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Husqvarna WG4815E, WG3613E Operator's Manual

Walk-behind mower
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Operator´s manual
WG4815E/968999120
WG3613E/968999117
Please read the operator's manual carefully and make sure you
English
understand the instructions before using the machine.

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  Summary of Contents for Husqvarna WG4815E, WG3613E

  • Page 1 Operator´s manual WG4815E/968999120 WG3613E/968999117 Please read the operator’s manual carefully and make sure you English understand the instructions before using the machine.
  • Page 3: Table Of Contents

    OPERATOR’S MANUAL MOWER WG3613E WG4815E Contents Maintenance ............34 Maintenance Schedule ........34 Contents ..............1 Ignition System ..........36 Introduction ............3 Checking the Safety System ......37 Congratulations ...........3 Checking the Engine's Cooling Air Intake ..38 General ...............3 Replacing the Air Filter ........39 Driving and Transport on Public Roads ....3 Replacing the Fuel Filter ........
  • Page 4 WARNING! Failure to follow safe operating practices can result in serious injury to the operator or other persons. The owner must understand these instructions, and must allow only trained persons who understand these instructions to operate the mower. Each person operating the mower must be of sound mind and body and must not be under the influence of any mind altering substance.
  • Page 5: Introduction

    Introduction Congratulations Thank you for purchasing a Husqvarna Walk-Behind Mower. This machine is built for the greatest efficiency and rapid mowing primarily of large areas. Controls in one place and a transmission regulated by steering controls contribute to the machine’s performance.
  • Page 6: Good Service

    INTRODUCTION Good Service Husqvarna’s products are sold all over the world and only in specialized retail stores with complete service. This ensures that you as a customer receive only the best support and service. Before the product is delivered, the machine has, for example, been inspected and adjusted by your retailer, see the certificate in the Service Journal in this Operator’s Manual.
  • Page 7: Symbols And Decals

    SYMBOLS AND DECALS Symbols and Decals These symbols are found on the machine and in the operator’s manual. Study them carefully so that you know what they mean. WARNING! Xxxxxxx xxxx xxxxxxxx xxx x Xxxxx xxxxxx xx. xx xxxxxxxx xxxxx xxx xx. Used in this publication to notify the reader of a risk of personal injury, particularly if the reader should neglect to follow instructions given in the manual.
  • Page 8 SYMBOLS AND DECALS Keep a safe Severing of distance from fingers & toes. the machine. Moving sharp blades Read Rotating under cover Operator´s blades Manual. Whole body Shut off engine exposure to & remove key thrown before objects. performing any maintenance or repair work.
  • Page 9: Safety Instructions

    SAFETY INSTRUCTIONS Safety Instructions These instructions are for your safety. Read them carefully. WARNING! This symbol means that important safety instructions need to be emphasized. It concerns your safety. General Use • Read all instructions in this operator’s manual and on the machine before starting it.
  • Page 10 SAFETY INSTRUCTIONS • Shut off the blades when not mowing. WARNING! • Be careful when turning around fixed Engine exhaust and certain objects, so that the blades do not hit vehicle components contain them. Never drive over foreign objects. or emit chemicals considered •...
  • Page 11: Driving On Slopes

    SAFETY INSTRUCTIONS Driving on Slopes Driving on slopes is one of the operations where the risk is greatest that the driver will lose control or the machine will tip over, which can result in serious injury or death. All slopes require extra caution. If you cannot reverse up a slope or if you feel unsure, do not mow the slope.
  • Page 12: Children

    SAFETY INSTRUCTIONS Children • Serious accidents may occur if you fail to be on guard for children in the vicinity of the machine. Children are often attracted to the machine and mowing work. Never assume that children will stay where you last saw them.
  • Page 13: Maintenance

    SAFETY INSTRUCTIONS Maintenance WARNING! The engine must not be started when the protective plate for the mower deck’s drive belt is removed. • Stop the engine. Prevent the engine from starting by removing the spark plug cables from the spark plugs or by removing the ignition key before making any adjustments or performing maintenance.
  • Page 14 • Safety decals should be replaced if they are missing or illegible. Decals can be purchased from your Husqvarna dealer. 8011-639 Clean the machine regularly English-...
  • Page 15: Transport

