Husqvarna R112C Workshop Manual
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Husqvarna R112C Workshop Manual

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Workshop manual
R112C, R112C5, R115C
English
1342 - 002 -

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Summary of Contents for Husqvarna R112C

  • Page 1 Workshop manual R112C, R112C5, R115C English 1342 - 002 -...

  • Page 2: Table Of Contents

    Contents 1 Introduction 8 Function overview 1.1 General..............3 8.1 Product overview R112C, R115C......16 1.2 Document description..........3 8.2 Product overview R112C5........17 1.3 Target group............3 8.3 Serial numbers on the product......17 1.4 Revisions..............3 8.4 Engine..............17 1.5 Safety..............3 8.5 Transmissions............

  • Page 3: Introduction

    1 Introduction 1.1 General This publication covers Husqvarna ride-on lawn mowers R112C, R112C5, R115C from and including model year 2020. Workshop manuals are available for models that are no longer sold. 1.2 Document description This manual gives a full description of how to do maintenance and repair on the product.

  • Page 4: Safety

    2 Safety 2.1 Safety definitions • Explosive gases can come from the battery. Do not smoke near the battery. Keep the battery away from Warnings, cautions and notes are used to point out open flames and sparks. specially important parts of the manual. WARNING: Used if there is a risk of injury or 2.4 Risk of sparks death for the operator or bystanders if the...

  • Page 5: Transport Safety

    Clutch (R112C5). 2.6 Transport safety • Use an approved transport vehicle for transportation Choke (For R112C and R112C5). of the product. • A markets national or local regulations can set limit to the transportation of the product.

  • Page 6: To Put Supports Below The Product

    2.8 To put supports below the product WARNING: Always put supports on the 2 sides of the product to make it stable. 1. Park the product on a hard and level ground. To remove the 2. Remove the cutting deck. Refer to cutting deck on page 9 .

  • Page 7: Prepare And Do Servicing On The Product

    3 Prepare and do servicing on the product 3.1 Pre delivery inspection Complete the sales certificate and the customer records. Write the serial number in the operator's manual and confirm the delivery service in the service book. 1342 - 002 - Prepare and do servicing on the product - 7...

  • Page 8: Assembly 4.1 Battery

    Charge the battery at 12V, maximum 3A for 4 hours. 1. Put the seat in the frame. Servicing Use a Husqvarna battery charger. Refer to 2. Install the 2 screws (A). tools on page 15 . 4.2 To install the steering wheel 1.

  • Page 9: To Remove The Cutting Deck

    3. Push the cutting deck in and make sure that the 7. Attach the drive belt as given in the illustration. guide bolts are put into the grooves on the equipment frame. 4. Align the pipes on the cutting deck with the pipes on the equipment frame.

  • Page 10: To Do A Check Of The Engine Oil Level

    4. Put the lift lever for the cutting deck in operation 9. For : Hold the cutting deck with 2 hands and pull it position. out until it stops. 5. Release the clip and remove the drive belt cover. 10. Lift the equipment frame lock to vertical position. WARNING: The lock mechanism can cause injury to fingers if you do not operate it carefully.

  • Page 11: To Fill Fuel

    3. Loosen the dipstick and pull it out. The engine runs on gasoline with a minimum octane rating of 91 RON (87 AKI), not mixed with oil. We recommend biodegradable alkylate gasoline. Do not use gasoline that contains more than 10% ethanol. •...

  • Page 12: Function Test

    5 Function test 5.1 Operation conditions These conditions are necessary to start the engine: • The parking brake is applied. • The cutting deck is lifted. The engine must stop in these situations: • The parking brake is not applied and the operator lifts from the seat.

