Husqvarna Z 4824 Manual
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English-29 OPERATION Running 1. Release the parking brake by moving the lever downward. Your 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. 2. Move the steering controls to the neutral position (N). 3. Select the cutting height by the cutting height pedal. 4. Engage the mower deck by pulling out the blade switch. 5. Move throttle control to full throttle (not choke) 6. 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. In order, for example, to turn right while moving forward, move the right control towards the neutral position. The rotation of the right wheel is reduced and the machine turns to the right. 8011-481 Released parking brake 4 1 /2 4 3 1 /2 3 2 1 /2 2 1 1 /2 8011-753 Cutting height selection IMPORTANT INFORMATION The mower deck’s anti-scalp rollers should be evenly adjusted. WARNING! Ensure that no one is near the machine when engaging the Blade switch. 8011-669 Engaging the mower deck
English-30 OPERATION Turning on the spot can be achieved by moving one control backward (behind the neutral position) and carefully moving the other steering control forward from its neutral position. Operating on hills Read the Safety Instructions Driving on Slopes in the Safety Instructions. • The slowest speed possible should be used before starting up or down hills. • Avoid stopping or changing speed on hills. • If stopping is absolutely necessary, pull drive levers into the neutral position and push to the outside of the unit and engage the parking brake. • To restart movement, release the parking brake. • Pull the control levers back to the center of the mower and press forward to regain forward motion. • Make all turns slowly.WARNING! Do not drive up or down hills with slopes greater than 10 degrees. And do not drive across any slopes. 8011-755 Stopping conditions IMPORTANT INFORMATION Control levers return to neutral when released. This may cause the mower to suddenly stop. 8011-481 Released parking brake
English-31 OPERATION 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 2 1/2 (64 mm) during the cool season and over 3 (76 mm) during the hot months. For healthier and better looking lawns, mow often after moderate growth. For best cutting performance, grass over 6 (15 cm) in height should be mowed twice. Make the first cut relatively high; the second to the desired height. • The mowing result will be best with a high engine speed (the blades rotate rapidly) and low speed (the rider moves slowly). If the grass is not too long and dense, the driving speed can be increased without negatively affecting the mowing result. • The finest lawns are obtained by mowing often. The lawn becomes more even and the grass clippings more evenly distributed over the mown area. The total time taken is not increased as a higher operating speed can be used without poor mowing results. • Avoid mowing wet lawns. The mowing result is poorer because the wheels sink into the soft lawn, clumps build, and the grass clippings fasten under the cowling. • Hose the mower deck underside with water after each use. When cleaning, the mower deck shall be raised into the transport position. Make sure the mower is cooled and the engine is off. • Use compressed air to clean top surface of the deck. Avoid flooding water on top surface, engine and electrical components. • When the mulching kit is used, it is important that the mowing interval is frequent. WARNING! Clear the area of objects such as rocks, toys, wire, etc., which could be picked up and throw by the blades. 8011-603 Mowing patterns WA R N I N G ! Never drive the rider on terrain that slopes more than 10°. Mow slopes up and down, never side-to-side. Avoid sudden directional changes.
English-32 OPERATION 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. 1. Disengage the mower deck by depressing the blade switch. 2. Raise the mower deck by depressing the pedal forward to the transport position. 3. When the machine is standing still, activate the parking brake by pulling the lever upward. 4. Move the throttle to the minimum position (tortoise symbol). Turn the ignition key to the stop position. 5. Move the steering controls outward. 6. Remove key. Always remove key when leaving the mower to prevent unauthorized use. 8011-668 Disengage the mower deck 4 1/2 4 3 1 /2 3 2 1 /2 2 1 1/2 8011-753 Raise the mower deck with the lifting pedal IMPORTANT INFORMATION Leaving the ignition switch in any other position than OFF will cause the battery to be discharged and the hour meter to accumulate hours.
