Craftsman T110 Engine Manual

The Craftsman T110 is a riding lawn mower equipped with a Briggs & Stratton engine, designed for residential lawn care. This manual covers essential information for safe operation, maintenance, troubleshooting, and specifications of the T110 engine. Key sections include safety guidelines, engine features, installation, operation, maintenance schedules, and troubleshooting procedures.

1. Features at a Glance 2. Installation & Setup 3. Specifications 4. Controls and Operation 5. Maintenance Schedule 6. Engine Oil & Filter 7. Air Filter & Spark Plug 8. Fuel System 9. Cooling & Exhaust 10. Storage & Winterization 11. Troubleshooting

Features at a Glance

Key components: Briggs & Stratton engine, electric start, fuel tank, air filter, oil filter, spark plug, muffler, and cooling fins.

Feature	Description
Engine Type	Briggs & Stratton single-cylinder, 4-cycle OHV
Displacement	Approx. 540cc (33 cubic inches)
Power Output	Up to 24 HP
Starting System	Electric key start with recoil backup
Fuel Type	Unleaded gasoline (87 octane or higher)
Oil Capacity	Approx. 48 oz (1.5 quarts)
Air Filtration	Dual-element paper and foam filter
Cooling System	Air-cooled with fins and blower housing
Exhaust System	Muffler with spark arrestor
Governor Type	Mechanical governor for consistent RPM

Installation & Setup

Unpack and inspect all components. Ensure mower is on a level surface before installation.

Install battery: Connect positive (+) then negative (-) terminals securely.
Add engine oil: Use SAE 30 or 10W-30; fill to dipstick "Full" mark.
Fuel system: Fill tank with fresh unleaded gasoline; avoid overfilling.
Check air filter: Ensure clean and properly seated in housing.
Attach spark plug wire: Connect to spark plug securely.

WARNING! Engine is heavy; use proper lifting techniques. Keep hands clear of moving parts during setup.

Specifications

Engine Model: Briggs & Stratton 44N877-0003-G1
Bore x Stroke: 3.12" x 2.44" (79mm x 62mm)
Compression Ratio: 8.5:1
Ignition System: Solid-state electronic ignition
Lubrication System: Splash lubrication with oil pump
Fuel Tank Capacity: 2.5 gallons (9.5 liters)
Oil Type: SAE 30 (above 40°F) or 10W-30 (all temperatures)
Spark Plug Gap: 0.030" (0.76mm)
Weight (Engine Only): Approx. 65 lbs (29.5 kg)

Controls and Operation

Access controls via operator station: ignition key, throttle/choke lever, brake pedal, and PTO engagement.

Starting Procedure: 1. Sit in seat, engage brake. 2. Set throttle to "Fast" position. 3. Turn key to "Start" until engine fires. 4. Allow warm-up for 1-2 minutes.

Stopping Procedure: 1. Disengage PTO. 2. Move throttle to "Slow". 3. Turn key to "Off". 4. Remove key.

Safety Features: Seat safety switch (engine stops if operator leaves seat with PTO engaged), blade brake clutch, and engine kill switch.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Interval	Task
Before each use	Check oil level, inspect for leaks, check air filter
Every 8 hours	Clean around muffler and cooling fins
Every 50 hours	Change engine oil, check spark plug
Every 100 hours	Replace air filter, check fuel filter
Every 300 hours	Replace spark plug, check valve clearance
Seasonally	Winterize or prepare for storage

Engine Oil & Filter

Use high-quality detergent oil classified "For Service SF, SG, SH, SJ" or higher.

Run engine to warm oil for easier drainage.
Place drain pan under oil drain plug.
Remove drain plug and allow oil to drain completely.
Replace drain plug and tighten securely.
Refill with recommended oil to proper level.
Replace oil filter every 100 hours or as needed.

CAUTION! Hot oil can cause burns. Allow engine to cool slightly before draining.

Air Filter & Spark Plug

Air Filter Service: Remove housing cover, clean foam pre-filter in warm soapy water, replace paper element if dirty or damaged.

Spark Plug Service: Remove spark plug wire, clean area, remove plug with socket. Check gap (0.030"), adjust if necessary. Replace if electrodes are worn or cracked.

Tip: Always use genuine Briggs & Stratton replacement parts for optimal performance.

Fuel System

Use fresh unleaded gasoline with minimum 87 octane. Add fuel stabilizer for storage over 30 days.

Check fuel lines for cracks or leaks regularly.
Replace fuel filter annually or if clogged.
Clean fuel tank sediment cup if equipped.
Ensure fuel cap vent is clear.

WARNING! Gasoline is flammable. No smoking during refueling. Refuel outdoors only.

Cooling & Exhaust

Air-cooled engine requires clear cooling fins and proper airflow.

Regularly remove grass clippings, dirt, and debris from cooling fins.
Inspect blower housing for damage or obstructions.
Check muffler and spark arrestor screen for carbon buildup.
Ensure exhaust system is securely mounted and not leaking.

CAUTION! Muffler gets extremely hot during operation. Allow to cool before touching.

Storage & Winterization

Proper storage prevents fuel system issues and corrosion.

Add fuel stabilizer to tank and run engine for 5 minutes.
Change engine oil and filter.
Remove spark plug, add 1 tablespoon of oil to cylinder, crank engine slowly, reinstall plug.
Clean entire engine and cooling fins.
Store in dry, covered location.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Empty fuel tank, bad spark plug, clogged fuel filter	Check fuel level, inspect spark plug, replace fuel filter.
Engine runs rough	Dirty air filter, water in fuel, incorrect oil level	Clean/replace air filter, drain fuel tank, check oil level.
Engine overheats	Clogged cooling fins, low oil level, dirty air filter	Clean cooling fins, add oil, service air filter.
Excessive vibration	Loose mounting bolts, damaged blade, worn engine mounts	Tighten mounting bolts, inspect/replace blade, check mounts.
Loss of power	Clogged fuel filter, dirty carburetor, worn spark plug	Replace fuel filter, clean carburetor, replace spark plug.

Reset: Disconnect battery for 30 seconds to reset electronic ignition system if applicable.

Service: For technical support, contact Briggs & Stratton at 1-800-444-7774 or visit www.briggsandstratton.com