  • Page 13: Maintenance

    6 Maintenance 6.1 Maintenance schedule for the service center 1. PREPARE THE PRODUCT First servicing Maintenance interval in hours Do a check of the battery. Do a check of the blades. Do a check of the belts and pulleys. Do a check of the steering chain of the inner side of the frame tunnel. Do an inspection, lubricate and adjust all wires.
  • Page 14 4. CUTTING EQUIPMENT First servicing Maintenance interval in hours Clean the outer and inner surfaces of the cutting deck and the cutting deck covers. Do a check of and adjust the cutting height. 5. LAST INSPECTION AND DOCUMENTATION First servicing Maintenance interval in hours...

  • Page 15: Servicing Tools

    7 Servicing tools 7.1 Servicing tools Punch kit 535 41 32-01 Battery charger (EU) 580 35 52-01 Tachometer 502 71 14-01 1342 - 002 - Servicing tools - 15...

  • Page 16: Function Overview

    8 Function overview 8.1 Product overview R112C, R115C 1. Type plate 2. Lever to engage or disengage the drive 3. Battery 4. Throttle control/choke control 5. Ignition lock 6. Lift lever for the cutting deck 7. Rearward pedal 8. Forward pedal 9.

  • Page 17: Product Overview R112C5

    8.2 Product overview R112C5 1. Type plate The type designation and serial number are necessary to complete an order for spare parts. 2. Battery 3. Throttle control/choke control 4. Lever to shift gear 5. Ignition lock 6. Lift lever for the cutting deck 7.

  • Page 18: Steering

    The product cuts satisfactorily in small spaces because those positions. of the front attached cutting deck. The hydrostatic transmission in the models (R112C, R115C) gives the operator full control of the product. The operator controls the speed with the forward and rearward pedals.

  • Page 19: Repair Instructions

    9 Repair instructions 9.1 Chassis 9.1.1.3 To remove and install the right fender 1. Remove the seat. Refer to To install the seat on 9.1.1 To remove the covers page 8 . 2. Remove the knob on the throttle lever and height 9.1.1.1 To remove and install the cutting deck cover adjustment lever.
  • Page 20 3. Install in the opposite sequence. 9.1.1.7 To remove the frame tunnel cover 1. Remove the 3 screws. 9.1.1.5 To remove the right footrest plate 1. Remove the knob on the reverse pedal. 2. Lift the frame tunnel cover. To remove and 2.
  • Page 21 6. Remove the battery box. 3. Push the fasteners and remove the cover. 7. Install in the opposite sequence. 9.1.1.12 To remove the engine side covers R115C To remove the 1. Remove the engine cover. Refer to 9.1.1.10 To remove and install the side covers engine cover on page 21 .
  • Page 22 To remove the 1. Remove the engine cover. Refer to engine cover on page 21 . 9.1.2.3 To adjust the throttle cable (R112C, R115C) To remove 2. Remove the engine side covers. Refer to Note: The throttle cable looks different on different the engine side covers R115C on page 21 .
  • Page 23 9.1.3.2 To adjust the parking brake cable (R112C5) a) Remove the spring (A) at the rear end of the parking brake cable. WARNING: An incorrectly adjusted brake can cause decreased brake capacity. 1. Make sure that the brake lever (A) is vertical. If the parking brake lever is not vertical, adjust the brake as follows.
  • Page 24 45 . 8. Remove the transmission belt. Refer to To replace the transmission belt (R112C, R115C) on page 46 . To replace the main 9. Remove the main belt. Refer to belt on page 48 .
  • Page 25 13. Loosen the articulated steering shaft with an M8 9.1.5.2 To replace the articulated steering bearing slide hammer. 1. Disassemble the articulated steering joint. Refer to To disassemble and assemble the articulated steering joint on page 24 . 2. Remove the bearings with a mandrel. Tap the bottom bearing from above and tap the top bearing from below.
  • Page 26 To replace the engine belt on page 45 . Refer to To replace 2. Remove the Transmission belt. Refer to the transmission belt (R112C, R115C) on page 46 . 2. Lubricate the pivoting rear axle with grease. To replace the main 3. Remove the main belt. Refer to belt on page 48 .

