Husqvarna WH4817EFQ2, WH5219EFQ manual Ignition System

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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.

1.Remove the ignition cable boot and clean around the spark plug.

2.Remove the spark plugs with a spark plug socket wrench.

3.Check the spark plugs. Replace the spark plug if the electrodes are burned or if the insulation is cracked or damaged. Clean the spark plug with a steel brush if it is to be reused.

4.Measure the electrode gap with a gapping tool. The gap should be 0.030” (0.75 mm). Adjust as necessary by bending the side electrode.

5.Reinsert the spark plugs, turning by hand to avoid damaging the threads.

6.After the spark plug is seated, tighten it using a spark plug wrench so that the washer is compressed. Used spark plug should be turned 1/8 of a turn from the seated position. New spark plug should be turned 1/4 a turn from the seated position.

7.Connect the ignition cable.

IMPORTANT INFORMATION

Fitting the wrong spark plug type can damage the engine.

Inadequately tightened spark plugs can cause overheating and damage the engine. Tightening the spark plugs too hard can damage the threads in the cylinder head.

8011-054

Measure the electrode gap

English-38

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Contents WH4817EFQ/968999252 WH5219EFQ/968999253 Page Contents OPERATOR’S Manual Mower WH4817EFQ WH5219EFQEnglish-2 Introduction IntroductionGood Service Manufacturing NumberSymbols and Decals Symbols and DecalsXxxxxxx xxxx xxxxxxxx xxx Xxxx xxxxxx Keep a safe Safety Instructions Safety InstructionsGeneral Use Age of the user Do as follows Driving on SlopesDo not Children Maintenance Risk of sparking Use protective glasses at maintenance work Transport Customer responsibilitiesControls Control LocationsGround Speed Lever Ignition SwitchChoke Control Operator Presence Lever Throttle ControlNeutral Bail Blade Engagement SwitchParking Brake Hour Meter Motion control leversTracking Knob RefuelingFuses Fuel Shut-off ValveClose fuel valve at the end of each mowing job Lifting Lever for the Mower Deck Pump release valvesAccessories Operation OperationTraining To move forward and backwardBefore Starting Starting the EngineNeutral lock bail, locked position RPM to maximum To start an engine with a weak battery Running ReversingTo operate on hills Mowing TipsClean mower deck after each use Emergency stop StoppingNormal operating stop Stopping the Engine Adjustment of cutting height Wheel Motor AdjustmentMoving Machine by Hand Floating deck machinesMaintenance MaintenanceMaintenance Schedule English-36 Battery To clean or replace battery and terminalsIgnition System Checking the Safety System Functional checkChecking and Adjusting the Choke Cable Checking and Adjusting Throttle CableChecking the Engines Cooling Air Intake Replacing the Air Filter Checking the Fuel Pump’s Air Filter Replacing the Fuel FilterChecking Tire Pressures Checking the V-belts Deck beltChecking the Blades Pump beltAdjusting Cutting Height Adjusting the Mower DeckLeveling To adjust anti-scalp rollers Caster Wheels Cleaning and WashingHardware Blade replacement Lubrication LubricationLubrication Schedule Lubricating the Cables Lubricating in Accordance with the Lubrication ScheduleFront Wheel Mount Front Wheel BearingsBelt Adjuster, Mower Deck Throttle and Choke Cables, Lever BearingsEngine Oil Changing the Engine Oil Checking the Oil LevelChanging the Oil Filter Hydraulic System, Oil Level Mower Deck Height AdjusterChanging Oil and Filters Trouble Shooting Guide Trouble Shooting GuideProblem Cause Rich fuel mixture or fuel-air mixture English-57 Service StorageStorage Winter StorageWiring Diagrams Wiring diagramsWiring Diagram Technical Data Technical DataEngine TransmissionTorque Specifications Overall dimensionsConformity Certificates USA requirementsService Journal Service JournalDelivery Service After the First 8 HoursHour Service English-66 English-67 English-68 At Least Once Each Year 110585R0108/10/05

WH4817EFQ2, WH5219EFQ specifications

The Husqvarna WH4817EFQ2 and WH5219EFQ represent a blend of innovation and efficiency in the lawn care sector, specifically designed for homeowners seeking reliable and robust riding lawn mowers. Both models are engineered with user comfort and performance in mind, making them ideal for mid-sized to larger lawns.

Starting with the WH4817EFQ2, this model is equipped with a powerful 17 HP engine, which provides the necessary power to tackle various grass types and terrain conditions. Its 48-inch cutting deck offers a wide cutting path, reducing the number of passes required to maintain a well-groomed lawn. The deck is constructed with high-quality materials for durability and longevity, ensuring that it withstands the rigors of regular use. This model features an ergonomic steering wheel and adjustable seat, enhancing comfort during extended mowing sessions.

On the other hand, the WH5219EFQ boasts a more powerful 19 HP engine, delivering an added boost for more demanding mowing tasks. This model comes with a 52-inch cutting deck, allowing users to cover larger areas efficiently. Both models incorporate advanced cutting technologies, enabling clean and precise cuts that promote healthy grass growth. With adjustable cutting heights, users can customize their mowing based on lawn conditions, ensuring a tailored approach to lawn maintenance.

One of the key features of both the WH4817EFQ2 and WH5219EFQ is the Hydrostatic transmission system, providing smooth and effortless speed control while eliminating the need for gear shifting. This technology enhances maneuverability and makes navigating around obstacles significantly easier. The responsive pedal controls ensure that users can reach desired speeds without sacrificing control.

In terms of maintenance, both models are designed with user accessibility in mind. The removable cutting deck and convenient maintenance points simplify routine upkeep, making it easier to keep the mowers in peak condition. Additionally, both mowers come equipped with LED headlights, allowing users to mow in low-light conditions safely.

In conclusion, the Husqvarna WH4817EFQ2 and WH5219EFQ are designed to offer a powerful, comfortable, and efficient mowing experience. With their robust engines, advanced cutting technology, and user-friendly features, these riding lawn mowers are excellent choices for homeowners looking to maintain an immaculate lawn with ease.
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