Murray EC370 Lawn Mower Manual

The Murray EC370 is a 3.7 horsepower, 21-inch push lawn mower featuring a Briggs & Stratton engine, 3-in-1 mulching/bagging/side discharge capability, single-lever height adjustment, durable steel deck, and easy-start system. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Assembly Instructions 3. Safety Precautions 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: Briggs & Stratton engine, 21-inch steel cutting deck, rear grass bag, mulching plug, side discharge chute, single-lever height adjuster, and recoil starter.

FeatureDescription
Engine3.7 HP Briggs & Stratton 125cc 4-cycle engine
Cutting Width21-inch steel deck
Cutting Options3-in-1: Mulch, Bag, Side Discharge
Height AdjustmentSingle-lever, 6 positions (1.5" - 3.75")
Start SystemRecoil pull-start
Wheels8-inch rear, 7-inch front
Bag Capacity1.9 bushels (55 liters)
Fuel Tank0.5 gallon (1.9 liters)
HandleFoldable, adjustable
WeightApproximately 55 lbs (25 kg)

Assembly Instructions

Unpack and inspect all parts. 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 wheels: Insert axle through wheel hubs, secure with washers and retaining clips.
  4. Install grass bag: Hang bag frame on rear deck hooks, attach bag to frame.
  5. Add mulching plug: Insert plug into rear discharge opening when mulching.
  6. Check oil: Engine is shipped without oil; add SAE 30 motor oil to full mark on dipstick.

WARNING! Do not add gasoline until assembly is complete and you are ready to mow.

Safety Precautions

Read all instructions before operating. Always wear appropriate safety gear.

  1. Clear mowing area of stones, toys, and debris before starting.
  2. Never mow wet grass or in rainy conditions.
  3. Keep hands and feet away from rotating blades and discharge openings.
  4. Stop engine and disconnect spark plug wire before performing any maintenance.
  5. Do not allow children or pets in mowing area.
  6. Use extreme caution when mowing on slopes; mow across slopes, not up and down.

CAUTION! Gasoline is flammable; store in approved container away from heat sources.

Specifications

Controls and Operation

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

Starting Procedure:

  1. Check oil level and add gasoline (87 octane or higher).
  2. Move throttle control to FAST position.
  3. Prime engine by pressing primer bulb 3 times (cold starts).
  4. Pull recoil starter handle firmly until engine starts.

Operating: Squeeze blade control bail against handle to engage blade and self-propel (if equipped). Release to stop blade. Use throttle to adjust engine speed.

Cutting Height Adjustment

Single-lever adjustment for all four wheels.

  1. Stop engine and wait for blades to stop completely.
  2. Pull height adjustment lever outward and move to desired position (1-6).
  3. Release lever to lock in position.
  4. Test mower on a small area to ensure proper cutting height.

Tip: For first mow of season, set to highest position; gradually lower for subsequent mows.

3-in-1 Function Setup

Configure for mulching, bagging, or side discharge.

  1. Mulching: Install mulching plug in rear discharge opening. Blade must be mulching type.
  2. Bagging: Remove mulching plug, attach grass bag to rear deck hooks.
  3. Side Discharge: Remove both mulching plug and grass bag, attach side discharge chute (if included).

WARNING! Always stop engine before changing cutting functions. Ensure all attachments are securely installed.

Maintenance Schedule

Maintenance TaskFrequency
Check engine oil levelBefore each use
Clean under deckAfter each use
Check air filterEvery 25 hours
Replace spark plugEvery 100 hours
Sharpen/replace bladeEvery 25 hours or as needed
Change engine oilFirst 5 hours, then every 50 hours
Lubricate wheelsEvery season
Check tire pressureMonthly

Storage Guidelines

Proper storage extends mower life and ensures easy starting next season.

  1. Drain or add fuel stabilizer to gasoline tank before long-term storage.
  2. Run engine for 5 minutes to circulate stabilized fuel through carburetor.
  3. Change engine oil at end of season.
  4. Clean mower thoroughly, especially under deck.
  5. Remove spark plug, add 1 tablespoon of oil to cylinder, pull starter cord slowly to distribute.
  6. Store in clean, dry place, protected from weather.

CAUTION! Never store mower with gasoline in tank indoors or near open flames.

Warranty Information

Murray EC370 comes with a 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, misuse, or lack of maintenance. For warranty service, contact Murray customer service at 1-800-800-7310 or visit www.murray.com. Keep original receipt as proof of purchase.

Troubleshooting

SymptomPossible CauseCorrective Action
Engine won't startNo fuel, old gasoline, clogged air filterAdd fresh gasoline; clean/replace air filter; check spark plug.
Engine runs poorlyDirty air filter, old gasolineReplace air filter; drain and add fresh gasoline.
Uneven cuttingDull blade, uneven tire pressureSharpen or replace blade; check tire pressure.
VibrationLoose blade, bent blade, debrisTighten blade bolt; replace bent blade; clean under deck.
Grass not dischargingWet grass, clogged deckWait for grass to dry; clean under deck; adjust cutting height.
Self-propel not workingDrive cable loose, worn drive beltAdjust drive cable; replace drive belt if equipped.

Service: For technical support, call 1-800-800-7310 or visit www.murray.com

Murray EC370 Lawn Mower Manual © - All Rights Reserved 2025