    (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. A spark arrester for the muffler is available through your authorized Husqvarna dealer. English-...
  • Page 16: Controls

    CONTROLS Controls This operator’s manual describes the Husqvarna Walk-Behind Mowers WG3613E and WG4815E. The machines are fitted with a Kawasaki four-stroke V-Twin engine, for data see “Technical data” on page 55. Transmission from the engine is made via two V-belt, one for each wheel. Using the left and...
  • Page 17: Recoil Starter Grip

    Pull the recoil starter grip slowly until you feel compression, then pull it briskly. Normally this engine will not backfire. If you 8011-476 get backfires, contact your Husqvarna dealer Recoil starter grip for service. 2. Ignition Switch The ignition key switch is placed on the control panel.
  • Page 18: Motion Control Levers

    CONTROLS 3. Motion control levers The machine’s speed and direction are continuously variable using the two motion control levers. When both controls are in the neutral position, the machine stands still. The controls can be locked in neutral position by the Neutral bail By moving both controls an equal amount the machine moves in a straight line forward.
  • Page 19: Gear Shift Lever

    CONTROLS 5. Gear shift lever Gear shift lever has 5 gears speed. There is also a neutral gear and reverse gear. Grip motion control levers before shifting gears. This will clutch the gearbox. 8011-482 Gear drive lever in neutral position 6.
  • Page 20: Throttle Control And Choke Control

    CONTROLS 7. Throttle Control and Choke Control Choke Control The choke control is used for cold starts to provide the engine with a richer fuel mixture. The choke control is combined with the Throttle control. To engage the choke, the throttle control is moved past the max rpm setting to its choke position.
  • Page 21: Refueling

    CONTROLS 9. Refueling The machine has one fuel tank. The tank volume is 5.3 gallons / 20 liters. The engine should be run on a minimum of 87-octane unleaded gasoline (no oil mix). Also see Technical Data concerning methanol and ethanol fuels. WARNING! Gasoline is highly flammable.
  • Page 22: Fuel Shut-Off Valve

    CONTROLS 10. Fuel Shut-off Valve The fuel shut-off valve is placed on the fuel line below the fuel tank. The valve has two positions; ON and OFF. The illustration shows the valve in the closed (OFF) position. IMPORTANT INFORMATION Close fuel valve at the end of each mowing job.
  • Page 23: Operation

    OPERATION Operation WARNING! Be thoroughly familiar with all controls their function and how to operate them before operating the mower. Before Starting • Read the sections “Safety Instructions” on page 7, and “Controls” on page 14, before starting the machine. •...
  • Page 24: Starting The Engine

    OPERATION Starting the Engine WARNING! Never run the engine indoors, in enclosed or poorly ventilated spaces. Engine exhaust fumes contain poisonous carbon monoxide. Move blade engagement lever to the OFF position, so the interlock will allow engine to start. 8011-474 Blade engagement lever Check gear shifter to be sure it is in the neutral position.
  • Page 25 OPERATION Open fuel shut-off valve. 8011-438 Fuel shut-off valve, Open Turn ignition key to ON position. 8011-475 Ignition key Set throttle control and engage the choke (if needed). Do not use choke when the engine is warm. IMPORTANT INFORMATION Do not let recoil cord snap back by itself. This may damage the cord or the recoil starter assembly.
  • Page 26 OPERATION Warm engine momentarily, then disengage the choke until engine runs smoothly, approximately 1/2 throttle. WARNING! clear Be sure all persons are of area before engaging the blades. IMPORTANT INFORMATION To prolong spindle bearing clutch and belt life engage and disengage blades at approximately ½...
  • Page 27: Gearbox

