Husqvarna WG 3613 EC, 968999120, 968999365, 968999756, 968999117 Manual

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Operator's Manual

WG4815E/968999120

WG3613E/968999117

WG3613BF/968999365

WG3613EC/968999756

Please read the operator’s manual carefully and make sure	English
you understand the instructions before using the machine.

Contents

INTRODUCTION...............................................................	5
Congratulations...........................................................	5
General........................................................................	5
Driving and Transport on Public Roads.......................	5
Operating.....................................................................	5
Good Service...............................................................	6
Symbols and Decals..................................................	7
Safety.............................................................................	9
General Operation.......................................................	9
Personal Safety Equipment.......................................	11
Slope Operation........................................................	11
Safe Handling of Gasoline.........................................	13
General Maintenance................................................	14
Transport...................................................................	15
Controls.....................................................................	16
Control Locations......................................................	16
Recoil Starter Grip.....................................................	17
Ignition Switch...........................................................	17
Motion control levers.................................................	17
Operator Presence Levers........................................	18
Gear shift lever..........................................................	18
Throttle Control and Choke Control...........................	18
Neutral Bail................................................................	19
Parking Brake..................................................	19
Blade Engagement Lever..........................................	19
Refueling...................................................................	19
Fuel Shut-off Valve....................................................	19
Accessories...............................................................	20
Fuel Tank...................................................................	20
Before Starting..........................................................	21
Starting the Engine....................................................	22
Operation....................................................................	23
Gearbox.....................................................................	25
Running.....................................................................	25
Reverse.....................................................................	26
Operating on hills......................................................	26
Mowing Tips .............................................................	27
Stopping....................................................................	28
Emergency stop..............................................	28
Normal operating stop.....................................	28
Stopping the Engine........................................	28
Manual Transport......................................................	29
Cutting Height Adjustment.........................................	30
Cutting Height Table..................................................	31

Maintenance...............................................................	32
Maintenance Schedule..............................................	32
Ignition System..........................................................	34
Safety System...........................................................	35
Function Check...............................................	35
Engine Cooling Air Intake..........................................	36
Throttle and Choke Cable.........................................	36
Air Filter Maintenance...............................................	37
Replacing the Fuel Filter...........................................	38
Tire Pressures...........................................................	38
Parking Brake............................................................	39
V-belts.......................................................................	39
Deck belt.........................................................	39
Cutting Blades...........................................................	40
Blade replacement..........................................	40
Brake Rod Adjustment...............................................	41
Caster Wheels...........................................................	41
Cleaning....................................................................	41
Hardware...................................................................	41
LUBRICATION.................................................................	42
Lubricating the Cables...............................................	43
Front Wheel Mount..........................................	43
Front Wheel Bearings......................................	43
Throttle and Choke Cable, Lever Bearings.....	43
Engine Oil..................................................................	44
Engine Oil Filter...............................................	44
Changing the Engine Oil.................................	44
Engine Oil Levels............................................	45
Drive Wheel Idle Arm.......................................	46
Coupling..........................................................	46
Mower Deck Lever..........................................	46
Rear Wheel.....................................................	47
Brake Arms......................................................	47
TROUBLESHOOTING.....................................................	48
STORAGE.......................................................................	50
Winter Storage..........................................................	50
Service......................................................................	50
schematics.................................................................	51
TECHNICAL DATA...........................................................	52
Torque Specifications................................................	53
Accessories...............................................................	54
Torque Specifications................................................	54
CONFORMITY CERTIFICATES......................................	55
SERVICE JOURNAL.......................................................	56

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.

WARNING!

Engine exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to the State of California to cause cancer and birth defects or other

reproductive harm.

INTRODUCTION

Congratulations

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. Following the instructions (use, service, maintenance, etc.) is important for the safety of the operator and others. It can also considerably increase the life span of the machine and increase its resale value.

If you sell your machine, be sure to give the operator’s manual to the new owner.

The ﬁnal chapter of this operator’s manual provides a Service Journal. Ensure that service and repair work are documented. A well-kept service journal reduces service costs for the maintenance and affects the machine’s resale value. Take the operator’s manual along when the machine is taken to your dealer for service.

General

In this operator’s manual, left and right, backward and forward are used in relation to the machine’s normal driving direction.

Continuous dedication to improve our products require that speciﬁcations and design are subject to change without notice.

Driving and Transport on Public Roads

Check applicable road trafﬁc regulations before transporting on public roads. If the machine is transported, you must always use approved fastening equipment and ensure that the machine is well anchored. DO NOT operate this machine on public roadways.

Operating

This machine is constructed only for mowing grass on lawns and even ground without obstacles such as stones, tree stumps, etc. The machine can also be used for other tasks when equipped with special accessories provided by the manufacturer. Operating instructions for the accessories are provided with delivery. All other types of uses are incorrect. The manufacturer’s directions concerning operation, maintenance, and repairs must be carefully followed.

