain and cables. This makes steering the rider both easy and precise.

  • Page 26: Driving

    The speed is regulated continuously with the foot pedals, forwards and reverse. The Rider ProFlex 21 II has a differential lock that enables the rear wheels to be run locked. The differential lock is engaged and disengaged with a pedal found on the left side of the machine.

  • Page 27: Cutting Unit

    The entire Rider series is equipped with a front-mounted cutting unit in order to mow efficiently even in confined areas. The Rider ProFlex 21 II is delivered with the Combi 122 cutting unit. Older cutting unit types cannot be attached unless the drive belt is changed.
  • Page 28 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 DESIGN AND FUNCTION The cutting height is adjusted using the lever that is attached to the shaft with a joint and a spring. The same shaft holds the adjuster for the cutting height range. See Adjusting the Cutting Height Range on page 63.

  • Page 29: 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 30 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 31: Fitting The Engine

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 12. Remove the engine fixtures, two on each side of the engine, and remove the engine from the rider. The illustration shows the right side with hydraulic cylinder fixture excluded. For the left side, see the illustration under Mounting.
  • Page 32 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Place the cables and hydraulic hoses in the cable holder. Fit the cable holder and belt guide. Adjust the belt guide against the lower belt in the belt pulley as needed.
  • Page 33 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Press the fuel hose into place against the fuel pump and attach the hose clamp. 8009-191 Fuel pump Screw the cable from the starter to the start relay into place. Attach the engine’s electrical connectors.

  • Page 34: Fuel Tank

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Fuel tank Removal WARNING! Petrol is highly flammable and environmentally hazardous. Exercise caution to avoid fire and spillage. Place a suitable container to collect the petrol. The tank holds about 17 litres (4.5 US Gal).

  • Page 35: 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 36: 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 37: Replacing The Steering Cables

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Power steering and steering cables 8009-300 Replacing the Steering Cables Loosen the steering cables’ rear fixture (1). Remove the frame plate. Loosen the steering cables’ front fixture (2) by the steering chain (3) and pull out the steering cables through the frame.

  • Page 38: Removing/Fitting The Cable Pulley

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Steering cables and cable pulley 8009-358 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 39: 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 40: 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 41: 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 42 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 10. Cleaning, see Working Methods on page 78. Loosen the hydraulic hoses from the hydrostatic transmission. Hydraulic hoses 8009-366 11. Loosen the steering cables (1) and remove the steering collar. 12. Remove the belt pulley (B). Move the lower part forwards, the upper part backwards, and force the pulley out.

  • Page 43: Removing The Pendulum Shaft

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 15. Remove the upper bearings from above; if they are stuck tap them from below. 16. Fit the new bearings and mount the articulated steering in the reverse order that it was removed.

  • Page 44: Replacing Bushings

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 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 underside), and remove the cable from the underside of the shaft.

  • Page 45: 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 46 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Remove the nut (2), lift off the washer and fan from the ingoing shaft. Remove the oil tank and hose from the hydrostatic transmission. Remove the clutch control and its spring.

  • 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 Remove the insulation tape from the shaft and repeat the entire procedure as needed for the other shaft. 10. Replace the washer, spacing tube, key, hub, circlip, hubcap, and rear wheel.

  • 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. Cut the plastic tie 8009-204 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. Remove the hydrostatic transmission cable. 6019-009 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. Front clamp 6019-024 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 11. Check the settings of the neutral position contact. See Microswitch: Neutral Position on page 76. 12. Fasten the hydrostatic transmission cables with a plastic tie. Fastening with a plastic tie 6019-019 13.

  • 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 77. Transmission cover 6008-209 Check the oil level in the hydrostatic transmission.

  • 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 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: 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. Remove the plastic cover over the hydraulic valve block. Plastic cover 8009-374 Set the adjustment screws (1 and 2) on...
  • Page 59 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS 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. Repeat step 5 if needed.

  • Page 60: 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 61: 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 61. Replacing the Centre Belt Blade brake spring...

  • Page 62: 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 63 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. Inner pins 8009-018 Hook in the height adjustment handle’s (E) rear fastener: Move the cutting height lever to the forward position.

  • Page 64: 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 65: 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. Plastic cover 8009-374 Raise or lower the entire cutting range by screwing the nuts up or down.

  • Page 66: 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 67: 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 68 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. Height adjustment strut 8009-169 10. Pull the handle (D) and unit simultaneously.

