Husqvarna WHF6123 / 966947007, WHF5223 / 966947006 Ignition System, Safety System, Function Check

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MAINTENANCE

Ignition System

The engine is equipped with an electronic ignition system. Only the spark plugs require maintenance.

1.For recommended spark plugs, see Technical Data.

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

3.Remove the spark plug with a spark plug socket wrench.

4.Check the spark plug. Replace the spark plug if fouled, 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.

5.Measure the electrode gap with a gapping tool. The gap should be .030" (0.75 mm). Adjust as necessary by bending the side electrode.

6.Reinsert the spark plug, turning by hand to avoid damaging the threads.

7.After the spark plug is seated, tighten it using a spark plug wrench so that the washer is compressed. A used spark plug should be turned 1/8 of a turn from the seated position. A new spark plug should be turned a ¼ turn from the seated position.

8.Reconnect the ignition cable.

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.

If the machine starts when one of these conditions is not met, turn the machine off and repair the safety system before using the machine again.

Function Check

Check the function of the safety electrical system on a regular basis.

1.Engine must stop if blades are engaged without operator presence levers held down.

2.Engine must stop if the speed control is taken out of the start position without holding down operator presence levers.

3.Engine must not start unless blades are off and the speed control is in the start position.

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

2

1

8062-004

1.Blade engagement control

2.Speed control lever Check the safety system

WARNING!

Do not operate the mower if the interlock safety system allows operating or starting in any unsafe condition.

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Contents Operators Manual Page Contents Page General IntroductionCongratulations Driving and Transport on Public RoadsGood Service Manufacturing NumberSymbols and decals Safety General OperationPersonal Safety Equipment Slope OperationChildren Safe Handling of Gasoline General Maintenance Use protective glasses for maintenance workTransport Controls Control LocationsIgnition Switch Drive LeversOperator Presence Levers Ground Speed ControlChoke Control Tracking Adjustment Throttle ControlNeutral Lock Blade Engagement Control Service MeterParking Brake OptionalFuel Shut-off Valve Fuel TankOperation Before StartingStarting Engine Turn ignition key to on position Running ReverseOperating on Hills Mowing Tips Normal operating stop StoppingEmergency stop Stopping EngineShut OFF the fuel valve Cutting Height Adjustment Daily Weekly Maintenance interval Least Hours Once MaintenanceMaintenance Schedule Maintenance Before AfterHusqvarna-29 Safety System Ignition SystemFunction Check Engine Cooling Air Intake Throttle CableChoke Cable Air Filter Heavy duty air filterDust cap Replacing the Fuel Filter Tire Pressures Deck beltReplacing belt Cutting Blades Under side of rear deck CleaningHardware WashingMaintenance GeneralFront Wheel Mount LubricationCables Front Wheel BearingsEngine Oil Filter Engine OilEngine Oil Levels Troubleshooting Problem CauseTroubleshooting Service Winter StorageLower Harness LackUpper Harness Technical Data Torque Specifications Standard HardwareMetric Standard Hardware USA requirements CE requirementsAfter the First 8 Hours Service JournalDelivery Service Action Date, mtr reading, stamp, signHour Service Inspect the machine. Come to agreement with the customer At Least Once Each Year Husqvarna-53 Page Page 115 149527 R1 08/15/09

WHF5223 / 966947006, WHF6123 / 966947007 specifications

The Husqvarna WHF6123 and WHF5223 are two innovative products from Husqvarna, known for their advanced features and robust performance. Designed to meet the demanding needs of both professionals and everyday users, these models exemplify Husqvarna's commitment to quality and reliability.

Starting with the WHF6123, this model is equipped with a powerful engine that ensures efficient cutting and high performance. Its 6123cc, 4-stroke engine provides excellent torque and fuel efficiency, making it suitable for a variety of tasks, from heavy-duty domestic projects to professional applications. The WHF6123 features a high-capacity fuel tank that allows for longer operational periods without frequent refueling, enhancing productivity.

Additionally, the WHF6123 has an ergonomic design that prioritizes user comfort. It comes with an adjustable handle that can be customized to fit the user’s height and preference, reducing strain during prolonged use. The lightweight structure, combined with anti-vibration technology, ensures that the device is easy to maneuver, even in tight spaces. This focus on ergonomics is designed to improve the overall user experience, making it easier to tackle even the most challenging jobs.

On the other hand, the WHF5223 stands out with its compact and versatile design. Featuring a 5223cc engine, it balances power and efficiency, making it perfect for those who need a reliable tool for lawn care and maintenance tasks. The WHF5223 is particularly favored for its agility and lightweight nature without compromising on cutting efficiency.

One of the distinguishing features of both models is the inclusion of Husqvarna's proprietary cutting technologies. These technologies enable precise cutting and enhance the longevity of the blades, ensuring that users achieve clean cuts every time. Both models also come with easy-start mechanisms, reducing the effort needed to start the engines and allowing users to get to work faster.

In terms of maintenance, both the WHF6123 and WHF5223 include user-friendly access points for common maintenance tasks, making upkeep simpler and more efficient. Husqvarna’s commitment to sustainability is evident in these models, as they are designed to meet stringent emissions standards, contributing to a healthier environment.

In summary, the Husqvarna WHF6123 and WHF5223 are exemplary products that blend power, efficiency, and user comfort. With advanced features and robust build quality, they cater to both professional and home users looking for reliable performance in various landscaping and gardening tasks. Their advanced technologies and ergonomic designs make them valuable tools in any outdoor maintenance arsenal.
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