HUSQVARNA LC347IVX Service Manual
Introduction to Husqvarna lc347ivx service manual
The Husqvarna LC347iVX is a compact, battery-powered lawn mower designed for residential trimming and lightweight mowing tasks. It features a brushless DC motor, a robust battery system, and a cutting deck engineered for even grass dispersion and efficient bagging. When approaching maintenance, it is important to understand that the LC347iVX relies on precise torque delivery and battery management to maintain performance. Regular inspection of cutting blades, motor housing, and electrical connections helps prevent performance loss and potential downtime. Knowledge of its discharge path, blade shimming, and deck alignment will contribute to optimal mowing results and prolong the tool’s service life.
Key specifications include battery voltage and runtime under typical load, blade dimensions, deck width, and recommended maintenance intervals. The mower is designed to operate within specific environmental conditions, and adherence to these guidelines preserves safety and efficiency. Understanding the electrical subsystem, including battery cells, charging circuit, and fuse protection, is essential for diagnosing common faults without risking user safety. This manual provides a structured approach to preventative maintenance, routine checks, and repair procedures that can be performed by a capable end user with basic hand tools. Always consult the manufacturer’s safety advisories before performing any service work to avoid electric shock or injury.
Safety and protective equipment required
Before performing any maintenance on the Husqvarna LC347iVX, ensure that the tool is powered down and isolated from the battery to prevent accidental starts. Wear appropriate PPE such as cut-resistant gloves, eye protection, and sturdy footwear to protect against sharp blades and debris. Use a stable work surface and secure the mower to prevent movement during blade inspection or deck servicing. Verify that the battery is cool before handling to minimize the risk of thermal burns or thermal runaway in rare battery faults. Keep a fire extinguisher rated for electrical fires within reach when working with lithium-ion battery systems as an additional precaution against thermal events.
When inspecting the cutting blade, remove the battery and ensure the blade retention hardware is clean and properly torqued to the manufacturer’s specifications. Inspect the blade for nicks, cracks, or warping, and replace if damage is evident, as a damaged blade can cause vibration, imbalance, or decreased cutting performance. Electrical safety requires that all connectors be dry and free of corrosion; use contact cleaner if needed and ensure connectors seat fully. Never attempt to service the mower with wet hands or in wet conditions, as water ingress can create short circuits or electrical shock hazards. Proper lockout procedures should be followed to ensure the tool cannot be powered on inadvertently during maintenance activities.
Initial inspection and preparation
Unpacking and identifying parts: Begin by carefully opening the packaging and laying out all components on a clean, level surface to prevent loss or damage. Compare each item against the included parts list to verify that every component is present, including the mower deck, body assembly, battery (if applicable), user manual, safety shields, and any assembly hardware. Inspect所有 items for any signs of shipping damage such as scratches, dents, or loose fittings, and set aside anything that appears compromised for closer examination or replacement before proceeding. Use the manufacturer’s part numbers to ensure compatibility when ordering replacements, and consider photographing the contents for your records in case of missing or damaged parts. Keep fasteners organized in labeled containers to facilitate a smooth assembly process and reduce the risk of incorrect installation later on.
Pre start checks and battery handling: Before powering up the lawn mower, perform a thorough pre-start inspection of all critical systems, including safety interlocks, blade engagement mechanisms, ignition (or power switch), and wiring harnesses for signs of wear or corrosion. Verify that the cutting blade is securely fastened, balanced, and free of nicks or cracks that could cause vibration or imbalance during operation. If the unit is battery-powered, observe proper battery handling procedures: wear gloves and safety glasses, ensure the battery is correctly seated, and check electrolyte levels or state of charge as specified by the manual. Make sure the battery connectors are clean and securely attached, and inspect the charging system for any frayed cables or damaged ports. Never attempt to operate the equipment with a damaged battery or loose electrical connections, as this can create a fire hazard or lead to operational failure.
Preparation and workspace setup: Create a well-lit, flat work area with ample space to maneuver the mower during assembly and testing. Gather the necessary hand tools and torque specifications as listed in the manual, and organize them within easy reach to minimize interruptions. Confirm that all safety devices, such as blade guards and safety switches, are installed and functioning properly. Read through the operating manual to understand the proper startup procedure and any model-specific precautions. If you are new to this equipment, consider performing a dry run of the startup sequence without engaging the blade to familiarize yourself with the mower’s behavior and control layout before actual use.