    OPERATION Gearbox The gear drive machines have a 5-speed gearbox. The gear selector is placed under the control panel. Only shift gear when the machine is standing still and on level ground. 8011-482 Gear selector Running Depress one operator presence lever and shift transmission to the desired gear.
  • Page 28: Reversing

    OPERATION Reversing Depress one operator presence lever and shift transmission to the reverse gear. Grip motion control levers before shifting gear. 8011-482 Clutch drive before shifting gear To operate on hills To operate on slopes is a dangerous mowing job. Read the Safety Instructions section “Driving on Slopes”...
  • Page 29 OPERATION • Drive so that clippings are discharged onto the area that has been cut. Have the cut area to the right of the mower. This will result in more even distribution of clippings and a more uniform cut. To avoid clippings spraying on roads etc, mow the first two patterns in opposite direction.
  • Page 30: Stopping

    OPERATION • Hose the mower deck with water after each use. Hose especially underneath. Do not spray high pressure spray directly on top of spindles. • Avoid getting engine too wet. WARNING Never drive the machine on terrain that slopes more than 10 Mow slopes up and down, never side-to-side.
  • Page 31: Stopping The Engine

    OPERATION Stopping the Engine Allow the engine to idle a minute in order to attain normal operating temperature before stopping it, if it has been worked hard. Avoid idling the engine for longer periods, as there is a risk of the spark plugs fouling. When the machine is standing still, set the neutral bail in the lock position.
  • Page 32: Adjustment Of Cutting Height

    OPERATION Adjustment of cutting height The cutting height can be adjusted by three methods: • Moving spacers between the upper side and the lower side of the caster swivel according to "Cutting height table". For instruction, see below. • Moving spacers between the upper side and the lower side of the blades according to "Cutting height table".
  • Page 33 OPERATION Cutting height table Axle Spacers Blade Cutting below spacers height position caster arm under cutter housing 1 1/2" (38 1 3/4" (44 2" (51 mm) 2 1/4" (57 2 1/2" (64 1 3/4" (44 2" (51 mm) 2 1/4" (57 2 1/2"...
  • Page 34 OPERATION Axle Spacers Blade Cutting below spacers height position caster arm under cutter housing 3 1/4" (83 3 1/2" (89 3 3/4 (95 4" (102 mm) 4 1/4" (108 3 1/2" (89 3 3/4" (95 4" (102 mm) 4 1/4" (108 4 1/2"...
  • Page 35: Moving Machine By Hand

    OPERATION Moving machine by Hand In order for the machine to be moved with the engine turned off, make sure the gear shift lever is in the neutral position and the motion control levers are not in the locked position. The locked position is used when the machine is parked.
  • Page 36: Maintenance

    MAINTENANCE Maintenance Maintenance Schedule The following is a list of maintenance procedures that must be performed on the machine. For those points not described in this manual, visit an authorized service workshop. An annual service carried out by an authorized service workshop is recommended in order to maintain your machine in the best possible condition and to ensure safe operation.
  • Page 37 MAINTENANCE Daily Weekly Maintenance interval mainte- mainte- least in hours nance nance once each Maintenance Page Before After year Check/adjust the cutting height Linkages and adjustments Check throttle and choke cables Clean the air cleaner’s pre-filter (foam) Clean the air cleaner’s filter cartridge (paper filter) Change the engine oil Replace the engine oil filter (every 200 hours)
  • Page 38: Ignition System

    MAINTENANCE Ignition System The engine is equipped with an electronic ignition system. Only the spark plugs require maintenance. For recommended spark plugs, see Technical Data. IMPORTANT INFORMATION Remove the ignition cable boot and Fitting the wrong spark plug type can clean around the spark plug.
  • Page 39: Checking The Safety System

    MAINTENANCE Checking the Safety System The machine is equipped with a safety system that prevents starting or driving under the following conditions. The engine can only be started when: The blades are disengaged. The neutral bail must be in the locked position.
  • Page 40: Checking The Engine's Cooling Air Intake

