Craftsman T110 Repair Manual

The Craftsman T110 is a popular riding lawn mower model known for its reliability and ease of maintenance. This repair manual provides comprehensive instructions for troubleshooting, servicing, and repairing the T110's key systems, including the engine, transmission, cutting deck, electrical system, and controls. Below are essential sections covering safety, specifications, maintenance procedures, common repairs, and troubleshooting.

Features at a Glance

Key components: Briggs & Stratton engine, hydrostatic transmission, 42-inch cutting deck, electric start, manual PTO engagement, adjustable seat, and durable steel frame.

Feature	Description
Engine	Briggs & Stratton 540cc OHV engine, 17.5 HP
Transmission	Hydrostatic drive, single-speed forward/reverse
Cutting Deck	42-inch stamped steel, 3-blade system
Starting System	Electric key start with 12V battery
Fuel Capacity	2.5 gallons
Cutting Height	Adjustable 1.5 to 4 inches
Drive System	Rear-wheel drive with differential
Controls	Foot pedal for speed, lever for direction
Seat	High-back, adjustable fore/aft
Warranty	2-year limited warranty

Safety Precautions

Always follow safety guidelines to prevent injury or damage.

1. Disconnect spark plug wire before performing any repairs.
2. Work in a well-ventilated area when handling fuel or batteries.
3. Use jack stands to support the mower; never rely solely on a hydraulic jack.
4. Wear safety glasses, gloves, and sturdy footwear.
5. Allow engine to cool completely before servicing.

WARNING! Gasoline is flammable; keep away from sparks or open flames. Ensure the mower is on level ground when lifting.

Specifications

• Model: Craftsman T110
• Engine: Briggs & Stratton 540cc, 17.5 HP, OHV
• Transmission: Hydrostatic, infinite forward/reverse speeds
• Cutting Width: 42 inches
• Cutting Height: 1.5 to 4 inches (6 positions)
• Fuel Type: Unleaded gasoline (87 octane or higher)
• Oil Capacity: 1.5 quarts (SAE 30 or 10W-30)
• Battery: 12V, 280 CCA
• Tire Size: Front 15x6.00-6, Rear 20x10.00-8
• Weight: Approx. 450 lbs

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Before Each Use: Check tire pressure, inspect for loose bolts, ensure blades are sharp and secure.

Every 25 Hours: Change engine oil, check air filter, inspect spark plug.

Every 50 Hours: Replace air filter, check battery terminals, lubricate pivot points.

Every 100 Hours: Change transmission fluid, replace fuel filter, inspect drive belts.

Seasonally: Sharpen/replace blades, check deck level, clean underside of deck, winterize if storing.

Engine Service

Common engine repairs: oil change, air filter replacement, spark plug service, carburetor cleaning.

1. Oil Change: Run engine to warm oil, drain via plug, refill with 1.5 quarts of SAE 30.
2. Air Filter: Remove cover, replace paper filter; clean foam pre-filter if present.
3. Spark Plug: Gap to 0.030 inches; replace if worn or fouled.
4. Carburetor: Clean jets and bowl if engine runs rough or stalls.
5. Fuel System: Replace fuel filter annually; use fuel stabilizer for storage.

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

Transmission & Drive System

The hydrostatic transmission requires periodic fluid checks and belt adjustments.

1. Check transmission fluid level with dipstick; add fluid if low.
2. Inspect drive belt for wear, cracks, or glazing; replace if damaged.
3. Adjust tension on drive belt according to manual specifications.
4. Test drive engagement; adjust linkage if mower does not move smoothly.
5. Lubricate axle bearings and pivot points every 50 hours.

CAUTION! Do not overfill transmission fluid; use recommended type only.

Cutting Deck Repair

Maintain cutting deck for even, clean cuts.

1. Blade Sharpening: Remove blades; sharpen at 30-degree angle; balance before reinstalling.
2. Deck Leveling: Adjust front and rear hangers to ensure deck is level side-to-side and front-to-back.
3. Belt Replacement: Release tension, remove old belt, route new belt per diagram.
4. Spindle Service: Grease spindles regularly; replace if bearings are noisy or loose.
5. Deck Cleaning: Scrape off grass buildup after each use to prevent rust and corrosion.

WARNING! Always disconnect spark plug before working under deck.

Electrical System

Diagnose and repair electrical issues: battery, starter, wiring, switches.

1. Battery: Test voltage (should be 12.6V+); clean terminals; charge if low.
2. Starter: Check solenoid clicks; test starter motor with jumper cables.
3. Safety Switches: Verify seat, brake, and PTO switches are functioning.
4. Wiring: Inspect for frayed wires, loose connections, or corrosion.
5. Fuses: Check 20-amp fuse in wiring harness; replace if blown.

Tip: Use a multimeter for accurate electrical diagnostics.

Controls & Adjustments

Proper adjustment ensures smooth operation.

• Throttle/Choke: Adjust cable for full range of motion.
• Brake: Adjust pedal free play to 1 inch.
• Steering: Tighten steering wheel nut if loose; check tie rods.
• Seat: Adjust fore/aft for operator comfort and safety switch engagement.
• PTO Engagement: Adjust lever for positive clutch engagement.

Storage & Winterization

Prepare mower for long-term storage to prevent damage.

1. Add fuel stabilizer to tank; run engine for 5 minutes to circulate.
2. Change oil and filter to remove contaminants.
3. Remove battery; store in cool, dry place; charge monthly.
4. Clean entire mower, especially underside of deck.
5. Store in a dry, covered area; cover with breathable tarp.

CAUTION! Do not store with fuel in carburetor; drain or run dry.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Dead battery, bad spark plug, clogged fuel filter	Charge/replace battery; check spark plug; replace fuel filter.
Poor cutting performance	Dull blades, uneven deck, slow engine RPM	Sharpen blades; level deck; adjust throttle to full speed.
Loss of power	Dirty air filter, old fuel, clogged carburetor	Replace air filter; drain old fuel; clean carburetor.
Transmission slips	Low fluid, worn belt, adjustment needed	Check fluid level; inspect/replace drive belt; adjust linkage.
Excessive vibration	Unbalanced blade, loose spindle, damaged deck	Balance or replace blade; tighten spindle bolts; inspect deck for cracks.

Reset: Disconnect battery for 10 minutes to reset electrical system if needed.

Service Support: For genuine parts and technical assistance, contact Craftsman at 1-888-331-4569 or visit www.craftsman.com.