Lawn mowers and all power equipment, can be potentially dangerous if used improperly. Safety requires good judgement, careful use in accordance with these instructions and common sense.

The machine must only be operated, maintained, and repaired by persons familiar with the machine’s special characteristics and who are also knowledgeable about the safety instructions. Use only approved repair parts to maintain this machine.

Accident prevention regulations, other general safety regulations, occupational safety rules, and trafﬁc regulations must be followed without fail.

Unauthorized modiﬁcations to the design of the machine may absolve the manufacturer from liability for any resulting personal injury or property damage.

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INTRODUCTION

Good Service

Husqvarna’s products are sold through out 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.

When you need spare parts or support in service questions, warranty issues, etc., please consult the following professional:


This Operator’s Manual belongs to the machine with	Engine	Transmission
the manufacturing number:

Manufacturing Number

The machine’s manufacturing number can be found on the printed plate affixed to the left in the engine compartment. Stated on the plate, from the top are:

•The machine’s type designation (I.D.).

•The manufacturer’s type number (Model).

•The machine’s serial number (Serial no.)

Please have the type designation and serial number available when ordering spare parts.

The engine’s manufacturing number is stamped on a barcode decal. The decal is placed on the left side of the crankcase.

The plate states:

•The engine’s serial number (E/NO).

•The engine’s type designation (Code)

Please have these available when ordering spare parts.

6 - Husqvarna

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.

IMPORTANT INFORMATION

Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx xxxxxxxxx. xx xxxxxxxx xxxx xxxxxx.

Used in this publication to notify the reader of a risk of material damage, particularly if the reader should neglect to follow instructions given in the manual. Used also when there is a potential for misuse or misassembly.








Fast	Slow	Choke	Fuel	Warning!	CE conformity
					marking. Only for
					European market

Battery acid is corrosive, explosive and flammable	Warning! Rotating blades,	Do not touch
	keep away from the	rotating parts
	discharge deck

Use protective glasses

Use protective gloves

Husqvarna-7

symbols and decals

Read	Shut off engine and	Keep a safe	Use on slopes	No passengers
Operator’s	remove key before	distance from	no greater
Manual	performing any	the machine	than 10°
	maintenance or repair work

Whole body

Severing of fingers

Do not open or

Careful backing up,

Careful going

exposure to

and toes

remove safety

watch for other

forward, watch for

thrown objects

shields while

people

other people

engine is running

Moving sharp blades under cover

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SAFETY

WARNING!

THIS CUTTING MACHINE IS CAPABLE OF AMPUTATING HANDS AND FEET AND THROWING OBJECTS. FAILURE TO OBSERVE THE FOLLOWING SAFETY INSTRUCTIONS COULD RESULT IN SERIOUS INJURY OR DEATH.

These instructions are for your safety. Read them carefully.

General Operation

•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, wire, etc., which could be picked up and thrown by the blades.

•Be sure the area is clear of bystanders before operating. Stop machine if anyone enters the area.

•Always look down and behind during reverse maneuvers. Look for both large and small obstacles.

•Never direct discharged material toward anyone. Avoid discharging material against a wall or obstruction. Material may ricochet back toward the operator. Stop the blades when crossing gravel surfaces.

•Do not operate machine without the entire grass catcher, discharge guard, or other safety devices in place and working

•Slow down before turning.

•Never leave a running machine unattended.

•Disengage blades when not mowing. Shut off engine and wait for all parts to come to a complete stop before cleaning the machine, removing the grass catcher, or unclogging the discharge chute.

•Operate machine only in daylight or good artificial light.

WARNING!

This symbol means that important safety instructions need to be emphasized. It concerns your safety.

8011-630

Read the operator’s manual before starting the machine

8011-631

Clear the area of objects before mowing

Husqvarna-9

SAFETY

•Do not operate the machine while under the influence of alcohol or drugs.

•Watch for traffic when operating near or crossing roadways.

•Only allow responsible adults, who are familiar with the instructions, to operate the machine.

•Never take passengers. The machine is only intended for use by one person

•Use extra care when loading or unloading the machine into a trailer or truck.

•Always wear eye protection when operating machine.

•Anyone who operates this machine must first read and understand this Operation Manual. Local laws may regulate the age of the user.

•Keep machine free of grass, leaves or other debris buildup which can touch hot exhaust or engine parts and burn. Do not allow the mower deck to plow leaves or other debris which can cause buildup to occur. Clean any oil or fuel spillage before operating or storing the machine. Allow machine to cool before storage.

8011-632

Never take passengers

WARNING!

Engine exhaust and certain vehicle components contain or emit chemicals considered to cause cancer, birth defects, or other reproductive system damage. The engine exhaust contains carbon monoxide, which is a odorless, colorless, poisonous gas. Do not use the machine in enclosed spaces.