    Check that the engine responds to throttle increases and that a good engine speed is attained at full throttle. If doubts arise, contact the Husqvarna service workshop. If adjustments are necessary, they can be made as follows for the cable: Loosen the clamping screw for the cable’s outer casing.
  • Page 41: Replacing The Air Filter

    MAINTENANCE Replacing the Air Filter If the engine seems weak or runs unevenly, the air filter may be clogged. If run with a dirty air filter, the spark plugs can become fouled disrupting operation. For this reason, it is important to replace the air filter regularly (see the heading Maintenance Schedule for the proper service interval).
  • Page 42: Replacing The Fuel Filter

    MAINTENANCE Replacing the Fuel Filter Replace the line-mounted fuel filter every 100 hours (once per season) or more regularly if it is clogged. Replace the filter as follows: Move the hose clamps away from the filter. Use flat-nosed pliers. Pull the filter loose from the hose ends. Push the new filter into the hose ends.
  • Page 43: Checking The Parking Brake

    MAINTENANCE Checking the Parking Brake Visually check that no damage is found on the neutral bail. Perform a test drive and check that there is sufficent braking action. To adjust the handbrake, contact the service workshop if you are uncertain. Set the neutral bail in the neutral lock position.
  • Page 44: Checking The Blades

    MAINTENANCE Checking the Blades In order to attain the best mowing effect, it is important that the blades are well sharpened and not damaged. : Bent or cracked blades or blades with large nicks must be replaced. Check the blade mounts. IMPORTANT INFORMATION The replacement or sharpening of blades 8011-604...
  • Page 45: Cleaning And Washing

    MAINTENANCE Cleaning and Washing Regular cleaning and washing, especially under the mower deck, will increase the machine’s lifespan. Make it a habit to clean the machine directly after use, before the dirt sticks. Do not spray high pressure water directly on the top of the deck. 8011-639 Cleaning Caster Wheels...
  • Page 46: Blade Replacement

    Center hole Tighten torque 90 ft/lb (122 Nm). Star Cutter housing IMPORTANT INFORMATION Blade bolt (special) Special blade bolt is heat treated. Replace Blade attachment, principal with a Husqvarna bolt if required. Do NOT use lower grade hardware than specified. English-...
  • Page 47: Lubrication

    LUBRICATION Lubrication Lubrication Schedule 12/12 1/52 1/365 100h 200h 300h 8011-685 Lubrication schedule Lubricate with oil can Lubricate with grease gun 12/12 Every year 1/52 Every week Level check Oil change 1/365 Every day Filter change General Remove the ignition key to prevent unintentional movements during lubrication. When lubricating with an oil can, it should be filled with engine oil.
  • Page 48: Lubricating The Cables

    LUBRICATION Lubricating the Cables If possible, lubricate both ends of the cables and move the controls to end stop positions when lubricating. Refit the rubber covers on the cables after lubrication. Cables with sheaths will bind if they are not lubricated regularly.
  • Page 49 LUBRICATION 4. Changing the Oil Filter Drain the engine oil in accordance with the description in Engine Oil/Change Engine Oil. Disassemble the oil filter. If necessary, use a filter remover. Wipe new, clean engine oil on the seal of the new filter. Mount the filter by hand with + 3/4 turn.
  • Page 50 LUBRICATION Checking the Oil Level Check the oil level in the engine when the machine is standing level and the engine is stopped. Remove the dipstick, wipe it clean, and then replace it. The dipstick should not be screwed into place.
  • Page 51 LUBRICATION 6. Drive wheel idle arm, right and left Lubricate with a grease gun, one zerk for each arm, until the grease is forced out. Use only good quality molybdenum disulphide grease. Grease from well-known brand names (petrochemical companies, etc.) usually maintains a good quality.
  • Page 52 LUBRICATION 9. Rear wheel Lubricate with a grease gun, one zerk for each rear wheel, until the grease is forced out. Use only good quality molybdenum disulphide grease. Grease from well-known brand names (petrochemical companies, etc.) usually maintains a good quality. 8011-716 IMPORTANT INFORMATION Lubricating rear wheel...
  • Page 53: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE Trouble Shooting Guide Problem Cause The engine will not start. • The control for engaging the mower deck is in engaged position. • The motion controls are not locked in the neutral position. • Spark plug wires off. •...
  • Page 54 TROUBLE SHOOTING GUIDE The engine overheats. • Clogged air intake or cooling fins. • Engine overloaded. • Poor ventilation around engine. • Defective engine speed regulator. • Too little or no oil in the engine. • Defective spark plugs. The machine moves slowly, unevenly, •...
  • Page 55: Storage

