The Murray 20112X92E1 is a 21-inch push lawn mower featuring a 190cc Briggs & Stratton engine, 3-in-1 mulching/bagging/side discharge capability, single-lever height adjustment (1.5-3.75 inches), durable steel deck, easy-start system, and rear-wheel drive. This manual covers safety instructions, assembly, operation, maintenance, troubleshooting, and storage procedures to ensure optimal performance and longevity of your mower.
Key components: 190cc Briggs & Stratton engine, 21-inch steel cutting deck, rear bagger, mulch plug, side discharge chute, single-lever height adjuster, and recoil start system.
| Feature | Description |
|---|---|
| Engine | 190cc Briggs & Stratton 4-cycle engine |
| Cutting Width | 21 inches |
| Cutting Height | 1.5 to 3.75 inches (6 positions) |
| Deck Material | Durable powder-coated steel |
| Drive System | Rear-wheel drive |
| Start System | Recoil pull-start |
| Capability | 3-in-1 (Mulch, Bag, Side Discharge) |
| Wheels | 8-inch rear, 7-inch front |
| Fuel Tank | 1.0 quart capacity |
| Oil Type | SAE 30 (summer) / 5W-30 (winter) |
Unpack all parts from box. Ensure all components are present before assembly.
WARNING! Wear gloves during assembly. Do not start engine until assembly is complete and all fasteners are tightened.
Read all instructions before operating. Always wear appropriate safety gear.
DANGER! Keep hands and feet away from rotating blade. Do not operate on slopes greater than 15 degrees.
Main controls: Blade control handle (deadman switch), throttle control, primer bulb, recoil starter grip.
Starting Procedure:
Stopping: Release blade control handle. Move throttle to STOP position.
Operation Tips: Mow at steady pace. Overlap passes by 2-3 inches for even cut.
Single-lever adjustment for all four wheels simultaneously.
Recommended Settings: 2.5" for normal lawns, 3" during hot/dry conditions, 1.5"-2" for final fall mowing.
Configure for mulching, bagging, or side discharge.
Note: Always use appropriate configuration. Never operate with both mulch plug and bag attached simultaneously.
| Maintenance Task | Frequency |
|---|---|
| Check engine oil level | Before each use |
| Clean underside of deck | After each use |
| Check blade sharpness/balance | Every 25 hours |
| Change engine oil | First 5 hours, then every 50 hours |
| Replace air filter | Every 25 hours (more often in dusty conditions) |
| Replace spark plug | Every 100 hours |
| Lubricate wheel bearings | Every 50 hours |
| Check/replace drive belt | Every 100 hours |
Proper storage extends mower life.
CAUTION! Never store mower with fuel in tank indoors or in enclosed spaces.
Murray 20112X92E1 comes with a 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, misuse, improper maintenance, or commercial use. To make a warranty claim, contact Murray customer service at 1-800-800-7310 or visit www.murray.com. Have model and serial numbers ready (located on engine housing).
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | No fuel, stale fuel, spark plug disconnected, clogged air filter | Add fresh fuel, check spark plug wire, clean/replace air filter, press primer bulb 3 times. |
| Engine runs rough or stalls | Dirty air filter, old fuel, water in fuel | Replace air filter, drain and replace with fresh fuel. |
| Uneven cutting | Dull blade, uneven tire pressure, deck clogged | Sharpen/balance blade, check tire pressure, clean deck underside. |
| Excessive vibration | Bent blade, loose blade bolt, debris wrapped around blade | Stop engine, inspect blade for damage or debris, tighten blade bolt (torque: 450-600 in-lb). |
| Loss of power | Clogged fuel filter, dirty carburetor, low oil level | Check oil level, clean fuel filter, have carburetor serviced if needed. |
| Wheels not turning | Drive belt broken or slipped off pulley | Inspect drive belt, replace if worn or broken. |
For Service: 1-800-800-7310; www.murray.com