Craftsman T110 Riding Mower Repair Manual

The Craftsman T110 is a 42-inch deck riding lawn mower featuring a 19.5 HP Briggs & Stratton engine, hydrostatic transmission, 6-speed gear drive, electric start, and a comfortable high-back seat. This repair manual covers essential maintenance, troubleshooting, and repair procedures for the engine, transmission, deck, electrical system, and controls. Below are key sections for safety, specifications, maintenance schedules, troubleshooting, and step-by-step repair guides.

1. Features at a Glance 2. Safety Precautions 3. Specifications 4. Maintenance Schedule 5. Engine Repair 6. Transmission Service 7. Deck & Blade Maintenance 8. Electrical System 9. Controls & Adjustments 10. Storage & Winterization 11. Troubleshooting

Features at a Glance

Key components: 19.5 HP Briggs & Stratton engine, Hydrostatic transmission, 42-inch stamped steel deck, Electric start, High-back seat, 6-speed gear drive option, Mulching capability, Headlights.

Feature	Description
Engine	19.5 HP Briggs & Stratton, single-cylinder, OHV
Transmission	Hydrostatic (T110 model) / 6-speed gear drive (T110 variant)
Cutting Width	42 inches
Deck Type	Stamped steel, 3-blade
Starting System	Electric key start
Seat	High-back, adjustable
Fuel Capacity	2.5 gallons
Drive System	Rear-wheel drive
Headlights	Standard for low-light operation
Mulching Kit	Optional (part # 123456)

Safety Precautions

Always follow safety guidelines to prevent injury or damage.

Disconnect spark plug wire before performing any maintenance.
Operate mower only in well-ventilated areas to avoid carbon monoxide poisoning.
Wear safety glasses, gloves, and sturdy footwear during repairs.
Use jack stands when lifting mower; never rely solely on hydraulic jack.
Allow engine to cool completely before servicing.

WARNING! Gasoline is flammable; store in approved container away from sparks or flames. Keep hands and feet away from moving parts.

Specifications

Engine: 19.5 HP Briggs & Stratton, Model 44N877, OHV, air-cooled.
Transmission: Hydrostatic (model T110H) / 6-speed manual (model T110).
Cutting Deck: 42-inch, stamped steel, 3-blade, belt-driven.
Fuel Type: Unleaded gasoline (87 octane minimum).
Oil Capacity: 1.5 quarts (SAE 30 or 10W-30).
Tire Size: Front 15x6.00-6, Rear 20x10.00-8.
Weight: 450 lbs (approx.).
Battery: 12V, 280 CCA.
Warranty: 2-year limited warranty.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Before Each Use: Check tire pressure, fuel level, and for loose bolts.

Every 8 Hours: Check engine oil level; clean deck of grass clippings.

Every 50 Hours: Change engine oil (more frequently in dusty conditions).

Every 100 Hours: Replace air filter; check spark plug; inspect drive belt.

Seasonally: Sharpen blades; lubricate pivot points; check battery charge.

CAUTION! Use only Craftsman-approved parts for replacements.

Engine Repair

Common engine issues: hard starting, loss of power, overheating.

Oil Change: Drain oil via plug; refill with 1.5 quarts SAE 30.
Air Filter: Replace foam or paper element if dirty.
Spark Plug: Gap 0.030 inches; replace if worn or fouled.
Carburetor Adjustment: Adjust idle and main jet screws per manual.
Fuel System: Clean fuel filter; inspect lines for cracks.

Tip: Always use fresh gasoline; add fuel stabilizer for storage.

Transmission Service

Hydrostatic transmission maintenance: fluid check, belt adjustment.

Check transmission fluid level (if applicable).
Inspect drive belt for wear; replace if cracked or glazed.
Adjust tension on hydrostatic control linkage for smooth operation.
For gear drive models, check gear oil and shift linkage.

WARNING! Do not over-tighten belts; refer to manual for proper tension specs.

Deck & Blade Maintenance

Deck removal, blade sharpening, and belt replacement.

Disconnect spark plug wire.
Raise deck to highest position; remove deck mounting bolts.
Sharpen blades at 25-degree angle; balance after sharpening.
Replace deck belt if worn; route per diagram under mower.
Clean underside of deck after each use to prevent rust.

CAUTION! Wear heavy gloves when handling blades; they are sharp.

Electrical System

Battery, starter, and wiring diagnostics.

Battery: Test voltage (should be 12.6V); clean terminals; charge if below 12V.

Starter: Check solenoid connections; test starter motor draw.

Safety Switches: Test seat, brake, and PTO switches for continuity.

Fuses: Check 20A fuse in wiring harness; replace if blown.

Controls & Adjustments

Steering, brake, and throttle adjustments.

Steering: Adjust tie rods for straight tracking.
Brake: Adjust brake pedal free play to 1 inch.
Throttle: Set governor to maintain 3400 RPM under load.
PTO Clutch: Check engagement; replace if slipping.

Tip: Lubricate control linkages with light oil periodically.

Storage & Winterization

Prepare mower for off-season storage.

Drain or stabilize fuel; run engine to circulate treated fuel.
Change oil and filter.
Remove battery; store in cool, dry place; charge monthly.
Clean entire mower; apply light coat of oil to metal surfaces.
Store in dry, covered area.

CAUTION! Never store mower with gasoline in tank over 30 days without stabilizer.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Dead battery, faulty spark plug, clogged fuel filter	Charge battery; replace spark plug; clean fuel filter.
Loss of power	Dirty air filter, old gasoline, dull blades	Replace air filter; use fresh fuel; sharpen blades.
Uneven cutting	Deck not level, worn blades, low tire pressure	Level deck; replace blades; inflate tires to 14 PSI.
Transmission slips	Low fluid, worn drive belt	Check fluid; replace drive belt.
Excessive vibration	Unbalanced blade, loose mounting bolts	Balance blade; tighten all deck bolts.

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

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