  • Page 27: Propulsion System

    To remove 3. Install the pivoting rear axle in the front frame. 3. Remove the right side cover. Refer to and install the side covers on page 21 . 4. Loosen the locknut (A) on the ball joint socket (C). 4.
  • Page 28 9. Disconnect the ground cable and the starter motor clutch cable and the clutch lever is 8–10 mm. cable. 5. Tighten the locknut (B). 9.2.4 To remove and install the engine (R112C) 10. Disconnect the throttle cable. To remove and install 1. Remove the battery. Refer to the battery on page 34 .
  • Page 29 14. Remove the engine. 8. Disconnect the engine pin connector, the ground cable and the starter motor cable. 15. Install in the opposite sequence. 9.2.5 To remove and install the engine (R112C5, R115C) To remove and install 9. Disconnect the throttle cable. 1.
  • Page 30 14. Install in the opposite sequence. To remove 2. Remove the rear engine cover. Refer to 9.2.6 To remove and install the muffler (R112C) the rear engine cover on page 22 . To remove the 1. Remove the engine cover. Refer to To remove 3.
  • Page 31 1. Put a container below the oil drain plug. 2. Remove the dipstick. 3. Remove the drain plug. a) For R112C. 6. Replace the gasket between the muffler and the exhaust pipe. 7. Install in the opposite sequence. 9.2.8 To remove and install the muffler (R115C) To remove the 1.
  • Page 32 8. Let the engine become warm, then make sure that there is no leakage from the oil drain plug. 9.2.10 To replace the air filter (R112C) 1. Open the engine cover. 2. Loosen the knobs that hold the air filter cover and remove the cover.

  • Page 33: Electrical System

    3. Remove the air filter cartridge from the filter housing. 5. Push the air filter cartridge into correct position. 4. Put a new air filter cartridge on the air hose. 6. Attach the air filter cover and tighten the knobs. 9.3 Electrical system 9.3.1 Electrical system overview 1.
  • Page 34 9. Ignition lock 9.3.2 Electrical diagram 9.3.3 To remove and install the battery 4. Remove the battery. WARNING: Obey the safety instructions given Risk of sparks on page 4 . CAUTION: Hold the bolts to prevent strain to the terminals. 1.
  • Page 35 9.3.4 To replace the main fuse 5. Remove the screw that holds the spring and spring washer. 1. Remove the 2 screws and remove the frame cover. 2. Pull the fuse from the holder. 6. Disconnect the cable connections from the OPC. 3.

  • Page 36: Fuel System

    9.3.6 To do a check of the brake pedal microswitch 9.3.8 To remove and install the ignition switch 1. Remove the steering column cover. Refer to 1. Remove the ignition key and the rubber seal. remove and install the steering column cover on 2.

  • Page 37: Hydraulic System

    6. Push the hose clips against the fuel filter. a) For models R112C, R112C5. 9.4.2 To remove and install the fuel tank WARNING: Gasoline is very flammable and Special dangerous to the environment. Refer to safety instructions on page 4 .
  • Page 38 To replace page 47 . 5. Remove the transmission belt. Refer to the transmission belt (R112C, R115C) on page 46 . 4. Remove the brake cable spring (A). 6. Remove the hydrostatic transmission cable. Refer to To replace the hydrostatic transmission cable on page 40 .
  • Page 39 11. Install in the opposite sequence. 9.5.4 Hydrostatic transmission cable 7. Remove the clutch spring. 9.5.4.1 To adjust the hydrostatic transmission cable (R112C, R115C) 1. Remove the engine side cover on the right side of To remove the engine the rear carriage. Refer to side covers R115C on page 21 .
  • Page 40 9.5.4.2 To replace the hydrostatic transmission cable 5. Cut the cable tie behind the left front wheel. To remove 1. Remove the frame tunnel cover. Refer to the frame tunnel cover on page 20 . 2. Remove the steering column cover. Refer to remove and install the steering column cover on page 19 .

  • Page 41: Cutting System

    8. Connect the front end of the new hydrostatic 5. Attach the blade, the washer and the bolt. Tighten transmission cable to the rear end of the used the bolt with the correct tightening torque. Refer to Tightening torques on page 54 . hydrostatic transmission cable with a nut.

