Husqvarna RZ4621 BF Operator's Manual
Husqvarna lawn mower user manual
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- Parts manual (44 pages) ,
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- Operator's manual (64 pages)
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Summary of Contents for Husqvarna RZ4621 BF
- Page 1 Operator Manual RZ4621 BF / 966582301 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. English...
- Page 2 When this product is worn out and no longer used, it should be returned to the reseller or other party for recycling. 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.
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Page 3: Table Of Contents
INTRoDUCTIoN ... 5 Driving and Transport on Public Roads ... 5 Towing ... 5 operating ... 5 Good Service ... 6 SymBolS AND DECAlS ... 7 SAfETy ... 9 Safety Instructions ... 9 Personal Safety Equipment ... 11 Slope operation ... 11 Safe Handling of Gasoline ... - Page 4 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.
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Page 5: Introduction
Congratulations Thank you for purchasing a Husqvarna ride-on mower. This machine is built for superior efficiency to rapidly mow primarily large areas. A control panel easily accessible to the operator and a hydrostatic transmission regulated by steering controls both contribute to the machine’s performance. -
Page 6: Good Service
Good Service Husqvarna's products are sold all over 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. -
Page 7: 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. - Page 8 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...
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Page 9: Safety
Safety Instructions These instructions are for your safety. Read them carefully. WARNING! This symbol means that important safety instructions need to be emphasized. It concerns your safety. IMPORTANT: THIS CUTTING mACHINE IS CAPABlE of AmPUTATING HANDS AND fEET AND THRoWING oBJECTS. - Page 10 • Do not operate the machine while under the influence of alcohol or drugs. • Watch for traffic when operating near or crossing roadways. • Use extra care when loading or unloading the machine into a trailer or truck. • Always wear eye protection when operating machine.
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Page 11: Personal Safety Equipment
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. - Page 12 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.
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Page 13: Safe Handling Of Gasoline
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. -
Page 14: General Maintenance
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. - Page 15 Sparking can occur when working with the battery and the heavy cables of the starter circuit. This can cause battery explosion, fire or eye injury. Sparking in this circuit can not occur after the chassis cable (normally negative, black) is removed from the battery. WARNING! Avoid electrical sparking and its consequences by the following...
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Page 16: Transport
• The machine is tested and approved only with the equipment originally provided or recommended by the manufacturer. only use 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. -
Page 17: Controls
This operator’s manual describes the Husqvarna Zero Turn Rider. The rider is fitted with either a Briggs & Stratton four-stroke overhead valve engine. Control Locations Steering control levers Parking brake Throttle control Blade switch Ignition switch Choke control fuses CoNTRolS Transmission from the engine is made via a belt- driven hydraulic pumps. -
Page 18: Steering Control Levers
Steering Control Levers The machine’s speed and direction are continuously variable using the two steering controls. The steering controls can be moved forward or backward about a neutral position. furthermore, there is a neutral position, which is locked if the steering controls are moved outward. -
Page 19: Parking Brake
Parking Brake IMPORTANT INFORMATION The machine must stand absolutely still when applying the parking brake. Always set the parking brake before dismounting. Release the parking brake before moving the mower. The parking brake is found on the left of the machine. Push the release button and pull the lever backward to activate the brake—push forward to release it. -
Page 20: Ignition Switch
Ignition Switch The ignition key is placed on the control panel and is used to start and stop the engine. Choke Control The choke control is used for cold starts in order to provide the engine with a richer fuel mixture. for cold starts the control should be pulled out. -
Page 21: Fuel Tank
Fuel Tank Read the safety instructions before refueling. The machine has one fuel tank, just behind the console. The tank capacity is 3 gallons (11.4 liters). Regularly check the gas cap gasket for damage and keep the cap properly tightened. The engine will run on a minimum of 85-octane unleaded gasoline (no oil mix). -
Page 22: Fuel Shut Off Valve
Fuel Shut Off Valve The fuel shut off valve is located at the left rear of the seat. The valve is off when the handle tab is turned perpendicular to the fuel line. IMPORTANT INFORMATION Always raise the deck to the highest position for transport. -
Page 23: Seat Adjustment Lever
Seat Adjustment Lever The seat can be adjusted lengthways. When making adjustments, the lever under the right side of the seat is pulled up, after which the seat can be moved backward or forward. Hour Meter The hour meter displays the total operating time. It will flash CHG oIl (Change oil) at 50 hour intervals. -
Page 24: Operation
Read Safety Instructions section and following pages, if you are unfamiliar with the machine. Training Zero turn mowers are far more maneuverable than typical riding mowers due to their unique steering capabilities. We suggest that this section be reviewed in its entirety prior to attempting to move the mower under its own power. -
Page 25: Before Starting
Before Starting • Read the sections Safety Instructions and Controls before starting the machine. • Perform the daily maintenance before starting (see maintenance Schedule in the maintenance section). • Check that there is sufficient fuel in the fuel tank. • Adjust the seat to the desired position. - Page 26 move the steering controls outward to the locked (outer) neutral position. move the throttle to the middle position. If the engine is cold, the choke control should be pulled up. oPERATIoN Place controls in neutral position Set the throttle Set the choke control 8061-026 8052-001 8052-001...
