Operator Manual WH3616 / 966638601 WH4818 / 966638602 WH5218 / 966638603 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
In order to implement improvements, specifications and designs can be altered without prior notification. Note that no legal demands can be placed based on the information contained in these instructions. Use only original parts for repairs. The use of other parts voids the warranty. Do not modify or install non-standard equipment to the unit without consent from the manufacturer. Modifications to the unit may cause unsafe operations or damage the unit. ©2010 All rights reserved.
Contents INTRODUCTION................................................................ 5 General........................................................................ 5 Driving and Transport on Public Roads....................... 5 Operating..................................................................... 5 Good Service............................................................... 6 Symbols and Decals................................................... 7 General Operation...............................
WARNING! Failure to follow cautious 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.
INTRODUCTION Congratulations Operating Thank you for purchasing a Husqvarna Walk-Behind mower. This machine is built for superior efficiency to rapidly mow primarily large areas. A control panel easily accessible to the operator and a transmission regulated by steering controls both contribute to the machine’s performance. This manual is a valuable document. Read the contents carefully before using or servicing the machine.
INTRODUCTION Good Service Husqvarna’s products are sold throughout 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.
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! Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx xxxxxxxxx. xx xxxxxxxx xxxx xxxxxx. Used in this publication to notify the reader of a risk of personal injury or death, particularly if the reader should neglect to follow instructions given in the manual. Moving sharp blades under cover IMPORTANT INFORMATION Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx xxxxxxxxx.
SAFETY These instructions are for your safety. Read them carefully. General Operation • • • • • • • • • • • • • • • 8 Read, understand, and follow all instructions on the machine and in the manual before starting. Do not put hands or feet near rotating parts or under the machine. Keep clear of the discharge opening at all times. Clear the area of objects such as rocks, toys and wire, which could be picked up and thrown by the blades. Be sure the area is clear of bystanders before operating.
SAFETY Personal Safety Equipment WARNING! When using the machine, approved personal protective equipment (shown in illustrations) shall be used. Personal protective equipment cannot eliminate the risk of injury but it will reduce the degree of injury if an accident does happen. Ask your retailer for help in choosing the right equipment. • • • • • • Make sure first aid equipment is close at hand when using the machine. Never use the machine when barefoot.
SAFETY Children Tragic accidents can occur if the operator is not alert to the presence of children. Children are often attracted to the machine and the mowing activity. Never assume that children will remain where you last saw them. • Keep children out of the mowing area and in the watchful care of a responsible adult other than the operator. • Be alert and turn machine off if a child enters the area.
SAFETY Safe Handling of Gasoline To avoid personal injury or property damage, use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive. • Extinguish all cigarettes, cigars, pipes, and other sources of ignition. • Use only approved gasoline container. • Never remove gas cap or add fuel with the engine running. Allow engine to cool at least two (2) minutes before refueling. • Never fuel the machine indoors.
SAFETY General Maintenance • • • • • • • • • • • • • • • • • 12 Never operate machine in a closed area. Keep all nuts and bolts tight to be sure the equipment is in safe working condition. Never tamper with safety devices. Check their proper operation regularly. Keep machine free of grass, leaves, or other debris buildup. Clean oil or fuel spillage and remove any fuel-soaked debris. Allow machine to cool before storing. If you strike a foreign object, stop and inspect the machine.
SAFETY • • • The mulch blades should only be used in familiar areas when higher quality mowing is desired. Reduce the risk of fire by removing grass, leaves, and other debris that may have accumulated on the machine. Allow the machine to cool before putting it in storage. Regularly clean deck and underside of deck, avoid spraying engine and electrical components with water. Transport • • • The machine is heavy and can cause serious crushing injuries.
CONTROLS This operator’s manual describes the Husqvarna Walk-Behind Mower. The machine is fitted with a Kawasaki four-stroke overhead valve engine. Using the left and right drive levers, the speed of the rear wheels is regulated for steering the machine. Control Locations 13 12 11 9 10 8 7 6 5 4 3 1 2 8062-021 1. Fuel Cap/Tank 2. Throttle Control 3. Choke Control 4. Ground Speed Control 5. Blade Engagement Control 6. Hour Meter (optional) 7. Ignition Switch 14 8. 9. 10. 11. 12. 13.
