Craftsman R110 Riding Mower Repair Manual

The Craftsman R110 is a 11 HP, 42-inch deck riding lawn mower designed for residential use. This manual provides essential repair, maintenance, and troubleshooting information for the engine, transmission, cutting deck, electrical system, and safety features. Below are key sections covering safety, specifications, common repairs, maintenance schedules, and troubleshooting procedures.

1. Features at a Glance 2. Safety Precautions 3. Specifications 4. Maintenance Schedule 5. Engine Repair 6. Transmission & Drive System 7. Cutting Deck & Blade Service 8. Electrical System 9. Troubleshooting 10. Parts & Diagrams 11. Warranty & Support

Features at a Glance

Key components: 11 HP Briggs & Stratton engine, 42-inch stamped steel cutting deck, 6-speed manual transmission, manual PTO engagement, adjustable cutting height, and ergonomic controls.

Feature	Description
Engine	11 HP Briggs & Stratton, single-cylinder, OHV
Cutting Width	42 inches
Transmission	6-speed manual gear drive
Fuel Capacity	1.5 gallons
Cutting Height Adjustment	Lever-operated, 1-4 inches
Deck Engagement	Manual PTO lever
Seat	High-back, adjustable
Tires	Front: 15x6.00-6, Rear: 20x10.00-8
Battery	12V, 180 CCA
Weight	Approx. 450 lbs

Safety Precautions

Always follow safety guidelines to prevent injury or damage.

Disconnect spark plug wire before performing any repairs.
Work in a well-ventilated area when handling fuel or batteries.
Use jack stands if lifting the mower; never rely solely on a hydraulic jack.
Allow engine to cool completely before servicing.
Wear safety glasses and gloves when handling blades or sharp components.

WARNING! Gasoline is flammable; keep away from sparks or open flames. Ensure mower is on level ground before servicing.

Specifications

Model: Craftsman R110
Engine: 11 HP Briggs & Stratton, 344cc, OHV
Cutting Deck: 42-inch stamped steel, 3-blade
Transmission: 6-speed manual, gear drive
Fuel Type: Unleaded gasoline (87 octane or higher)
Oil Capacity: 1.5 quarts (SAE 30 or 10W-30)
Battery: 12V, 180 CCA, Group U1
Dimensions: 68" L x 42" W x 42" H
Max Tow Capacity: Not recommended for towing

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Interval	Task
Before each use	Check tire pressure, inspect blades for damage, check oil level
Every 25 hours	Change engine oil, clean air filter, check spark plug
Every 50 hours	Replace air filter, grease fittings, check battery terminals
Every 100 hours	Replace spark plug, inspect drive belt, check transmission fluid
Seasonal	Sharpen blades, clean underside of deck, stabilize fuel or drain

Tip: Refer to engine manual for specific Briggs & Stratton maintenance procedures.

Engine Repair

Common engine issues and repair steps for the 11 HP Briggs & Stratton.

Engine won't start: Check fuel level, spark plug connection, and carburetor.
Oil change: Drain oil via drain plug, refill with 1.5 quarts SAE 30.
Air filter replacement: Remove cover, replace foam or paper filter.
Carburetor cleaning: Remove bowl, clean jets with carburetor cleaner.
Spark plug replacement: Gap to 0.030 inches, torque to 18 ft-lbs.

WARNING! Always disconnect battery and spark plug before engine repair.

Transmission & Drive System

Manual transmission service and drive belt replacement.

Check transmission fluid level via dipstick (if equipped).
Inspect drive belt for cracks or wear; replace if damaged.
Adjust tension on drive belt via idler pulley.
Lubricate shift linkage with light oil.
If transmission slips, check for worn gears or low fluid.

Note: The R110 uses a gear-driven transmission; no hydrostatic fluid to change.

Cutting Deck & Blade Service

Removing, sharpening, and balancing blades; deck cleaning and leveling.

Disconnect spark plug wire.
Raise deck to highest setting and secure with blocks.
Remove blades with a 1/2-inch socket (may require penetrating oil).
Sharpen blades at 25-degree angle; balance with blade balancer.
Clean deck underside with scraper and hose.
Level deck: Measure blade height side-to-side and front-to-back.

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

Electrical System

Battery, starter, and wiring diagnostics.

Battery testing: Use multimeter; should read 12.6V fully charged.
Starter solenoid: Clicking noise may indicate bad solenoid.
Fuse: Check 20-amp fuse near battery.
Wiring: Inspect for loose or corroded connections, especially ground wire.
Charging: Battery charges via engine alternator; test voltage while running.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine cranks but won't start	Bad fuel, clogged carburetor, faulty spark plug	Replace fuel, clean carburetor, check spark plug.
Poor cutting performance	Dull blades, deck clogged, incorrect height	Sharpen blades, clean deck, adjust cutting height.
Vibration or shaking	Unbalanced blade, loose blade, damaged spindle	Balance or replace blade, tighten bolts, inspect spindle.
Transmission slips or noisy	Low fluid, worn gears, damaged belt	Check fluid, inspect gears, replace drive belt.
Battery won't hold charge	Old battery, bad alternator, parasitic draw	Load test battery, check charging system, inspect wiring.

Parts & Diagrams

Refer to Craftsman parts diagrams for replacement part numbers. Common parts:

Blade: Part # 134149
Air Filter: Part # 142136
Drive Belt: Part # 144959
Spark Plug: Champion RC12YC
Battery: Group U1, 12V 180 CCA

Visit Sears Parts Direct or contact Craftsman support for diagrams.

Warranty & Support

Craftsman R110 limited warranty: 2 years residential use. Keep receipt for warranty claims.

Support: Contact Craftsman at 1-888-331-4569 or visit www.craftsman.com. For repair assistance, consult a certified technician.

Safety Recall Check: Visit www.cpsc.gov or Craftsman website for any recalls.