Environmental and safety considerations: Ensure the work area is free of debris, pets, and bystanders to prevent accidents during testing. If you are storing the mower for an extended period, follow the manufacturer’s guidelines for battery maintenance, fuel stabilization (if applicable), and cleaning procedures to prevent build-up and corrosion. Use appropriate PPE such as gloves, eye protection, and sturdy footwear during assembly and inspection. Dispose of any packaging materials and damaged components according to local regulations, and document any deviations from the standard procedure to address with customer support or service records. A careful, methodical approach during initial inspection lays the groundwork for safe and reliable operation in the field.
Maintenance and service requirements
Regular maintenance is essential to ensure reliable starting, efficient cutting, and long service life for the Husqvarna LC347IVX. Establish a consistent schedule that aligns with operating hours and environmental conditions. Begin with a thorough visual inspection before each use, checking for loose fasteners, damaged guards, and signs of wear on the deck and drive system. Keep a log of service dates and performed tasks to track maintenance intervals and plan upcoming procedures. Adhering to a disciplined maintenance routine helps prevent unexpected downtime and preserves overall performance.
The powerhead should be maintained according to the manufacturer’s guidelines, with particular attention to lubrication, filter condition, and fuel handling. Use clean, fresh fuel and the recommended oil mixture, especially if the machine requires a specific two-stroke or four-stroke protocol. Inspect the cooling fins and engine housing for debris buildup that could impede airflow and cause overheating. Periodically remove dust and grass clippings from cooling areas using a soft brush or compressed air, taking care to follow safety procedures to avoid injury. Proper fuel storage, including keeping containers sealed and away from heat sources, is essential to reduce mixture degradation and engine damage.
Efficient operation hinges on clean air delivery and a dependable ignition system. Inspect the air filter regularly and replace it when it appears dirty or is visibly damaged. For high-dust environments, more frequent filter checks are warranted. Remove the spark plug, inspect the electrode gap, and replace the spark plug according to the service interval or if fouling, wear, or glazing is detected. When reinstalling, apply a light amount of anti-seize compound to the threads if specified by the manual and torque to the recommended specification. Always verify that the spark plug boot is secure and free of cracks or corrosion to ensure reliable starting.
The cutting deck, drive belt, and safety systems require periodic inspection and adjustment to maintain performance and operator protection. Check the deck for balanced cutting and any signs of warping, and remove obstructions such as twigs or stones that could cause damage during operation. Inspect belts for cracks, fraying, or glazing, and replace them using the manufacturer's recommended parts and procedures. Verify that all safety features, including blade brakes and interlock systems, are functioning correctly before use, and replace any damaged components promptly. Conduct a functional test on a clear, level surface to confirm proper engagement of all controls after maintenance.
Lubrication practices are essential for smooth operation and longevity. Apply manufacturer-approved lubricants to drive components, pivot points, and linkages as specified, avoiding over-lubrication that can attract dirt. Keep all moving parts covered and protected during storage to minimize corrosion. When performing maintenance outdoors, use appropriate PPE and follow safe handling procedures for fuels and solvents. After completing maintenance, perform a brief test run to verify that all systems respond correctly, and listen for unusual noises that could indicate misalignment or worn parts. By following these detailed maintenance steps, you can extend the service life of the LC347IVX while maintaining peak performance and safety.
The recommended service intervals should be recorded and adjusted based on usage patterns and environmental exposure. In dusty or sandy conditions, service more frequently to prevent abrasive wear and clogging of filters and cooling systems. For communal or commercial use, consider establishing a quarterly professional inspection to verify belt tension, blade balance, and overall machine integrity. Keeping a clean, organized workshop with the proper tools and spare parts readily available will streamline maintenance tasks and reduce downtime. Consistent adherence to maintenance guidelines will help ensure safe operation, efficient performance, and a longer lifespan for the Husqvarna LC347IVX.
Engine and fuel system service
The engine and fuel system function as an integrated team that powers the outdoor equipment with reliability and efficiency. Begin with a careful inspection of all visible components, including spark plug boots, air intake, fuel lines, and fuel filter. Look for signs of wear, cracking, or leakage, and replace any damaged parts before proceeding. When removing any covers or shields, secure the machine on a flat, stable surface and ensure the ignition switch is in the off position to prevent accidental cranking. Maintain a clean work environment to avoid introducing dirt into the fuel system, which can lead to degraded performance or engine damage.
