Husqvarna Lawn Mower LC121P Manual

The Husqvarna LC121P is a 21-inch self-propelled gas lawn mower featuring a 160cc Briggs & Stratton engine, 3-in-1 cutting system (mulch, bag, side discharge), 6-position single-lever height adjustment, rear-wheel drive with variable speed control, and easy-start technology. This manual covers safety instructions, assembly, operation, maintenance, troubleshooting, and storage guidelines for optimal performance and longevity.

Features at a Glance

Key components: 160cc Briggs & Stratton engine, 21-inch steel deck, 3-in-1 cutting system, rear-wheel drive, single-lever height adjustment, variable speed control, and foldable handle.

Assembly Instructions

Unpack all parts and inspect for damage. Assembly requires basic tools (included).

1. Attach handle: Align lower handle sections with deck brackets, secure with bolts and wing nuts.
2. Install upper handle: Connect to lower handle using provided knobs, ensure secure fit.
3. Attach grass bag: Hook bag frame onto rear deck brackets, secure with retaining rod.
4. Install side discharge chute: Align with opening on right side of deck, secure with wing nut.
5. Add engine oil: Fill with SAE 30 detergent oil (check dipstick for proper level).
6. Add fuel: Use fresh unleaded gasoline with minimum 87 octane (no ethanol recommended).

WARNING! Do not add fuel or oil while engine is hot. Ensure all fasteners are tight before operation.

Safety Information

Read all instructions before operating. Always wear appropriate safety gear.

1. Clear mowing area of stones, toys, and other objects that could be thrown.
2. Never allow children or pets in mowing area.
3. Do not mow wet grass or in poor lighting conditions.
4. Always turn off engine and remove spark plug wire before performing maintenance.
5. Use hearing protection and safety glasses during operation.
6. Never operate mower without proper guards or safety devices in place.

DANGER! Gasoline is highly flammable. Store in approved container away from heat and sparks.

Specifications

• Model: Husqvarna LC121P
• Engine: Briggs & Stratton 450E Series, 160cc, OHV
• Cutting Width: 21 inches (53 cm)
• Cutting Height: 1.25-3.75 inches (6 positions)
• Drive System: Rear-wheel self-propelled, variable speed (0-3 mph)
• Cutting Options: Mulch, Bag (2.1 bushel capacity), Side Discharge
• Wheels: 8-inch rear, 7-inch front
• Fuel Type: Unleaded gasoline, minimum 87 octane
• Oil Type: SAE 30 detergent oil (20 oz capacity)
• Warranty: 2-year limited warranty

Controls and Operation

Main controls: Engine control lever, drive control lever, height adjustment lever, and speed control.

Starting Procedure:

1. Check oil and fuel levels.
2. Push primer bulb 3 times (cold engine).
3. Set engine control lever to START position.
4. Pull recoil starter handle firmly.
5. Once started, move lever to RUN position.

Self-Propelled Operation: Squeeze drive control lever against handle to engage wheels. Adjust speed with variable speed control. Release to stop drive.

Height Adjustment: Move single lever to desired position (1-6) for cutting height.

Cutting System Setup

Configure for mulching, bagging, or side discharge as needed.

1. Mulching: Install mulch plug in discharge opening. Use for fine clippings that fertilize lawn.
2. Bagging: Attach grass bag assembly. Empty when bag is 2/3 full for optimal performance.
3. Side Discharge: Install discharge chute. Use for cutting tall or wet grass.

Tip: Keep cutting deck clean. After each use, scrape off grass buildup from underside.

Maintenance Schedule

Note: Always disconnect spark plug before performing maintenance.

Engine Care

Proper engine maintenance ensures long life and reliable performance.

1. Oil Change: Run engine 5 minutes to warm oil. Drain via dipstick tube. Refill with 20 oz SAE 30 detergent oil.
2. Air Filter: Remove cover, clean foam pre-filter in soapy water, replace paper filter if dirty.
3. Spark Plug: Clean with wire brush, gap to 0.030 inches. Replace if electrodes are worn.
4. Fuel System: Use fuel stabilizer if storing over 30 days. Drain fuel tank for long-term storage.

CAUTION! Never run engine without air filter. This can cause serious engine damage.

Storage Guidelines

Proper storage prevents corrosion and starting problems.

1. Clean entire mower, especially underside of deck.
2. Drain fuel tank or add fuel stabilizer.
3. Change engine oil if near due for change.
4. Remove spark plug, add 1 tablespoon of oil to cylinder, pull starter cord slowly to distribute.
5. Store in dry, covered area away from moisture.
6. Fold handle down for compact storage.

WARNING! Gasoline left in tank over 30 days can form gums that clog fuel system.

Warranty Information

Husqvarna LC121P comes with 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, improper maintenance, or commercial use. Keep original receipt as proof of purchase. For warranty service, contact authorized Husqvarna dealer or call 1-800-487-5962. Register product online at www.husqvarna.com for faster service.

Troubleshooting

Service: For technical support, call 1-800-487-5962 or visit www.husqvarna.com