Husqvarna YT42LS Owner's Manual

The Husqvarna YT42LS is a 42-inch riding lawn mower featuring a powerful engine, hydrostatic transmission, electric PTO engagement, and a comfortable high-back seat. It is designed for efficient mowing of medium to large lawns with its durable steel deck, adjustable cutting height, and ergonomic controls. Below are key sections for safety, features, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Assembly & Setup 3. Controls & Operation 4. Specifications 5. Maintenance Schedule 6. Deck Adjustment & Mowing 7. Storage & Winterization 8. Safety Information 9. Warranty & Support 10. Troubleshooting

Features at a Glance

Key components: 42-inch stamped steel cutting deck, Hydrostatic transmission, Electric PTO (Power Take-Off), High-back seat, Headlights, Cup holder, and Hour meter.

Feature	Description
Cutting Width	42 inches for efficient mowing coverage
Transmission	Hydrostatic, single-pedal control for forward/reverse
Engine	High-performance gasoline engine (specific model varies)
Cutting Height Adjustment	Lever for 6 positions (1.5-4 inches)
PTO Engagement	Electric switch for easy blade engagement
Deck Material	Stamped steel for durability
Seat	High-back, adjustable for operator comfort
Fuel Capacity	Approximately 2.5 gallons
Headlights	For low-light operation
Hour Meter	Tracks usage for maintenance scheduling

Assembly & Setup

Unpack and inspect all parts. Assembly requires basic tools.

Install steering wheel: Align and secure with provided hardware.
Attach seat: Mount seat onto frame using bolts and washers.
Connect battery: Attach cables (red positive, black negative).
Check tire pressure: Inflate to recommended PSI (see sidewall).
Add engine oil and fuel: Use types specified in Specifications.

WARNING! Mower is heavy; use assistance during assembly. Ensure all fasteners are tight before operation.

Controls & Operation

Familiarize yourself with controls before starting.

Ignition & Safety: Insert key, ensure parking brake is set, PTO is disengaged, and operator is seated.
Starting: Turn key to START; release when engine starts.
Driving: Release parking brake; press forward pedal to move forward, reverse pedal to back up.
Mowing: Engage PTO switch to lower and spin blades; adjust speed as needed.
Stopping: Disengage PTO, set parking brake, turn key to OFF.

CAUTION! Always operate on clear, dry terrain. Keep hands and feet away from moving parts.

Specifications

Model: YT42LS
Cutting Width: 42 inches
Deck Type: Stamped steel
Engine: Husqvarna gasoline engine (exact HP varies by model year)
Transmission: Hydrostatic, infinite speeds forward and reverse
Fuel Type: Unleaded gasoline (87 octane or higher)
Oil Type: SAE 30 (above 40°F) or 10W-30 (all temperatures)
Cutting Height Range: 1.5 to 4 inches (6 positions)
Turning Radius: Approximately 18 inches
Weight: Varies; refer to shipping documentation

Maintenance Schedule

Regular maintenance ensures longevity and performance.

Before Each Use: Check tire pressure, engine oil level, fuel level, and for debris under deck.

Every 8 Hours/Weekly: Clean deck underside, check blade condition and sharpness.

Every 50 Hours: Change engine oil, replace oil filter (if equipped), check air filter.

Every 100 Hours: Replace spark plug, check battery terminals and charge.

Seasonally: Grease fittings, inspect belts for wear, sharpen or replace blades.

Deck Adjustment & Mowing

Proper deck leveling ensures even cut.

Park on level surface, disengage PTO, set parking brake.
Adjust cutting height using lever (check all wheels for equal height).
Level deck side-to-side and front-to-rear using adjustment rods (see manual for specifics).
For best results, mow when grass is dry, overlap passes slightly, and vary mowing pattern.

Tip: Avoid mowing in reverse when possible; if necessary, ensure area behind is clear.

Storage & Winterization

Prepare mower for off-season storage.

Clean thoroughly: Remove grass, dirt, and debris from deck, engine, and chassis.
Fuel system: Add fuel stabilizer to tank, run engine 5 minutes, or drain fuel completely.
Battery: Disconnect and store in cool, dry place; charge periodically.
Engine: Change oil, remove spark plug and add a teaspoon of oil to cylinder, then pull starter cord slowly to coat.
Store in dry, covered location, preferably on blocks to relieve tire pressure.

WARNING! Never store with fuel in tank untreated; it can degrade and damage engine.

Safety Information

Read and understand all safety labels on machine.

Always wear eye protection, sturdy shoes, and long pants.
Clear mowing area of sticks, stones, and debris.
Never carry passengers; keep bystanders away.
Disengage PTO and wait for blades to stop before crossing drives or gravel.
Use extreme caution on slopes; mow up and down, not across.
Never leave machine unattended with engine running.

DANGER! Blades are sharp and rotate at high speed. Keep hands and feet away until engine is off and key is removed.

Warranty & Support

Husqvarna limited warranty applies; see separate warranty document for terms and duration. For technical support, parts, or service, contact an authorized Husqvarna dealer. Register your product online at www.husqvarna.com. Customer support: 1-800-487-5962.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Parking brake not set, PTO engaged, dead battery, empty fuel tank	Ensure brake set & PTO off; check battery charge; add fuel.
Poor cutting performance	Dull blades, deck not level, engine speed too low, clogged deck	Sharpen/replace blades; level deck; clean underside; run at full throttle.
Excessive vibration	Damaged or unbalanced blade, loose hardware, debris	Inspect blade for damage; tighten bolts; remove debris.
Loss of power	Dirty air filter, old fuel, clogged fuel filter	Replace air filter; drain old fuel; replace fuel filter.
Hydrostatic transmission issues	Low fluid, drive belt worn or loose	Check fluid level; inspect and adjust/replace drive belt.

Reset: For electrical issues, disconnect battery for 5 minutes then reconnect.

Service: 1-800-487-5962; www.husqvarna.com