During the inspection process, verify that the fuel you are using matches the manufacturer’s specifications for octane and ethanol content. Ethanol-blended fuels can cause extended restoration times and varnish buildup in carburetors if not used promptly. If fuel degradation is suspected, drain the fuel tank and lines, then replace with fresh, properly mixed or pre-diluted fuel as required by the engine design. Always dispose of old fuel in accordance with local regulations and clean any spillages immediately to prevent fire hazards and environmental contamination.
Carburetor adjustment and maintenance require meticulous attention to the air-fuel mixture and idle settings. Start with a cold engine and connect the appropriate tools, such as a screwdriver with a secure grip and the correct size for the carburetor screws. Turn fuel and air screws in small increments, noting performance changes in acceleration, idle stability, and smoke production. If the engine exhibits hard starting, irregular idle, or excessive rich or lean running, document the symptoms and adjust within the manufacturer’s specified ranges. After any adjustment, recheck the overall engine performance through a brief test run under load to confirm the settings are stable and repeatable.
When performing maintenance on the carburetor, inspect the float, needle valve, and jets for signs of varnish, dirt, or wear. A carburetor in need of cleaning may present with sputtering, hesitation, or lack of power at mid to high throttle. Use approved cleaners and follow proper disassembly procedures, keeping small parts organized to avoid misassembly. After cleaning, reinstall components in the exact orientation described by the service manual and ensure gaskets and seals meet the required thickness and material integrity to prevent air leaks. Reassemble with attention to torque specifications and test with a diagnostic run that includes gradual throttle changes and a load test to ensure consistent performance across operating conditions.
Engine starting and troubleshooting steps should begin with a secure, charged battery if applicable and a fresh spark plug that matches the specified heat range. Check the ignition system for proper spark, and inspect the kill switch wiring to ensure it opens the circuit when engaged. If starting problems persist, verify that the fuel system is primed correctly and that the air filter is clean and unobstructed. Use a systematic approach to diagnosing fuel delivery, compression, and ignition issues, recording observations and any unusual noises or vibrations. When a fault is diagnosed, replace or repair the faulty component using OEM-approved parts and verify that the engine starts smoothly, runs without stalls, and maintains consistent power output under typical operating conditions.
The electrical system and controls of the Husqvarna LC347IVX are designed to provide reliable operation under demanding outdoor conditions. A robust wiring harness carries power and signals from the battery to the engine, accessories, and safety interlocks. When inspecting the electrical system, start at the main battery connection point, checking for clean, tight terminals and no signs of corrosion or damage to the cables. Ensure that all connectors are fully seated and that insulation is intact along the entire harness path to prevent moisture ingress and short circuits. Regular inspection should include inspection of routing to avoid chafing against moving parts or sharp edges, which can compromise insulation over time. Any signs of pinched wires, melted insulation, or loose connections should be addressed immediately to prevent intermittent operation or failure of safety features.
The battery and charging system are critical for reliable startup and consistent performance. Verify the battery type specified for the LC347IVX and confirm that it is charged to the recommended voltage with an appropriate charger. During maintenance, measure the battery voltage with the engine off to establish a baseline, and re-check after charging to ensure proper recharge. Inspect the charging system components, including the voltage regulator and alternator or charging coil, for signs of overheating, wear, or physical damage. Replace any worn belts or pulleys that could affect charging efficiency and monitor the electrolyte level if using a non-sealed lead-acid battery. Maintain clean battery terminals and apply appropriate protective spray to minimize corrosion, and always disconnect the negative terminal first when performing any electrical work.
Safety switches and operator controls are integral to protecting the operator and ensuring correct mower operation. Test each safety interlock regularly to confirm that the engine shuts down when the control levers are in the disengaged position or when the seat is unoccupied, depending on the model’s configuration. Inspect the ignition switch, PTO switch, and blade engagement mechanisms for secure mounting, proper indentation, and reliable feedback to the operator. Replace any faulty switches promptly and verify that wiring harness connections to these switches are secure and free from moisture, dirt, or corrosion. When calibrating controls, set the throttle, choke, and idle speeds according to the manufacturer’s specifications and verify that emergency stop features, if equipped, respond immediately to user input. Document any anomalies and perform functional tests with appropriate safety procedures before returning the machine to service.