CONTROLS Recoil Starter Grip IMPORTANT INFORMATION Do not let recoil cord snap back by itself. This may damage the cord or the recoil starter assembly. Pull the recoil starter grip slowly until you feel compression, then pull it briskly. Normally this engine will not backfire. If you get backfires, contact your Husqvarna dealer for service. 8062-006 Recoil starter grip Ignition Switch The ignition key switch is located on the control panel at the lower right.
CONTROLS Operator Presence Switches Located on the handle, the Operator Presence System levers serve as an additional safety feature. An electrical interlock safety system is activated by depressing either one or both of the Operator Presence Levers at the handle grips. Releasing both Operators Presence Levers while mowing or transporting will break the electrical circuit and cause the engine and mower to stop. The mower will not stop immediately after releasing the OP levers and some travel occurs.
CONTROLS Throttle Control The throttle control regulates the engine speed and thereby the rate of rotation of the blades, assuming the blade engagement control is engaged (pulled up). In order to increase or decrease the engine speed, the control is moved forward or backward respectively. Avoid idling the engine for long periods, as there is a risk of the spark plugs fouling. For best mower performance, USE FULL THROTTLE WHEN MOWING.
CONTROLS Parking Brake The parking brake is located behind the right hand tire and is applied by pressing the pedal downwards. To disengage the parking brake, push down and pivot the pedal to the rear. 8062-005 Parking brake Blade Engagement Control The blade engagement control is on the center control panel. In order to engage the blades, pull the control upwards. The blades are disengaged when the lever is pushed down. WARNING! Gasoline is highly flammable.
CONTROLS Fuel Shutoff Valve The fuel shutoff valve is placed on the fuel line below the fuel tank. The valve is on when the turn lever is parallel to the fuel line. The OFF position will have the turn lever running perpendicular to the fuel line. See illustration. WARNING! Fill to bottom of filler neck. Do not overfill. Wipe off any spilled oil or fuel. Do not store, spill or use gasoline near an open flame. 8062-007 Fuel shutoff valve - closed (OFF) Fuel Tank The machine has one fuel tank.
operation Before Starting WARNING! Be thoroughly familiar with control operation and function before using the mower. • Read the sections on Safety and Controls before starting the machine. • Perform the daily maintenance before starting (see Maintenance Schedule). • Check that there is sufficient fuel in the fuel tank. The following conditions must be fulfilled before the engine can be started: • The control for engaging the blades must be in disengaged (down) position.
operation Starting the Engine Open fuel shut-off valve. 8062-040 Fuel shutoff valve - open Turn ignition key to ON position. 8062-003 Ignition key Set throttle control at the lowest position and engage the choke (if needed). Do not use choke when the engine is warm.
operation WARNING! Do not run the engine indoors, in enclosed or poorly ventilated spaces. Engine exhaust fumes contain poisonous carbon monoxide. Confirm that the speed control lever is in the start position. IMPORTANT INFORMATION Do not let the recoil cord snap back by itself. This may damage the cord or the recoil starter assembly. 8062-009 Speed control in the start position Pull the recoil starter grip slowly until you feel compression, then pull briskly.
operation Running Depress one operator presence lever and move the speed control to the desired speed. Pull the blade engagement control upwards. Set the desired rpm with the throttle. The best cutting and bagging is obtained with engine at top rpm. While on level terrain, squeeze both drive levers slightly. Using thumbs, slide each neutral lock out the locked position. Slowly release both drive levers at the same time to begin forward motion.
operation Mowing Tips • • • • • • • • • • • • • • Observe and mark rocks and other fixed objects in order to avoid collisions. Properly level the cutting deck for best mowing performance. The blades should be parallel to the ground or slightly tipped down in the front. Use only sharp blades. Check tire pressure. Different pressure can cause uneven mowing results. Use the left hand side of the deck for trimming. Mow so clippings are discharged onto the area that has been cut.
operation Transport • • • • • • The machine is heavy and can cause serious crushing injuries. Be extra cautious when it is loaded on or unloaded from a vehicle or trailer. Use an approved trailer to transport the machine. Activate the parking brake, turn off the fuel supply, and fasten the machine with approved fastening devices, such as bands, chains, or straps, when transporting. Do not operate this machine on public roadways.