  • Page 69: 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 fastener can be lifted from the cutting...

  • Page 70: Removing Blades With Bearings

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Removing Blades with Bearings WARNING! Combi 122 Use gloves and protective eyewear You can recognise this unit by the fact that when working with the cutting unit. the collar on the bearing housing is located on the underside of the unit’s cover.
  • Page 71 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. Removing blades 8009-295 Replace the blade bolt in the shaft. Screw it in a few turns and tap or press down the hub.

  • Page 72: 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 73: Pulse Air Valve Intake Filter

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS Pulse Air Valve Intake Filter Cleaning the filter Fold the seat back, open the engine cover. Loosen the four snap catches, remove the cover, and remove the filter. Blow the filter clean with compressed air.
  • Page 74 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 REPAIR INSTRUCTIONS English- www.mymowerparts.com...

  • Page 75: Wiring Diagram For The Rider Proflex 21 Ii

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

  • Page 76: 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 contact box from the ignition lock by pulling it straight down. Remove the ignition key and the rubber seal.

  • Page 77: Safety System

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ELECTRICAL SYSTEM Safety System The rider is equipped with a safety system that prevents starting or driving under the following conditions. It should only be possible to start the engine when the cutting unit is in its raised position and the hydrostat pedals are in the neutral position.
  • Page 78 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 ELECTRICAL SYSTEM Microswitch: Seat The microswitch is located on the underside of the seat and can be replaced together with the holder without adjustment. The switch inside the holder cannot be replaced alone as it is glued into place.

  • Page 79: 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: • Thoroughly clean before the top-up cap is opened or any connector loosened. • Use clean containers when topping up the oil.

  • Page 80: Hydraulic Oils

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Hydraulic Oils The oil is as important as every other part of the hydraulic system. It has been noted that about 70% of all hydraulic problems are caused by the use of unsuitable oil types, which contain dirt or other contaminants, to fill the system.

  • Page 81: Component Locations

    For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Component Locations 8009-357 Hydraulic system, components Power steering Pump in hydrostatic transmission Hydraulic oil filter Lift cylinder Pressure limiting valve Control valve for lift cylinder Pressure to the hydraulic system is provided by the hydrostatic pump. A pressure limiting valve limits the maximum system pressure to about 45 bar/630 PSI.

  • Page 82: 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 53. Power Steering See Removing/Fitting the Power Steering on page 35. Replacing the Lift Cylinder Lower the cutting unit to the ground.

  • Page 83: 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 78.
  • Page 84 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 78. Hold the valve block nipples in place and loosen the hydraulic connectors from the control valve.
  • Page 85 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM Remove the lever housing and lever. By lifting the lever housing and twisting the lever backwards, it can be unhooked from the hole in the slider. Lever housing with lever 8009-390 Remove the plastic plug and unscrew the spring holder with a 12 mm Allen key.
  • Page 86 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 HYDRAULIC SYSTEM 12. Thread on the spacing ring (length 7mm/0.28") on the slider. 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.
  • Page 87 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Poor contacts on the battery Clean and apply copper- based lubricant terminals Replace fuse Charge the battery Blown fuse Localise cause of fault Discharged battery Clean, apply copper-based Replace the battery Poor or no earth contact...
  • Page 88 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Clean, adjust, or replace Extremely worn or blocked plug Spark plug defective Replace with spark plug Incorrect thermal value with right thermal value Ignition fault Check and adjust Incorrect electrode gap electrode gap...
  • Page 89 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Drive belt worn or coated with oil Clean or replace drive belt and dirt Drive belt slips Spring off. Replace. Drive belt idler not working Lever arm jamming. Lubricate. Replace key. Inspect shaft and Engine shaft’s belt wheel...
  • Page 90 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Engine fault Repair the engine Engine speed falling Belt worn or oily Clean or replace belt The machine slows down Drive belt for transmission shaft under heavy loads Adjust belt tension Stop and allow the transmission...
  • Page 91 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 Replace linkage and adjust to Brake linkage Damaged or wrongly adjusted right setting Brake does not work satisfactorily Worn out or soaked in oil Replace brake pad Brake pad Internal fault, for example, gear...
  • Page 92 For Husqvarna Parts Call 606-678-9623 or 606-561-4983 114 01 05-26 ´+H*T¶6D¨ 2002W22 www.mymowerparts.com...

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