Deck and cutting system service
Regular inspection and maintenance of the deck and cutting system are essential to ensure optimal performance, clean cuts, and extended equipment life. Begin with a thorough visual check of the deck surface for any dents, cracks, or corrosion, and remove any adhered grass, soil, or debris to prevent uneven cutting. Pay close attention to the grass discharge area and underside of the deck to identify buildup that could impede airflow or cause extra wear on blades and spindles. Ensure that all deck mounting bolts are present and tight, as loose hardware can lead to vibration, alignment issues, and accelerated component wear. When cleaning, use a stiff brush and approved degreaser, avoiding high-pressure washing that could force moisture into bearings or seals. After cleaning, inspect the deck for warping or deformities that might affect cutting height consistency or blade contact with the ground.
Blade quality directly influences cut quality and mower efficiency. Remove the blades one at a time following proper safety procedures, and inspect for nicks, cracks, or excessive wear at the cutting edge. If a blade is dull or damaged, replace it with a OEM-part blade designed for the LC347IVX model to maintain proper balance and vibration characteristics. Balance new blades by mounting them on the blade bolt and spinning by hand to verify even weight distribution; any significant wobble indicates improper fit or manufacturing defect and warrants replacement. Reinstall the blades with the correct torque spec and ensure the blade adapter is clean and free of burrs or debris that could cause misalignment. Finally, confirm that both blades are installed in the correct orientation and that the securing hardware is tightened to the specified torque to prevent loosening during operation.
Spindle and belt maintenance is critical for smooth operation and long service life. Inspect spindles for lateral play, unusual noise, or heat buildup during operation, which can signal bearing wear or misalignment. If spindles show excessive runout or rough feeling when rotated manually, remove and service or replace the bearings as needed, ensuring proper lubrication with the recommended grease type and interval. Check the belt drive system for cracks, glazing, or fraying and replace any worn belts promptly to maintain correct blade speed and cutting efficiency. Align pulleys and adjust belt tension according to the manufacturer’s specifications to avoid belt slip, heat generation, or uneven blade performance. Regularly inspect the deck belt guards and idler pulleys for wear, ensuring safe clearance and free movement; replace worn guards or pulleys to prevent belt damage and potential injury. Maintain cleanliness around the spindle area to prevent grass clogging that could impede cooling and bearing life.
Cooling and exhaust systems
The cooling system in the Husqvarna LC347IVX is designed to maintain optimal engine temperatures during operation, preventing overheating and ensuring consistent performance. Begin with a visual inspection of the radiator fins and shrouding for damage, dirt buildup, or loose mounting hardware. Clear any debris from the cooling vents and verify that the fan assembly spins freely without binding. Check the coolant level (if applicable to this model’s cooling design) and inspect hoses for cracks, swelling, or leaks that could impair heat transfer. A properly functioning cooling system not only extends engine life but also improves fuel efficiency and overall mowing performance by maintaining stable operating temperatures.
During inspection, pay attention to air intake paths and any obstructions near the cooling fins. Ensure that the engine air intake is unobstructed and that the muffler and exhaust components are not directing heat toward sensitive plastics or wiring. Look for signs of coolant or coolant-related residue around gaskets, hose clamps, and the radiator ports, which could indicate a leak. Record any irregular temperature readings or warning indicators from the engine control system, and plan further diagnostic steps if the readings suggest overheating. Regular cooling system checks should be integrated into routine maintenance to prevent unexpected downtime and costly repairs.
Exhaust safety considerations are essential for personal safety and equipment longevity. Inspect the exhaust outlet for blockages, cracks, or corrosion that could affect exhaust flow and engine performance. Ensure the exhaust guard and heat shields are securely fastened and free of damage to prevent contact burns or heat damage to nearby components. When servicing the exhaust system, allow the engine to cool completely before handling components to avoid severe burns. Be mindful of any fuel vapors or residue near the exhaust area, and work in a well-ventilated environment to minimize fire risk. Regularly cleaning or replacing the exhaust spark arrestor (if equipped) can reduce the likelihood of clogging and maintain efficient combustion while lowering the risk of engine damage.