10 - Husqvarna

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 that you have first aid equipment close at hand when using the machine.

•Never use the machine when barefoot. Always wear protective shoes or boots,

preferably with steel toe caps.

• Always wear approved protective glasses or a full visor when assembling or driving.

• Always wear gloves when handling the blades.

•Never wear loose clothing that can get caught in moving parts.

• Use ear protectors to avoid damage to hearing.

Slope Operation

Slopes are a major factor related to loss of control or machine tip-over accidents, which can result in severe injury or death. Operation on all slopes requires extra caution. If you cannot reverse up the slope or if you feel unsure, do not mow it.

•Mow up and down slopes (10 degrees maximum), not across.

•Watch for holes, ruts, bumps, rocks, or other hidden objects. Uneven terrain could overturn the machine. Tall grass can hide obstacles.

•Choose a low ground speed so that you will not have to stop while on the slope.

•Do not mow on wet grass. Tires may lose traction.

•Avoid starting, stopping, or turning on a slope. If the tires lose traction, disengage the blades and proceed slowly straight down the slope.

•Keep all movement on the slopes slow and gradual. Do not make sudden changes in speed or direction, which could cause the machine to roll over.

8011-670a

Personal protective equipment

8011-634

Mow up and down, not side to side

WARNING!

Do not drive up or down hills with slopes greater than 10 degrees. Do not drive across any slopes.

Husqvarna-11

SAFETY

•Use extra care while operating machine with grass catchers or other attachments; they can affect the stability of the machine.

•Do not use on steep slopes.

•Do not try to stabilize the machine by putting your foot on the ground.

•Do not mow near drop-offs, ditches, or embankments. The machine could suddenly roll over if a wheel is over the edge or if the edge caves in.

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.

•Before and while backing, look behind and down for small children.

•Never carry children, even with the blades shut off. They may fall off and be seriously injured or interfere with safe machine operation.

•Never allow children to operate the machine.

•Use extra care when approaching blind corners, shrubs, trees, or other objects that may block your view of a child.

12 - Husqvarna

8011-635

Be extra cautious when driving on slopes

8011-636

Never allow children to operate the machine

8011-633

Keep children away from the work area

SAFETY

WARNING!

The engine must not be started when the driver’s floor plate or any protective plate for the mower deck’s drive belt is removed.

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.

•Never store the machine or fuel container where there is an open flame, spark, or pilot light such as on a water heater or other appliance.

•Before you begin refueling, minimize the risk of static electricity by touching a metal surface.

•Never fill containers inside a vehicle or on a truck or trailer bed with plastic liner. Always place containers on the ground away from the vehicle when filling.

•Remove gas-powered equipment from the truck or trailer and refuel it on the ground. If this is not possible, refuel such equipment with a portable container, rather than from a gasoline dispenser nozzle.

•Keep the nozzle in contact with the rim of the fuel tank or container opening at all times until fueling is complete. Do not use a nozzle lock-open device.

•If fuel is spilled on clothing, change clothing immediately.

•Never overfill fuel tank. Replace gas cap and tighten securely.

•Do not start the engine near spilled fuel.

•Never use gasoline as a cleaning agent.

•If leaks arise in fuel system, engine must not be started until problem has been resolved.

•Check the fuel level before each use and leave space for the fuel to expand, as the heat from the engine and the sun may otherwise cause the fuel to expand and overflow.

8011-637

Never fill the fuel tank indoors

WARNING!

The engine and the exhaust system become very hot during operation.

There is risk for burns if touched.

Allow engine and exhaust system to cool at least two (2) minutes before refueling.

8011-777

Do not smoke when using the machine

Husqvarna-13

SAFETY

General Maintenance

•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. Repair, if necessary, before restarting.

•Never make any adjustments or repairs with the engine running.

•Check grass catcher components and the discharge guard frequently and replace with manufacturer’s recommended parts, when necessary.

•Mower blades are sharp. Wrap the blade or wear gloves, and use extra caution when servicing them.

•Check brake operation frequently. Adjust and service as required.

•Maintain or replace safety and instruction labels, as necessary.

•Do not modify safety equipment. Check regularly to be sure it works properly. The machine must not be driven with defective or unmounted protective plates, protective cowlings, safety switches, or other protective devices.

•Do not change the settings of governors and avoid running the engine with overly high engine speeds. If you run the engine too fast, you risk damaging the machine components.

•Ensure that nuts and bolts, especially the fastening bolts for the blade attachments, are properly tightened, torqued and that the equipment is in good condition.

•Do not change the settings of governors and avoid running the engine with overly high engine speeds. If you run the engine too fast, you risk damaging the machine components.

8011-638

Never drive the machine in an enclosed space

WARNING!