- Page 27 Press in and turn the ignition key to the start position. IMPORTANT INFORMATION Do not run the starter for more than 5 seconds each time. If the engine does not start, wait approximately 10 seconds before retrying. When the engine starts, immediately release the ignition key back to the run position.
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Page 28: Jumper Cables
Weak Battery WARNING! Lead-acid batteries generate explosive gases. Keep sparks, flame and smoking materials away from batteries. Always wear eye protection when around batteries. IMPORTANT INFORMATION Your mower is equipped with a 12-volt negative grounded system. The other vehicle must also be a 12-volt negative grounded system. -
Page 29: Running
Running Release the parking brake by pushing the top release button in and moving the lever downward. NoTE: The mower is equipped with an operator presence system. When the engine is running, any attempt by the operator to leave the seat without first setting the parking brake will shut off the engine. -
Page 30: Operating On Hills
Engage the mower deck by pulling out the blade switch. move throttle control to full throttle. The machine’s speed and direction are continuously variable using the two steering controls. When both controls are in the neutral position, the machine stands still. By moving both controls an equal amount forward or backward, the machine moves in a straight line forward or backward respectively. -
Page 31: Mowing Tips
Mowing Tips • observe and flag rocks and other fixed objects to avoid collisions. • Begin with a high cutting height and reduce it until the desired mowing result is attained. The average lawn should be cut to 2½" (64 mm) during the cool season and over 3"... -
Page 32: Stopping The Engine
Stopping the Engine Allow the engine to idle a minute in order to attain normal operating temperature before stopping it, if it has been worked hard. Avoid idling the engine for longer periods, as there is a risk of the spark plugs fouling. -
Page 33: Manual Transport
Manual Transport When pushing or pulling the mower, engage the EZT (Integrated Zeroturn Transaxle) bypass linkages. The EZT bypass linkages are located on the rear of the frame, below the rear engine guard. Raise the deck into the highest cutting position. -
Page 34: 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. - Page 35 MAINTENANCE Check/adjust throttle cable Check the condition of belts, belt pulleys Change the engine oil Replace the engine oil filter Clean/replace the spark plugs Replace the fuel filter Replace air filter (paper filter) Check the caster wheels (every 200 hours) Replace the air cleaner’s pre-filter Check/adjust the mower deck Check the engine valve clearance...
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Page 36: Battery
Battery your mower is equipped with a maintenance free battery and does not need servicing. However, periodic charging of the battery with an automotive type battery charger will extend its life. • Keep battery and terminals clean. • Keep battery bolts tight. •... -
Page 37: Safety System
Safety System The machine is equipped with a safety system that prevents starting or driving under the following conditions. The engine can only be started when: The mower deck is disengaged. The steering controls are in the outer, locked neutral position. The parking brake is on. -
Page 38: Tire Pressures
Visually check that no damage is found on the lever, cables, or switch belonging to the parking brake. Perform a standstill test and check that there is sufficient braking action. To adjust the parking brake, contact the Husqvarna service workshop. IMPORTANT INFORMATION The machine must be absolutely standing still when applying the parking brake. -
Page 39: V-Belts
V-belts Check every 100 hours of operation. Check for severe cracking and large nicks. NoTE: The belt will show some small cracks in normal operation. The belts are not adjustable. Replace belts if they begin to slip from wear. Deck Belt Park on a level surface. -
Page 40: Cutting Blades
Install and tighten blade bolt securely. Torque blade bolt to 90 ft/lbs (122 Nm). IMPORTANT INFORMATION Special blade bolt is heat treated. Replace with a Husqvarna bolt if required. Do not use lower grade hardware than specified. mAINTENANCE Check the blades... -
Page 41: Adjusting The Mower Deck
Adjusting the Mower Deck Leveling deck Adjust the deck while the mower is on a level surface. make sure the tires are inflated to the correct pressure. See Technical Data under Transmission. If tires are under or over inflated, the deck cannot be properly adjusted. -