Safety protocols should also include verifying that all fasteners around the exhaust and cooling assemblies are torqued to the manufacturer’s specifications. Use proper personal protective equipment, including gloves and eye protection, when inspecting or servicing these systems. If any component shows signs of significant wear, deformation, or damage beyond simple cleaning or tightening, replace it promptly to maintain optimal performance and safety. Document all maintenance actions and any parts replacements to support future service history and warranty considerations.
In addition to routine checks, align cooling and exhaust system maintenance with the mower’s operating conditions. For example, operate with clean air filters and adequate ventilation, especially in hot climates or during extended use. Keeping the cooling system free of obstruction and ensuring unobstructed exhaust flow not only protects engine health but also improves performance, reduces noise, and contributes to safer operation overall. A proactive maintenance approach helps prevent overheating, fuel inefficiency, and unexpected downtime, keeping the LC347IVX ready for reliable mowing tasks.
Always refer to the manufacturer’s service guidelines for specific torque values, part numbers, and step-by-step procedures. If a fault is suspected but not easily resolved through basic maintenance, consult qualified service personnel or authorized Husqvarna service centers. The goal of cooling and exhaust system care is to preserve engine integrity, protect operator safety, and extend the service life of the LC347IVX through consistent, informed maintenance practices.
In summary, regular cooling system inspection and stringent exhaust safety practices are essential for optimal performance and safety of the LC347IVX. By keeping fins clean, hoses intact, and exhaust components in good condition, you prevent overheating and reduce the risk of engine damage. Meticulous attention to these areas, combined with adherence to safety procedures and proper maintenance timing, ensures that the mower operates efficiently, safely, and with reliable longevity.
Long term storage guidelines are essential to preserve the performance and longevity of the HUSQVARNA LC347IVX. Before storing, perform a thorough cleaning to remove dirt, grass, and debris from the cutting deck, underside, and air intake areas. Inspect all fasteners and replace any damaged or corroded components to prevent deterioration during the off season. Drain fuel or treat it with a stable fuel additive to minimize varnish formation in the carburetor and fuel lines. Fully charge the battery and store it in a cool, dry location to prevent deep discharge and sulfation, which can reduce capacity and lifespan. Finally, protect the equipment from moisture and pests by covering it with a breathable tarp or storing it in a dry, well-ventilated area to deter mold and corrosion.
During long term storage, it is important to monitor the engine and fuel system to avoid engine damage when the unit is brought back into service. If possible, run the engine briefly to circulate lubricants and ensure there are no leaks, then allow the engine to cool completely before storage. For models with a carbureted engine, remove any remaining fuel from the system to prevent gum and varnish build-up that can clog jets and passages. If you cannot drain the fuel, use a high-quality fuel stabilizer and run the engine for several minutes to mix the stabilized fuel through the carburetor. Keep the spark plug clean and protected, and consider removing the spark plug cap and placing it in a dry area to prevent moisture-induced misfires when storage resumes.
Battery preservation during off season is critical to maintaining starting performance and overall reliability. Start by disconnecting the battery from the mower to prevent parasitic drain and accidental starting. Clean the battery terminals and cables, applying a light coat of dielectric grease to minimize corrosion. Store the battery on a non-conductive, padded surface in a climate-controlled area away from extreme temperatures; extreme heat or cold can shorten battery life. For lead-acid batteries, keep the charge level around 60-80% to maximize longevity and perform a full recharge every 1-2 months if possible. For maintenance-free or lithium-ion batteries, follow the manufacturer’s recommended storage voltage and periodic recharge schedule to maintain optimal capacity. Regularly inspect the battery for swelling or leaks, and replace immediately if any abnormal signs are observed to prevent hazardous conditions.
After storage, prepare the LC347IVX for operation by performing a full pre-use check. Reinstall a fresh, stabilized fuel if you drained it, reconnect the battery, and inspect the fuel lines and connections for cracks or leaks. Check the air filter, muffler, and cooling fins for obstructions, and clean or replace components as needed to ensure proper airflow and cooling. Lubricate moving parts according to the manufacturer’s specifications, including the blade spindle and wheel axles, using appropriate lubricants. Finally, test run the engine in a safe, open area to confirm smooth operation, proper cutting performance, and no abnormal noises or vibrations before returning to regular use.
