Maintenance Schedule
Tools Needed:
- Socket set (metric/standard)
- Screwdrivers (flat and Phillips)
- Torque wrench
- Oil filter wrench
- Air compressor
- Spark plug socket
Regular Maintenance Procedures
- Pre-Operation Check: Inspect mower for loose bolts, damaged parts, and fluid leaks before each use.
- Oil Change: Change engine oil every 50 hours of operation or at beginning of each season.
- Air Filter Service: Clean air filter every 25 hours, replace every 100 hours or when damaged.
- Spark Plug Replacement: Replace spark plug every 100 hours or at beginning of each mowing season.
- Blade Sharpening: Sharpen mower blades every 25 hours for optimal cutting performance.
- Belt Inspection: Check drive and deck belts for wear every 50 hours, replace if cracked or worn.
- Hydraulic System: Check hydraulic fluid level monthly, change fluid every 300 hours.
Specifications
| Model Series | YZ42KLS / YTH24K48 |
| Type | Riding Lawn Tractor |
| Cutting Width | 42" / 48" / 54" |
| Engine Type | Briggs & Stratton / Kohler |
| Engine Power | 19.5 HP - 26 HP |
| Fuel Capacity | 2.5 - 3.5 gallons |
| Transmission | Hydrostatic / Automatic |
| Cutting Height Range | 1.5" - 4.5" |
| Turning Radius | 18 inches |
| Weight | 450 - 550 lbs |
| Max Speed | 5.5 mph forward / 2.2 mph reverse |
| Warranty | 3 years limited |
Warranty Information
- Limited Warranty: 3 years residential use
- Commercial Warranty: 1 year commercial use
- Extended Coverage: Optional extended warranty available
For warranty service, contact Husqvarna Customer Service at 1-800-487-5962 or visit Husqvarna.com
Engine Service
Oil Change Procedure
Run engine for 5 minutes to warm oil. Disconnect spark plug. Place drain pan under oil drain plug. Remove plug and drain completely. Replace with manufacturer recommended oil.
Air Filter Service
Remove air filter cover. Clean pre-filter if equipped. Replace paper filter element. For foam filters, wash in warm soapy water, dry completely, and apply filter oil before reinstalling.
Spark Plug Maintenance
Remove spark plug wire. Clean area around plug. Remove plug with spark plug socket. Check gap (0.030"). Replace with recommended plug type. Torque to 18-22 ft-lbs.
Fuel System
Use fresh gasoline with ethanol content under 10%. Add fuel stabilizer for storage. Replace fuel filter annually. Clean fuel tank sediment bowl monthly during heavy use.
Cooling System
Keep cooling fins clean and free of debris. Check cooling air intake regularly. Ensure engine shroud is properly installed. Clean cylinder head fins with compressed air.
Battery Maintenance
Check battery terminals for corrosion monthly. Clean with baking soda solution if needed. Keep battery fully charged during storage. Test battery voltage regularly.
Engine Specifications
Briggs & Stratton
Oil capacity: 1.5-2 quarts
Spark plug: RC12YC
Oil type: SAE 30
Kohler Courage
Oil capacity: 2 quarts
Spark plug: Champion RC12YC
Oil type: 10W-30
Kawasaki FR
Oil capacity: 1.8 quarts
Spark plug: BPR5ES
Oil type: 10W-40
Husqvarna
Oil capacity: 1.6 quarts
Spark plug: NGK BPR5ES
Oil type: Synthetic 5W-30
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine won't start | Empty fuel tank, dead battery, faulty spark plug | Check fuel level, test battery, inspect spark plug |
| Engine runs rough | Dirty air filter, old gasoline, clogged fuel filter | Clean/replace air filter, drain old gas, replace fuel filter |
| Poor cutting performance | Dull blades, wrong cutting height, worn deck belt | Sharpen blades, adjust cutting height, replace belt |
| Loss of power | Clogged cooling fins, dirty carburetor, low compression | Clean cooling system, service carburetor, check compression |
| Excessive vibration | Unbalanced blade, loose mounting bolts, bent spindle | Balance blade, tighten all bolts, inspect spindle |
| Hydrostatic transmission issues | Low fluid, air in system, worn drive belt | Check fluid level, bleed system, replace belt |
Common Error Codes
- E1: Oil pressure low - Check oil level and pressure sensor
- E2: Engine temperature high - Clean cooling system
- E3: Battery voltage low - Charge or replace battery
- E4: PTO engagement fault - Check PTO switch and wiring
- E5: Seat safety switch - Ensure operator is seated
- E6: Brake safety switch - Check brake pedal switch
Manual Downloads
Current Model Manuals
YZ42KLS
42" Kohler Engine
YTH24K48
48" Riding Tractor
LTH18538
38" Lawn Tractor
TS354XD
54" Commercial
Popular Previous Models
YTH2348
48" Briggs Engine
LTH1542
42" Lawn Tractor
GTH2548
48" Gear Drive
YTA24K48
48" Automatic