English-33 OPERATION Moving by Hand When pushing or pulling the mower, be sure to engage the IZT (Integraded Zeroturn Transaxle) bypass linkages. The IZT bypass linkages are located on the rear of the frame. • Raise the deck into the highest cutting position. • Pull the IZT bypass linkages out and into the slots and release so that it is held in the bypass position. • To reengage the IZT’s to drive, reverse the above procedure. WARNING! No adjustments or maintenance to be carried out unless: - the engine stopped, - the ignition key has removed, - the parking brake is on. 8011-722 1. IZT Bypass linkages Bypass linkages 8011-722 1. Head outside of rear deck 2. IZT Bypass linkage in bypass position Bypass position
English-34 MAINTENANCE 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. Read “Maintenance” in the Safety Instructions section. z= Described in this manual = Not described in this manual Daily mainte- nanceWeekly mainte- nanceAt least once each yearMaintenance interval in hours Maintenance Page Before After 25 50 100 300 Check the parking brake 41z Check the engine’s oil level (every refueling) 54z Check outside of air cleaner 39z Check the safety system 38z Check for fuel and oil leakages - Check/clean the engine’s cooling air intake 39z Check the mower deck 46z Check hardware (screws, nuts, etc.) 50z Clean under the mower deck 50z Start the engine and blades, listen for unusual sounds- Check for damage - Thoroughly clean around the engine - Clean around belts, belt pulleys, etc. - Check the tire pressures 41z Check battery 36z Sharpen/Replace mower blades 45z Lubricate the caster wheels 50z Clean the engine’s cooling air intake 2)39zz Clean the air cleaner’s pre-filter 2) (foam)40zz Clean the air cleaner’s filter cartridge 2) (paper filter)40 zz Check/adjust the parking brake - Inspect muffler/Spark arrester -
English-35 MAINTENANCE 1) First change after 5-8 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours. 2) In dusty conditions, cleaning and replacement are required more often. 3)For daily use, the machine should be lubricated twice weekly. 4)Performed by authorized service workshop. z = Described in this manual = Not described in this manual Daily mainte- nanceWeekly mainte- nanceAt least once each yearMaintenance interval in hours Maintenance Page Before After 25 50 100 300 Check/adjust throttle cable 39z Check the condition of belts, belt pulleys, etc. 42zz Change the engine oil 1)52zz Replace the engine oil filter 54zz Clean/replace the spark plugs 37zz Replace the air filter (paper filter) 2)40zz Check the caster wheels (every 200 hours) 50z Clean the cooling fins 2)- Replace the air cleaner’s pre-filter 2)(foam)40zz Check/adjust the mower deck 46zz Check the engine valve clearance4)- Perform the 300-hour service 4)70 WARNING! No adjustments or maintenance to be carried out unless: • The engine is stopped. • The ignition key has been removed. • The parking brake is on.
English-36 MAINTENANCE 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. • Recharge at 6-10 amperes for 1 hour To clean battery and terminals Corrosion and dirt on the battery and terminals can cause the battery to “leak” power. 1. Open terminal access doors. 2. Disconnect BLACK battery cable first, then the RED battery cable and remove the battery from the machine. 3. Rinse the battery with plain water and dry. 4. Clean terminals and battery cable ends with wire brush until shiny. 5. Coat terminals with grease or petroleum jelly 6. Reinstall battery. Replacing battery 1. Lift Seat and rotate forward. 2. Open terminal access doors. 3. Using two 1/2 wrenches disconnect BLACK battery cable then RED battery cable. 4. Using 7/16 wrench, remove terminal guard. 5. Carefully remove the battery from the mower. 6. Install new battery with terminals in the same position as the old battery. 7. Reinstall terminal guard. 8. First connect RED battery cable to positive (+) battery terminal with hex bolt and hex nut. 9. Connect BLACK grounding cable to negative (-) battery terminal with remaining hex bolt and hex nut. 10. Tighten securely. 11. Close terminal access doors. 12. Lower seat. Always use protective glasses when handling the battery. IMPORTANT INFORMATION Do not attempt to open or remove caps or covers. Adding or checking level of electrolyte is not necessary. Always use two wrenches for the terminal screws WARNING! Do not short battery terminals by allowing a wrench or any other object to contact both terminals at the same time. Before connecting battery, remove metal bracelets, wristwatch bands, rings, etc. Positive terminal must be connected first to prevent sparks from accidental grounding. CZ-22 1. Terminal guard 2. Terminal access doors Battery installation
English-37 MAINTENANCE Ignition System The engine is equipped with an electronic ignition system. Only the spark plug requires maintenance. For recommended spark plug, see Technical Data. 1. Remove the ignition cable boot and clean around the spark plug. 2. Remove the spark plug with a spark plug socket wrench. 3. Check the spark plug. Replace the spark plug if fouled, the electrodes are burned and 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 .030” (0.75 mm). Adjust as necessary by bending the side electrode. 5. Reinsert the spark plug, 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. A used spark plug should be turned 1/8 of a turn from the seated position. A new spark plug should be turned 1/4 a turn from the seated position. 7. Replace the ignition cable.IMPORTANT INFORMATION Fitting the wrong spark plug type can damage the engine. Inadequately tightened spark plug can cause overheating and damage the engine. Tightening the spark plug too hard can damage the threads in the cylinder head. 8011-054 Measure the electrode gap
English-38 MAINTENANCE Checking the 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: 1. The mower deck is disengaged. 2. The steering controls are in the outer, locked neutral position. 3. The driver is sitting in the driver’s seat. 4. The parking brake is on. Make daily inspections to ensure that the safety system works by attempting to start the engine when one of the conditions is not met. Change the conditions and try again. 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. Make sure the engine stops when the parking brake is not engaged and the operator leaves the seated position. Check that the engine stops if the mower blades are engaged and the driver temporarily stands up. 8011-484 Conditions for starting IMPORTANT INFORMATION In order to be able to drive, the driver must sit in the seat and release the parking brake before the steering controls can be moved into the neutral position, otherwise the engine will stop.