The HUSQVARNA LC347IVX is designed with modular service parts that balance durability and ease of replacement. When performing maintenance, begin by inspecting the OEM components that wear most during normal operation, such as belts, blades, and fasteners. OEM parts are engineered to meet exacting specifications, ensuring compatibility with the drive system, cutting deck, and safety interlocks. Using genuine parts reduces the risk of improper fitment and can help maintain the original performance and safety standards of the mower. Before ordering, verify the model and serial number to confirm compatibility, as production runs may include revisions that affect part fitment and availability. Keeping a small inventory of essential service parts can shorten downtime and support reliable performance across the mowing season.
OEM parts compatibility hinges on precise part numbers and fitment for the LC347IVX. Start by consulting the manufacturer’s parts diagram to identify the correct items for your machine's configuration, including blade adapters, spindle assemblies, and drive belt kits. Confirm that replacement parts reflect the same model year and any regional variants, as these factors influence connector types and mounting patterns. Pay attention to torque specifications and seal integrity when installing components, since overtightening or improper sealing can lead to premature wear or leaks. If replacing a major assembly, verify that the new part integrates with existing safety switches, sensors, and the ignition or start system to avoid nuisance faults. Maintaining a record of parts used during service helps with future ordering and warranty eligibility.
Service parts identification requires a systematic approach to avoid misorders and downtime. Begin with the mower deck and engine area, noting blade type, spindle configuration, and deck-to-spindle alignment requirements. For electrical and control components, check the harness connectors, fuses, and protection devices, ensuring that replacements match the original gauge, connector style, and voltage ratings. When ordering, request the exact OEM part number rather than a generic substitute, and confirm lead times along with return policies in case of improper fit. Keep a cross-reference of before-and-after part numbers if any service bulletin has been issued by Husqvarna, as these alerts may indicate an improved design or compatibility updates. Finally, document the service portion live in your maintenance log, including part numbers, serial data, and installation notes, to facilitate accurate future repairs and quick reordering if needed.
In practice, assembling a parts order involves cross-verifying the list against the current user manual and technical catalogs. Always assess the function of each listed item before installation to ensure it aligns with operational expectations such as cutting performance, vibration, and deck stability. For consumables like filters, blades, and lubricants, select the OEM versions to guarantee correct filtration efficiency, edge geometry, and lubrication compatibility. After receiving parts, inspect machining surfaces, threads, and seal faces for shipping damage before attempting installation. When in doubt, contact authorized service centers or Husqvarna technical support to confirm compatibility and obtain guidance on any recent part revisions that could impact performance or safety. This disciplined approach minimizes downtime and preserves the LC347IVX’s design intent and reliability.
The section on OEM parts compatibility and service parts identification and ordering emphasizes a proactive, documentation-driven maintenance workflow. By cataloging part numbers, installation dates, and observed performance metrics, technicians can build a robust history that supports accurate diagnostics and efficient repairs. The emphasis on genuine components supports warranty compliance and ensures that protective features—such as blade brake, sensor interlocks, and alert systems—continue to function as designed. Regularly revisiting the parts catalog during scheduled maintenance helps to anticipate wear items and plan timely replacements before failures occur. Embracing this methodical approach yields longer service life, safer operation, and consistent mowing results for the LC347IVX.
Warranty and safety compliance
The warranty coverage overview for the Husqvarna LC347IVX service scope provides clarity on what is included and what is excluded from coverage. It typically outlines the duration of the consumer warranty, the conditions under which service and parts are provided, and the responsibilities of both the manufacturer and the user. This section also details the required maintenance schedule and documented service history that must be kept to maintain eligibility. Understanding these terms helps technicians and owners plan for routine maintenance, anticipate potential service costs, and ensure that interventions comply with the manufacturer’s standards. Always verify the specific warranty terms printed on the product registration card or the official Husqvarna warranty documentation accompanying the equipment, as regional variations may apply.
Regulatory and safety compliance for the LC347IVX is designed to ensure operation within legal and safety guidelines across applicable regions. This includes adherence to electrical, emission, and noise regulations, as well as any applicable consumer safety standards. Technicians should verify that any replacement parts meet OEM specifications and that installation procedures comply with established safety protocols. Compliance also requires proper labeling, torque specifications, and tool usage to prevent equipment damage and operator injury. Keeping up-to-date with regulatory changes is essential for ongoing service validity and for maintaining a safe working environment during maintenance and repair activities.