Troy-Bilt S979 Lawn Mower Manual

The Troy-Bilt S979 is a powerful lawn mower designed for efficient grass cutting with a 21-inch cutting deck, adjustable cutting heights, and a reliable engine. This manual provides essential information regarding safety, features, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Information 3. Operation Instructions 4. Specifications 5. Maintenance 6. Troubleshooting

Features at a Glance

The Troy-Bilt S979 lawn mower includes features such as a powerful engine, adjustable cutting heights, and a durable steel deck for long-lasting performance.

Feature	Description
21-inch Cutting Deck	Provides a wide cutting path for efficient mowing.
Adjustable Cutting Heights	Allows for customization of grass length.
Powerful Engine	Ensures reliable performance and easy starting.
Durable Steel Deck	Offers strength and longevity for tough mowing conditions.
Easy Maneuverability	Designed for easy handling around obstacles.

Safety Information

Always wear appropriate safety gear when operating the lawn mower. Ensure that the area is clear of debris and obstacles before mowing.

Read the manual thoroughly before use.
Keep hands and feet away from the cutting area.
Do not operate in wet conditions.
Ensure all safety features are functional before use.

Operation Instructions

To operate the Troy-Bilt S979, follow these steps:

Check oil and fuel levels before starting.
Adjust the cutting height as needed.
Start the engine and allow it to warm up.
Begin mowing in a straight line, overlapping each pass slightly.

CAUTION! Always be aware of your surroundings while mowing.

Specifications

Engine Type: 4-cycle gas engine.
Cutting Width: 21 inches.
Cutting Heights: 1.25 to 3.75 inches (5 positions).
Weight: Approximately 60 lbs.
Fuel Capacity: 1.5 quarts.
Deck Material: Steel.
Warranty: 2 years limited warranty.

Maintenance

Regular maintenance is essential for optimal performance. Follow these guidelines:

Change the oil every 50 hours of operation.
Clean the air filter regularly.
Sharpen the blades at the beginning of each season.
Inspect and replace spark plugs as needed.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel or clogged filter	Check fuel level and replace filter if necessary.
Uneven cutting	Dull blades	Sharpen or replace blades.
Excessive vibration	Loose parts	Tighten all screws and bolts.
Grass clippings not discharging	Clogged deck	Clean the underside of the deck.

Service: For further assistance, contact Troy-Bilt customer service.