Craftsman T110 Engine Manual

The Craftsman T110 is a lawn tractor equipped with a reliable single-cylinder gasoline engine, designed for residential lawn care. This manual covers the operation, maintenance, troubleshooting, and specifications of the T110 engine. Key sections include safety precautions, engine features, installation procedures, routine maintenance, troubleshooting guides, and warranty information.

Engine Features & Specifications

The Craftsman T110 engine is a 4-cycle, air-cooled, single-cylinder gasoline engine with overhead valve (OHV) design for improved efficiency and durability.

Safety Precautions

Always follow safety guidelines to prevent injury and equipment damage.

1. Read manual thoroughly before operation.
2. Operate only in well-ventilated areas to avoid carbon monoxide poisoning.
3. Keep hands, feet, and clothing away from moving parts.
4. Allow engine to cool before refueling or performing maintenance.
5. Disconnect spark plug wire before servicing.

WARNING! Gasoline is flammable. Never refuel while engine is running or hot. Store fuel in approved containers away from ignition sources.

Installation & Initial Setup

Proper installation ensures optimal performance and longevity.

1. Uncrate and inspect for shipping damage.
2. Mount engine securely to tractor frame using provided hardware.
3. Connect throttle and choke linkages according to diagram.
4. Connect battery cables (red to positive, black to negative).
5. Fill crankcase with recommended oil to proper level.
6. Add fresh unleaded gasoline to fuel tank.

CAUTION! Ensure all connections are tight and linkages move freely before starting.

Operation Instructions

Starting, running, and stopping procedures.

1. Pre-Start Check: Verify oil level, fuel level, and that mower deck is disengaged.
2. Cold Start: Set choke to FULL, turn key to START position until engine fires, then move choke to RUN.
3. Warm Start: Choke in RUN position, turn key to START.
4. Running: Allow 2-3 minutes warm-up at idle before engaging load.
5. Stopping: Disengage mower deck, return throttle to idle, turn key to OFF.

Tip: Avoid prolonged idling. Operate at recommended RPM for cutting.

Routine Maintenance

Regular maintenance schedule for optimal performance.

• Before Each Use: Check oil level, fuel level, and for loose hardware.
• Every 8 Hours: Clean air filter; check for debris around cooling fins.
• Every 50 Hours: Change engine oil and oil filter.
• Every 100 Hours: Replace air filter element; check spark plug gap (0.030").
• Every 300 Hours: Replace spark plug; clean fuel filter; check valve clearance.
• Seasonally: Sharpen/replace mower blades; check belt tension.

Fuel System

Components include fuel tank, fuel lines, fuel filter, and carburetor.

1. Use clean, fresh unleaded gasoline (ethanol content under 10% recommended).
2. Replace fuel filter every season or if clogged.
3. Clean carburetor if engine runs rough or won't idle properly.
4. Drain fuel tank for long-term storage to prevent gum formation.

WARNING! Never use gasoline containing more than 10% ethanol (E10). Higher ethanol blends can damage engine components.

Lubrication System

Pressure lubrication system with gear-driven oil pump.

• Check oil level with dipstick on level surface before each use.
• Change oil when warm for complete drainage.
• Use SAE 10W-30 for temperatures above 32°F (0°C).
• For temperatures below 32°F, use synthetic 5W-30.
• Replace oil filter with every oil change.

CAUTION! Overfilling or underfilling oil can cause engine damage.

Cooling System

Air-cooled with flywheel fan and cooling fins.

1. Keep cooling fins on cylinder head clean and free of debris.
2. Ensure air intake screen is not blocked.
3. Operate in clean conditions to prevent overheating.
4. Check for proper operation of cooling fan blades.

Tip: Overheating may indicate dirty cooling fins, low oil level, or excessive load.

Electrical System

12-volt system with battery, starter, alternator, and electronic ignition.

• Battery: 12V, 280 CCA minimum. Keep terminals clean and tight.
• Charging System: Alternator maintains battery charge during operation.
• Spark Plug: Champion RC12YC or equivalent, gap 0.030 inch.
• Safety Interlock: Prevents starting unless brake is engaged and deck disengaged.

CAUTION! Disconnect battery before performing electrical work to prevent shorts.

Storage & Winterization

Proper storage prevents damage during off-season.

1. Run engine to warm oil, then drain and refill with fresh oil.
2. Add fuel stabilizer to tank, run engine 5 minutes to circulate.
3. Disconnect spark plug wire and drain fuel from carburetor bowl.
4. Clean entire tractor, especially underside of mower deck.
5. Store in dry, covered location with battery removed and charged.

WARNING! Storing with untreated fuel can lead to carburetor clogging and difficult starting.

Troubleshooting & Repair

Service: For technical support, contact Craftsman Customer Service at 1-888-331-4569 or visit www.craftsman.com.

Reset: Disconnect battery for 30 minutes to reset electronic controller if needed.