    Handle the fuel with care. It is Always use genuine Husqvarna spare parts. very flammable and careless An annual check-up at an authorized service use can cause serious personal workshop is a good way to ensure that your injury and property damage.
  • Page 56: Wiring Diagrams

    WIRING DIAGRAMS Wiring diagrams 8011-684 English-...
  • Page 57: Technical Data

    TECHNICAL DATA Technical data WG3613E WG4815E Engine Manufacturer Kawasaki Kawasaki Type FH381V FH430V Power 13 hp / 9.5 kW 15 hp / 11 kW Spark plugs / gap RCJ8Y/ .030” / 0.75 mm RCJ8Y/ .030” / 0.75 mm Oil capacity excl filter 1.6 qt / 1.5 liters 1.6 qt / 1.5 liters Oil capacity incl filter...
  • Page 58: Torque Specifications

    TECHNICAL DATA WG3613E WG4815E Overall dimensions Weight 445 lbs / 202 kg 470 lbs / 213 kg Base maschine lenght 66” / 168 cm 66” / 168 cm Base machine width 37” / 94 cm 49” / 125 cm Base machine height 42”...
  • Page 59: Conformity Certificates

    CONFORMITY CERTIFICATES Conformity Certificates USA requirements Labels are placed on the engine and/or in the engine compartment stating that the machine will fulfill the requirements. This is also applicable to special requirements for any of the states, (Californian emission rules etc.). Do not remove any of these labels. Certificates can also be supplied with the machine at delivery or written in the Engine manual.
  • Page 60: Service Journal

    SERVICE JOURNAL Service Journal Action Date, mtr reading, stamp, sign Delivery Service Mount the caster wheels. Adjust the tire pressure of all wheels to 1 bar (15 PSI). Check that the right amount of oil is in the engine. Adjust the position of the steering controls. Fill with fuel and open the fuel tap.
  • Page 61: 25-Hour Service

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign 25-Hour Service Check the fuel pump’s air filter. Check the tire pressures. Check/clean the engine’s cooling air intake. Clean the air cleaner’s pre-filter (foam). Check the cutting deck. English-...
  • Page 62: 50-Hour Service

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign 50-Hour Service Perform the 25-hour service. Clean/replace the air cleaner’s filter cartridge (paper filter) (shorter intervals for dusty operating conditions). Lubricate the front wheel bearings. Lubricate the throttle/choke cable. Check/adjust the parking brake. English-...
  • Page 63: 100-Hour Service

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign 100-Hour Service Perform the 25-hour service. Perform the 50-hour service. Change engine oil. Check whether the engine oil filter needs changing (every 200 hours). Clean/replace the spark plugs. Replace the fuel filter. Clean the cooling fins on the engine and transmission.
  • Page 64: 300-Hour Service

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign 300-Hour Service Inspect the machine. Come to agreement with the customer as to which additional work is to be carried out. Perform the 25-hour service. Perform the 50-hour service. Perform the 100-hour service. Clean the combustion chamber and grind the valve seats.
  • Page 65: At Least Once Each Year

    SERVICE JOURNAL Action Date, mtr reading, stamp, sign At Least Once Each Year Clean the engine’s cooling air intake (25 hours). Replace the air cleaner’s pre-filter (foam) (300 hours). Replace the air filter’s paper cartridge (200 hours). Change the engine oil (100 hours). Replace the engine oil filter (200 hours).
  • Page 66 106457R01 08/11/05...