  • Page 42: Equipment Frame

    7. Remove the protective washer. 4. To balance the blades put a rod horizontally in a vise. 8. Make a mark on one end of the shaft. Push out the 5. Put the center hole of the blade on the end of the shaft with a puller.

  • Page 43: Steering

    9.8 Steering 4. For R115C only: Remove the adjustment nuts (C) on the weight transfer springs (D). 9.8.1 To examine and adjust the steering cables CAUTION: Do not tighten the cables too much. 1. Move the steering cables manually up and down on the steering collar.
  • Page 44 8. Make sure that the cables in the cable pulleys (G) To remove and 1. Remove the side covers. Refer to are in the correct position. install the side covers on page 21 . 9. Make sure that the steering wheel is in the center 2.

  • Page 45: Belts

    8. If it is necessary to replace the bearing, tap out of 10. Pull down the steering column (C) in front of the the bushing (F) from the bearing. frame. 9. Pull up the steering column (C) and move the lower 11.
  • Page 46 4. Remove the spring for the engine belt with a spring 7. Remove the rear end of the engine belt. hook. 8. Install in the opposite sequence. 9.9.3 To replace the transmission belt (R112C, 5. Remove the screw and the belt tensioner. R115C) To remove the 1.
  • Page 47 6. Remove the rear end of the transmission belt. 5. Loosen the spring for the transmission belt tensioner with a spring hook. 7. Remove the front end of the transmission belt. 6. Remove the tension pulley screw (A) and the tension pulley (B).
  • Page 48 6. Remove the engine belt. Refer to engine belt on page 45 . To replace 7. Remove the transmission belt. Refer to the transmission belt (R112C, R115C) on page 46 . 8. Remove the chain from the lever. 48 - Repair instructions 1342 - 002 -...
  • Page 49 12. Remove the main belt. 6. Pull out the belt from the front of the product. 7. Install in the opposite sequence. 13. Install in the opposite sequence. 9.9.6 To replace the equipment belt To remove the 1. Remove the cutting deck. Refer to cutting deck on page 9 .

  • Page 50: Troubleshooting

    10 Troubleshooting 10.1 Troubleshooting schedule Fault Possible cause Steps Troubleshooting Procedure The start motor Cutting deck Make sure that the lift lever is in the top position. Move the lift lev- does not start lowered. er to the top po- when the key sition if it is nec- switch is turned...
  • Page 51 Fault Possible cause Steps Troubleshooting Procedure The start motor Wiring fault. Do a check that the yellow cable to the engine gets Repair the cable operates cor- voltage from the battery when the key switch is in ig- or replace the rectly but the nition position.

  • Page 52: Technical Data

    Use Husqvarna SAE 10W-40 oil for best performance. If that oil is not available, use an equivalent 10W-40 oil with class API SJ or API SL. If the product is operated below -10° C a SAE 5W-20 with class API SJ or API SL...
  • Page 53 R112C R112C5 R115C Max. reverse speed, km/h Electrical system Type 12V, negative earthed 12V, negative earthed 12V, negative earthed Battery 12V, 20Ah 12V, 20Ah 12V, 20Ah Spark plug Husqvarna HQT-9 Champion XC92YC Champion XC92YC Electrode gap, mm/inch 0.75/0.030 0.75/0.030 0.75/0.030...

  • Page 54: Tightening Torques

    11.2 Tightening torques R115C R112C R112C5 Tightening torques Steering drive 5-10 Nm / 3.5-7 lb ft 5-10 Nm / 3.5-7 lb ft 5-10 Nm / 3.5-7 lb ft Steering cable pulley 20-30 Nm / 14-21 lb ft 20-30 Nm / 14-21 lb ft...
  • Page 55 1342 - 002 - Technical data - 55...
  • Page 56 1142613-26 2020-11-10...

This manual is also suitable for:

R112c5R115c

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