Murray MD2250 Lawn Mower Manual

The Murray MD2250 is a 22-inch, 190cc gas-powered push lawn mower featuring a Briggs & Stratton engine, 3-in-1 mulching/bagging/side discharge capability, 6-position single-lever height adjustment, easy-start system, durable steel deck, and large rear wheels for enhanced maneuverability. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Assembly Instructions 3. Safety Information 4. Specifications 5. Controls and Operation 6. Cutting Height Adjustment 7. 3-in-1 Function Setup 8. Maintenance Schedule 9. Storage Guidelines 10. Warranty Information 11. Troubleshooting

Features at a Glance

Key components: 190cc Briggs & Stratton engine, 22-inch steel cutting deck, rear grass bag, mulch plug, side discharge chute, single-lever height adjuster, and recoil starter.

FeatureDescription
Engine190cc Briggs & Stratton 4-cycle gasoline engine
Cutting Width22 inches
Cutting DeckDurable steel construction
Cutting Options3-in-1 (Mulch, Bag, Side Discharge)
Height AdjustmentSingle-lever, 6 positions (1.25" - 3.75")
Starting SystemRecoil easy-start
WheelsLarge 8-inch rear wheels for easy rolling
Fuel Tank0.95 quart capacity
Oil TypeSAE 30 (summer) / 5W-30 (winter)
WeightApproximately 65 lbs

Assembly Instructions

Unpack all parts and inspect for damage. Assembly requires basic tools (included).

  1. Attach handle: Align lower handle with deck brackets, secure with bolts and wing nuts.
  2. Install upper handle: Connect to lower handle, secure with provided hardware.
  3. Attach grass bag: Hook bag frame onto rear deck brackets; ensure secure fit.
  4. Install side discharge chute: If using, attach to deck opening with retaining pin.
  5. Add engine oil: Fill with SAE 30 oil to full mark on dipstick (approx. 20 oz).
  6. Add gasoline: Use fresh unleaded gasoline (87 octane minimum).

WARNING! Always wear gloves during assembly. Ensure all bolts are tightened securely before operation.

Safety Information

Read all instructions before operating. Always follow basic lawn mower safety rules.

  1. Clear mowing area of stones, toys, and other objects that could be thrown.
  2. Always wear sturdy footwear and eye protection.
  3. Do not operate on slopes greater than 15 degrees.
  4. Never remove grass bag or unclog chute with engine running.
  5. Keep children and pets away from mowing area.
  6. Stop engine and wait for blades to stop completely before crossing gravel drives or roads.

DANGER! Rotating blade can cause severe injury. Keep hands and feet away from deck opening at all times.

Specifications

Controls and Operation

Main controls: Engine throttle control, recoil starter grip, blade control bail, and height adjustment lever.

Starting Procedure:

  1. Check oil and fuel levels.
  2. Move throttle control to FAST position.
  3. Prime engine (if equipped) by pressing primer bulb 3 times.
  4. Pull recoil starter grip firmly until engine starts.
  5. To engage blade, press blade control bail against handle.

Stopping: Release blade control bail to stop blade. Move throttle to STOP position to stop engine.

Cutting Height Adjustment

Single-lever adjustment changes height for all four wheels simultaneously.

  1. Stop engine and wait for blade to stop completely.
  2. Pull height adjustment lever outward and move to desired position (1-6).
  3. Release lever to lock into position.
  4. Position 1 = lowest cut (1.25"), Position 6 = highest cut (3.75").

Tip: For first mow of season or very tall grass, use highest setting, then lower for subsequent mows.

3-in-1 Function Setup

Configure for mulching, bagging, or side discharge.

  1. Mulching: Install mulch plug in rear discharge opening. Grass is cut finely and returned to lawn.
  2. Bagging: Remove mulch plug, attach grass bag to rear brackets.
  3. Side Discharge: Remove mulch plug and bag, install side discharge chute.

WARNING! Always stop engine before changing cutting functions. Ensure chute or bag is properly secured.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Maintenance TaskFrequency
Check engine oil levelBefore each use
Clean underside of deckAfter each use
Check blade sharpness/balanceEvery 25 hours
Replace air filterEvery season or 25 hours
Change engine oilFirst 5 hours, then every 50 hours
Replace spark plugEvery 100 hours or annually
Lubricate wheel bearingsEvery 50 hours

Storage Guidelines

Proper storage prevents fuel system issues and corrosion.

  1. Run engine to use up remaining fuel, or add fuel stabilizer to full tank.
  2. Change engine oil at end of season.
  3. Clean deck thoroughly and dry to prevent rust.
  4. Remove spark plug, add 1 tablespoon of oil to cylinder, pull starter slowly to distribute.
  5. Store in clean, dry place, preferably covered.

CAUTION! Never store mower with fuel in tank indoors or in enclosed spaces without proper ventilation.

Warranty Information

Murray MD2250 comes with a 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, misuse, or lack of maintenance. Proof of purchase required. For warranty service, contact authorized Murray service center. Keep this manual and receipt for reference.

Troubleshooting

SymptomPossible CauseCorrective Action
Engine won't startNo fuel, stale fuel, clogged air filterAdd fresh gasoline; clean/replace air filter; check spark plug.
Engine runs poorlyDirty air filter, old gasolineClean air filter; drain and replace with fresh fuel.
Uneven cuttingDull blade, uneven tire pressureSharpen or replace blade; check tire pressure.
Excessive vibrationLoose blade, bent blade, debrisTighten blade bolt; replace bent blade; clean deck.
Grass not dischargingWet grass, clogged deckWait for grass to dry; stop engine and clean deck.
Loss of powerDirty air filter, low oil levelClean air filter; check and add oil if low.

Service: For technical support, call 1-800-XXX-XXXX or visit www.murray.com

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