Husqvarna RZ4221 User Manual

RZ4221 BF / 967176101Operator ManualPlease read the operator’s manual carefully and make sure you understand the instructions before using the machine

SAFETY10• Disengage blades when not mowing. Shut off engine and wait for all parts to come to a complete stop before cleaning the machine, removing t

SAFETY11Personal Safety Equipment• Make sure that you have first aid equipment close at hand when using the machine.• Never use the machine when bare

SAFETY128011-517Never allow children to operate the machine8011-518Keep children away from work areaChildrenTragic accidents can occur if the operator

SAFETY13Safe Handling of GasolineWARNING!The engine must not be started when the driver’s floor plate or any protective plate for the mower deck’s driv

SAFETY148011-515Never drive the machine in an enclosed spaceGeneral Maintenance• Never operate machine in a closed area.• Keep all nuts and bolts ti

SAFETY15Sparking can occur when working with the battery and the heavy cables of the starter circuit. This can cause battery explosion, fire or eye inj

SAFETY16IMPORTANT INFORMATIONThe parking brake is not sufficient to lock the machine in place during transport. Ensure that the machine is well fastene

CONTROLS17This operator’s manual describes the Husqvarna Zero Turn Rider. The rider is fitted with a four-stroke overhead valve engine.Transmission fro

CONTROLS188050-003Steering controlsSteering Control LeversThe machine’s speed and direction are continuously variable using the two steering controls.

CONTROLS19Throttle ControlThe throttle control regulates the engine speed and thereby the rate of rotation of the blades.In order to increase or decre

When this product is worn out and no longer used, it should be returned to the reseller or other party for recycling.©2012 All rights reserved.Orangeb

CONTROLS20Choke ControlThe choke control is used for cold starts in order to provide the engine with a richer fuel mixture.For cold starts the throttl

CONTROLS21Fuel Shut Off ValveThe fuel shut off valve is located in the fuel line under the seat. Tilt seat forward for access. The fuel valve is ON wh

CONTROLS22Bypass LinkagesWhen pushing or pulling the mower, be sure to engage the EZT Hydrogear bypass linkages. The EZT bypass linkages are located o

OPERATION23Read the Safety section and following pages, if you are unfamiliar with the machine.TrainingDue to unique steering capabilities, zero turn

OPERATION24Before Starting• Read the sections Safety Instructions and Controls before starting the machine.• Perform the daily maintenance before st

OPERATION258050-008Set the throttle8050-028Place controls in neutral position8050-007Choke control5. Move the steering controls outward to the locked

OPERATION268050-135Turn to START position8050-136Release ignition to the RUN position8050-010Open the fuel valve8. Open the fuel valve.IMPORTANT INFO

OPERATION27Slowly slide the choke control back to the middle position when the engine has started.Set the desired engine speed with the throttle. Allo

OPERATION28Running1. Release the parking brake by moving the lever downward. NOTE: The mower is equipped with an operator presence system. When the e

OPERATION29Operating on HillsRead the Safety Instructions Driving on Slopes in the Safety Instructions.• The slowest speed possible should be used be

CONTENTSINTRODUCTION ... 5General ...

OPERATION30Mowing Tips• Observe and flag rocks and other fixed objects to avoid collisions.• Begin with a high cutting height and reduce it until the

OPERATION31Stopping the EngineAllow the engine to idle a minute in order to attain normal operating temperature before stopping it, if it has been wor

OPERATION32Moving Machine By HandWhen pushing or pulling the mower, be sure to engage the EZT Hydrogear bypass linkages. The EZT bypass linkages are l

MAINTENANCE33Maintenance ScheduleThe following is a list of maintenance procedures that must be performed on the machine. For those points not describ

MAINTENANCE341) First change after 5-8 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours.2) In dusty

MAINTENANCE35BatteryYour mower is equipped with a maintenance free battery that does not need servicing. However, periodic charging of the battery wit

MAINTENANCE36Safety SystemThe machine is equipped with a safety system that prevents starting or driving under the following conditions.The engine can

MAINTENANCE37Parking BrakeVisually check that no damage is found on the lever, links, or switch belonging to the parking brake. Perform a standstill t

MAINTENANCE38213WARNING!The engine and the exhaust system, become very hot during operation. Risk for burns if touched. Allow engine and exhaust syste

MAINTENANCE39Adjusting the Mower DeckWARNING!Before performing any service or adjustment checklist:1. Engage the parking brake.2. Place the Blade

WARNING!Failure to follow cautious operating practices can result in serious injury to the operator or other persons. The owner must understand these

MAINTENANCE40213Caster WheelsCheck every 200 hours. Check that wheels rotate freely. If wheels do not rotate freely take the unit to your dealer for s

LUBRICATION41GeneralRemove the ignition key to prevent unintentional movements during lubrication.When lubricating with an oil can, it must be filled w

LUBRICATION42Front Wheel MountLubricate with a grease gun, one zerk for each wheel mount.Use only good quality bearing grease.Grease from well-known b

TROUBLESHOOTING43Problem / CauseEngine will not start• Blade lever is engaged• Steering controls are not locked in neutral position• Driver is not

TROUBLESHOOTING44Problem / CauseEngine overheats• Clogged air intake or cooling fins• Engine overloaded• Poor ventilation around engine• Defective

STORAGE45Winter StorageThe machine should be readied for storage at the end of the mowing season or if it will not be in use for longer than 30 days.

46 WIRING DIAGRAM8053-002

TECHNICAL DATA47 (1The power rating of the engines indicated is the average net power output (at specified rpm) of a typical production engine for the

TECHNICAL DATA48HEX HEAD CAP SCREWSThe torque values shown should be used as a general guideline when specific torque values are not given.U.S. Standar

49CONFORMITY CERTIFICATESUSA requirementsLabels are placed on the engine and/or in the engine compartment stating that the machine will fulfill the req

INTRODUCTION5CongratulationsThank you for purchasing a Husqvarna ride-on mower. This machine is built for superior efficiency to rapidly mow primarily

50SERVICE JOURNALActionDate, mtr reading, stamp, signDelivery ServiceCharge battery.Adjust tire pressure of all wheels according to Technical Data.Mou

51SERVICE JOURNALActionDate, mtr reading, stamp, signAfter the First 10 HoursChange engine oil.25-Hour ServiceCheck the fuel pump’s air filter.Check th

52SERVICE JOURNALActionDate, mtr reading, stamp, sign50-Hour ServicePerform the 25-hour service.Clean/replace the air cleaner’s paper filter cartridge

53SERVICE JOURNALActionDate, mtr reading, stamp, sign300-Hour ServicePerform the 25-hour service.Perform the 50-hour service.Perform the 100-hour serv

54SERVICE JOURNALActionDate, mtr reading, stamp, sign

115 498228 Rev A2012-06-01www.husqvarna.com

INTRODUCTION6Good ServiceHusqvarna’s products are sold all over the world and only in specialized retail stores with complete service.. This ensures t

SYMBOLS AND DECALS7R NThese symbols are found on the machine and in the operator’s manual.Study them carefully so that you know what they mean.IMPORTA

SYMBOLS AND DECALS8Moving sharp blades under cover Warning! Rotating blades, keep away from the discharge deck Battery acid is corrosive, explosive an

SAFETY9Safety InstructionsThese instructions are for your safety. Read them carefully.General Operation• Read, understand, and follow all instruction