operation Shut OFF the fuel valve. 8062-007 Fuel shutoff valve - closed (OFF) Set the parking brake.
operation Cutting Height Adjustment The cutting height can be adjusted by the following methods: 1. Moving spacers between the upper side and the lower side of the caster swivel according to Cutting Height Table. 2. Rear axle height adjustment according to the following instruction. a. Stop engine and place drive levers and neutral locks in the lock position. Remove spark plug wires from each side of the engine. b. Place a jack under center of rear deck.
operation 8062-041 Cutting Height Table 2 Axle Position Spacer Below Caster Arm Cutting Height A 0 1½" (38mm) 1 2" (51mm) 2 2½" (64mm) 3 3" (76mm) 4 3½" (89mm) 5 4" (102mm) 6 4½" (114mm) 7 5" (127mm) A B B C 1 C D 1. Height selection holes 2. Axle adjustment bolts (remove each side) Rear axle height adjustment IMPORTANT INFORMATION To achieve the best quality cut, the blades should be level with the ground or slightly tipped forward.
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 to maintain your machine in the best possible condition and to ensure safe operation. Read Maintenance in the Safety section.
MAINTENANCE Daily MAINTENANCE Before After At least once each year Maintenance interval in hours 25 50 Check/adjust throttle and choke cables ♦ ■ ■ ■ ■ ■ Check the condition of belts, belt pulleys Change the engine oil 1) Replace the engine oil filter Clean/replace the spark plugs Replace the fuel filter Replace the air filter (paper filter) 2) ■ Check the caster wheels (every 200 hours) Replace the air cleaner’s pre-filter 2) (foam) Check/adjust the mower deck Check the engine valve clearance
MAINTENANCE Safety System The machine is equipped with a safety system that prevents starting under the following conditions. The engine can only be started when: 1. the blades are disengaged. 2. the speed control is in the start position. Make daily inspections to ensure that the safety system works by attempting to start the engine when one of the conditions is not met.
MAINTENANCE Tire Pressures All tires should be at 15 psi / 103 kPa / 1 bar. 8062-042 Tire pressures Deck Belt Check every 100 hours of operation. Check for severe cracking and large nicks. NOTE: The belt will show some small cracks in normal operation. Replacing belt Open the belt shield. Use a ratchet with a ½ socket extension on the spring idler arm to relieve the tension on the belt. Slide the belt off the pulley and fully remove the belt. Reverse the procedure for installation.
MAINTENANCE Cutting Blades WARNING! Blades are sharp. Protect your hands with gloves and/or wrap blades with a heavy cloth when handling. To achieve the best mowing effect, the blades must be well sharpened and not damaged. Bent or cracked blades or blades with large nicks should be replaced. Damaged blades should be replaced when hitting obstacles that result in a breakdown. Let the service workshop decide whether the blade can be repaired/ ground or must be replaced. Balance the blades after sharpening.
MAINTENANCE Cleaning Under side of rear deck Remove grass and debris. 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. Do not spray hot engine or exhaust. WARNING! Escaping hydraulic oil under pressure can have sufficient force to penetrate the skin, causing serious injury.
MAINTENANCE 8062-018 12/12 Every year Lubricate with grease gun 1/52 Every Week Oil change 1/365 Every day Lubricate with oil can Level check Filter change General Remove the ignition key to prevent unintentional movements during lubrication. When lubricating with an oil can, it must be filled with engine oil. When lubricating with grease, unless otherwise stated, use a high grade molybdenum disulphide grease. For daily use, the machine should be lubricated twice weekly.
LUBRICATION Front Wheel Mount Lubricate with a grease gun, one zerk for each wheel mount, until the grease is forced out. Use only good quality bearing grease. Grease from well-known brand names (petrochemical companies) usually maintains a good quality. Front Wheel Bearings Lubricate with a grease gun, one zerk for each set of wheel bearings, until the grease is forced out. Use only good quality disulphide grease.