Page 42: Anti-Scalp Rollers
Anti-scalp rollers Anti-scalp rollers are properly adjusted when they are just slightly off of the ground when the deck is at the desired cutting height in the operating position. Anti-scalp rollers then keep the deck in the proper position to help prevent scalping in most terrain conditions. -
Page 43: Cleaning
Cleaning Regular cleaning and washing, especially under the mower deck, will increase the machine’s life-span. make it a habit to clean the machine directly after use (after it is cooled), before the debris sticks. Use compressed air to clean the top side of mower deck. -
Page 44: Lubrication
12/12 Every year 1/52 Every Week 1/365 Every day 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. -
Page 45: Front Wheel Mount
2-3 strokes per spindle. Transmission The transmission is maintenance free with no need for level checks or oil changes. If a leak occurs, replace the unit or contact your Husqvarna dealer. lUBRICATIoN Lubricating the front wheels Deck spindle... -
Page 46: Troubleshooting
Problem Engine will not start Starter does not turn the engine over Engine runs rough Engine seems weak machine vibrates TRoUBlESHooTING Cause • Blade switch is engaged. • Steering controls are not locked in the neutral position • Parking brake is not activated •... - Page 47 Problem Engine overheats Battery not charging The machine moves slowly, unevenly, or not at all mower deck not engaging Transaxle leaks oil Uneven mowing results TRoUBlESHooTING Cause • Clogged air intake or cooling fins • Engine overloaded • Poor ventilation around engine •...
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Page 48: Storage
Service When ordering spare parts, please specify the purchase year, model, type, and serial number. Always use genuine Husqvarna spare parts. An annual check-up at an authorized service workshop is a good way to ensure that your machine performs its best the following season. -
Page 49: Schematics
SCHEmATICS... -
Page 50: Technical Data
Engine manufacturer Type Power lubrication oil capacity excluding filter oil capacity including filter Engine oil (See viscosity diagram) fuel fuel tank capacity Spark plugs / gap Cooling Air filter Alternator Starter Transmission Transmission Speed and direction controls Speed forward Speed reverse Brakes front caster tires, smooth tread Rear tires, turf pneumatic... - Page 51 Frame Cutting Width Cutting Height Uncut Circle Number of Blades Blade length Nose Rollers Sprung Seat Hinged Arm Rests Hour meter Blade Engagement Deck Construction Productivity Dimension Weight Base machine length Base machine Height Base machine Width overall Width, Chute Up overall Width, Chute Down TECHNICAl DATA RZ4621BF / 966582301...
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Page 52: Accessories
Accessories Collection system Engine crankshaft bolt 50 ft/lb (67 Nm) Deck pulley bolts 150 ft/lb (203 Nm) lug nuts 75 ft/lb (100 Nm) Blade bolt 90 ft/lb (122 Nm) The torque values shown should be used as a general guideline when specific torque values are not given. SAE Grade 5 Grade ft./lbs... -
Page 53: Conformity Certificates
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. -
Page 54: Service Journal
Action Delivery Service Charge the battery. Adjust the tire pressure of all wheels to 15 PSI (1 bar). mount the steering controls in the normal position. Connect the contact box to the cable for the seat’s safety switch. Check that the right amount of oil is in the engine. Adjust the position of the steering controls. -
Page 55: Delivery Service
Action Delivery Service Charge the battery. Action 25-Hour Service Check the fuel pump’s air filter. Sharpen/Replace mower blades if required. Check the tire pressures. Check battery with cables. lubricate according to lubrication chart. Check/clean the engine’s cooling air intake. Clean the air cleaner’s pre-filter (foam). SERVICE JoURNAl Date, mtr reading, stamp, sign Date, mtr reading, stamp, sign... - Page 56 Action 50-Hour Service Perform the 25-hour service. Clean/replace the air cleaner’s filter cartridge (paper filter (shorter intervals for dusty operating conditions). Change engine oil. lubricate according to lubrication chart. Check/adjust the parking brake. Action 100-Hour Service Perform the 25-hour service. Perform the 50-hour service.
- Page 57 Action 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). Action At Least Once Each Year Clean the engine’s cooling air intake (25 hours).
- Page 58 SERVICE JoURNAl Date, mtr reading, stamp, sign Action...
- Page 60 P/N 115 355326R1 03/11/10...