Use protective glasses for maintenance work.

14 - Husqvarna

	SAFETY
•	Use protective goggles.
• Ensure that the fuel filler cap is mounted
	tightly and no flammable substances are
	stored in an open vessel.
• Never use the machine indoors or in spaces
	lacking proper ventilation. The exhaust
	fumes contain carbon monoxide, an
	odorless, poisonous, and lethal gas.
• Stop and inspect the equipment if you run
	over or into anything. If necessary, make
	repairs before starting.
• Never make adjustments with the engine
	running.
• The machine is tested and approved only
	with the equipment originally provided or	8011-639
	recommended by the manufacturer. Only use	Clean the machine regularly
	approved repair parts for the machine.

•The blades are sharp and can cause cuts and gashes. Wrap the blades or use protective gloves when handling them.

•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. 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.

•Check and abide by local traffic regulations before transporting the machine on any road.

•Do not tow this machine, it may cause damage to the drive system.

Husqvarna-15

CONTROLS

This operator’s manual describes the Husqvarna Walk-

Behind Mower. The machine is fitted with a Kawasaki four-stroke overhead valve engine.

Transmission from the engine is made via two V-belts, one for each wheel. Using the left and right steering controls, the speed of the rear wheels is regulated for steering the machine.

Control Locations

1	9	10	8	7

1.	Recoil Starter Grip	6.	Throttle/Choke Control
2.	Ignition Switch	7.	Neutral Bail
3.	Motion Control Levers	8.	Blade Engagement Lever
4.	Operator Presence Levers	9.	Fuel Shut Off Valve
5.	Gear Shift Lever	10.	Fuel Cap/Tank

16 - Husqvarna

Husqvarna WG 3613 EC, 968999120, 968999365, 968999756, 968999117 Manual

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.

Ignition Switch

The ignition key switch is placed on the control panel.

WARNING!

The machine can turn very rapidly if one steering control is moved much further forward than the other.

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.

In order, for example, to turn right while moving forward, move the right control towards the handle (neutral position). The rotation of the right wheel is reduced and the machine turns to the right.

To stop forward travel pull levers back.

8011-476

Recoil starter grip

8011-475

Ignition key

8011-478

Motion control levers

Husqvarna-17

CONTROLS

Operator Presence Levers

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.

When the blades are engaged or neutral lock bail has not locked the drive levers, one or both levers must be pressed against the handle for the engine to remain running.

Gear shift lever

Gear shift lever has 5 gear speeds. There are also neutral and reverse gears.

Grip the motion control levers before shifting gears. This will clutch the gearbox.

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 the choke position.

Do not use the choke when starting a warm engine.

Throttle Control

The throttle control regulates the engine speed and thereby the rate of rotation of the blades, assuming the control for engaging the mower deck is pulled forward.

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.

18 - Husqvarna

8011-478

Motion control levers

8011-482

Gear shift lever in the neutral position

8061-682

Choke control/throttle control lever

CONTROLS

Neutral Bail

The neutral bail keeps the unit from moving while idling. The bail will lock the drive levers in neutral position and must be activated when starting the engine.

Parking Brake

The parking brake on gear drive machines is applied when neutral bail is in lock position.

Blade Engagement Lever

The blade engagement lever is on the left support by the control panel.

In order to engage the blades, push the lever forward. The blades are disengaged when the lever is pulled backward.

The blade engagement lever needs to be adjusted so the lever does not come in contact with control panel when the lever is in the off position.

Refueling

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.

8011-477

Neutral bail

8011-682

Blade engagement lever

8011-437

Fuel shut off valve - closed (OFF)

Husqvarna-19

CONTROLS

Fuel Tank

The machine has one fuel tank. The tank volume is 5.3 gallons / 20 liters.

The engine should run on a minimum of 87-octane unleaded gasoline (no oil mix). Also see Technical Data concerning methanol and ethanol fuels.

When operating in temperatures below 32° F. (0° C.), use fresh, clean winter grade gasoline to help insure good cold weather starting.

WARNING!

Gasoline is highly flammable. Observe caution and fill the tank outdoors (see the safety instruction).

8011-418

Fuel tank

WARNING!

The engine and the exhaust system, become very hot during operation.

Risk for burns if touched.

Allow engine and exhaust system to cool at least two (2) minutes before refueling

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.

Accessories

For mulching, there is a BioClip attachment available. This is mounted underneath the mower deck and consists of control plates and BioClip blades.

IMPORTANT INFORMATION

Experience indicates that alcohol blended fuels (called gasohol, ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before storage of 30 days or longer. Drain the gas tank, start the engine and let it run until the fuel lines and carburetor are empty. Use fresh fuel the next season. See Storage Instructions for additional information. Never use engine or carburetor cleaners in the fuel tank or permanent damage may occur.

20 - Husqvarna

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