TROUBLESHOOTING Problem Engine will not start Engine runs rough Engine seems weak Machine vibrates Cause • Mower deck control is engaged • Speed control not in the start position • Spark plug wire is off • Contamination in the carburetor or fuel line • Fuel shutoff valve is closed • Clogged fuel filter or fuel line • Empty fuel tank • Faulty ignition system • Faulty carburetor • Choke control is pulled out with a warm engine • Clogged fuel filter or jet • Clogged ventilation valve
TROUBLESHOOTING Problem Engine overheats Cause • Clogged air intake • Engine overloaded • Poor ventilation around engine • Defective engine speed regulator • Too little or no oil in the engine • Fouled spark plugs Machine moves slowly, unevenly • Drive belt for the transmission is slack or has come off Mower deck not engaging • Drive belt for the mower deck has come loose • Mower deck control is faulty Uneven mowing results • Tire pressures are uneven • Blades are bent • Blades are dull • Driving spe
storage Winter Storage At the end of the mowing season (or if it will not be in use for longer than 30 days), the machine should be readied for storage. Fuel allowed to stand for long periods of time (30 days or more) can leave sticky residues that can plug the carburetor and disrupt engine function. Fuel stabilizers are an acceptable option as regards to the sticky residues that can occur during storage. Add stabilizer to the fuel in the tank or in the storage container.
schematics Lower Harness Harness Adapter 40
schematics Upper Harness 41
TECHNICAL DATA WH3616 WH4818 Engine Manufacturer Kawasaki 1, 2) Kawasaki 1, 2) FS FS 16 hp* / 12 kW 18 hp* / 13 kW Min 87 octane unleaded (Max ethanol 10%, Max MTBE 15%) Min 87 octane unleaded (Max ethanol 10%, Max MTBE 15%) 6 gallons / 22.7 liters 6 gallons / 22.7 liters Cooling Air cooled Air cooled Air filter Dual Element Dual Element 12V 12V Recoil Recoil Hydraulic Pump Hydraulic Pump Speed forward 0-7.0 mph / 0-11.3 km/h 0-7.0 mph / 0-11.3 km/h Speed reverse 0-2.
TECHNICAL DATA WH5218 Engine Manufacturer Kawasaki Type FS Power Fuel 18 hp* / 13 kW Min 87 octane unleaded (Max ethanol 10%, Max MTBE 15%) Fuel tank capacity 6 gallons / 22.7 liters Cooling Air cooled Air filter Dual Element Alternator 12V Starter Recoil Transmission Transmission Hydraulic Pump Speed and direction controls Speed forward 0-7.0 mph / 0-11.3 km/h Speed reverse 0-2.5 mph / 0-4.0 km/h Brakes Mechanical parking brake Front caster tires, smooth tread 9 x 3.
TECHNICAL DATA HEX HEAD CAP SCREWS The torque values shown should be used as a general guideline when specific torque values are not given. U.S. Standard Hardware Shank Size (Diameter in inches, fine or coarse thread) Grade SAE Grade 5 SAE Grade 8 Flangelock Screw w/Flangelock Nut Size ft./lbs Nm ft./lbs Nm ft.
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, (California 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. Take care of them as they are valuable documents.
SERVICE JOURNAL Date, mtr reading, stamp, sign Action Delivery Service q q q q q q q Mount caster wheels Adjust tire pressure of all wheels according to Technical Data Check that the right amount of oil is in the engine Adjust the position of the drive levers Fill with fuel and open the fuel shutoff valve Start the engine Check that there is drive to both wheels Check the mower deck adjustment Check: q q q q q q q q The safety switch for the blade engagement lever The safety switch for the neutral loc
SERVICE JOURNAL Action Date, mtr reading, stamp, sign After the first 8 hours Change the engine oil q 25-Hour Service Check the tire pressures Check/clean the engine’s cooling air intake Clean the air cleaner’s pre-filter (foam) Check the cutting deck q q q q 47
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 front wheel bearings Lubricate throttle/choke cable Check/adjust the parking brake q q q q q 100-Hour Service Perform the 25-hour service Perform the 50-hour service Change the engine oil Check engine oil filter (every 200 hours) Clean/replace the spark plugs Clean the cooling fins on
SERVICE JOURNAL Action Date, mtr reading, stamp, sign 300-Hour Service Perform the 25-hour service Perform the 50-hour service Perform the 100-hour service Check/adjust the mower deck Clean the combustion chamber and grind the valve seats Check the engine valve clearance Replace the air cleaner’s pre-filter (foam) q q q q q q q 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 Change t
SERVICE JOURNAL Action 50 Date, mtr reading, stamp, sign
P/N 115 392127R1 09/14/10
