Murray PRO 164863 Lawn Mower Manual

The Murray PRO 164863 is a robust, self-propelled walk-behind lawn mower designed for residential use. It features a Briggs & Stratton engine, 21-inch steel cutting deck, 3-in-1 mulching/bagging/side discharge capability, single-lever height adjustment, rear-wheel drive, and a durable steel frame. 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 Discharge System 8. Maintenance Schedule 9. Storage Guidelines 10. Warranty Information 11. Troubleshooting

Features at a Glance

Key components: Briggs & Stratton engine, 21-inch steel deck, rear bagger, mulch plug, side discharge chute, single-lever height adjuster, rear-wheel drive system, and recoil starter.

Feature	Description
Engine	Briggs & Stratton 140cc OHV engine
Cutting Width	21 inches
Cutting Deck	Steel, rust-resistant
Drive System	Rear-wheel self-propelled
Height Adjustment	Single lever, 6 positions (1.5-3.75 inches)
Discharge Options	Mulch, Bag, Side Discharge (3-in-1)
Starter	Recoil pull-start
Fuel Tank	1.1-quart capacity
Wheels	8-inch rear, 7-inch front
Weight	Approximately 65 lbs

Assembly Instructions

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

Attach handle: Secure upper and lower handle sections with provided bolts.
Install wheels: Slide wheels onto axles; secure with retainer clips.
Attach discharge chute: Align chute with deck opening; secure with wing nut.
Install bagger: Hook rear bag onto deck brackets; ensure secure fit.
Add mulch plug (if mulching): Insert plug into rear discharge opening.
Add oil and fuel: Fill engine with SAE 30 oil; add unleaded gasoline (87 octane).

WARNING! Do not add fuel indoors or near ignition sources. Ensure all fasteners are tight.

Safety Precautions

Always operate mower with care to prevent injury.

Read manual thoroughly before use.
Wear sturdy shoes, eye protection, and long pants.
Clear mowing area of stones, toys, and debris.
Never mow wet grass or in poor light.
Keep hands and feet away from moving parts.
Turn off engine before adjusting height or clearing blockages.
Do not allow children to operate mower.

CAUTION! Engine and muffler become hot; allow to cool before storage or maintenance.

Specifications

Model: Murray PRO 164863
Engine: Briggs & Stratton 140cc, 4-cycle OHV
Cutting Width: 21 inches
Cutting Heights: 6 positions, 1.5 to 3.75 inches
Drive: Rear-wheel self-propelled, variable speed
Discharge: Mulch, Bag, Side Discharge
Deck Material: Steel
Wheels: 8-inch rear, 7-inch front
Fuel Capacity: 1.1 quarts
Oil Capacity: 20 oz (SAE 30)
Weight: 65 lbs (approx.)

Controls and Operation

Handle Controls: Drive control lever, recoil starter grip, height adjust lever, bagger handle.

Starting: 1. Check oil and fuel. 2. Push primer bulb 3 times (cold engine). 3. Set throttle to FAST. 4. Pull recoil starter firmly. Stopping: Release drive lever; move throttle to STOP. Self-Propelled Operation: Squeeze drive lever to engage wheels; release to stop drive. Speed adjusts with throttle.

Cutting Height Adjustment

Single-lever adjustment for all four wheels.

Stop engine and wait for blade to stop.
Pull height adjust lever outward.
Move lever to desired position (1-6).
Release lever to lock in place.

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

3-in-1 Discharge System

Configure for mulching, bagging, or side discharge.

Mulching: Install mulch plug; close side discharge opening.
Bagging: Attach rear bag; ensure chute is open to bag.
Side Discharge: Remove mulch plug and bag; attach discharge chute.

WARNING! Always stop engine before changing discharge mode. Ensure all attachments are secure.

Maintenance Schedule

Regular maintenance ensures longevity and performance.

Interval	Task
Before each use	Check oil level; inspect blade for damage; clear deck of debris
Every 25 hours	Change engine oil (SAE 30)
Every season	Replace air filter; sharpen or replace blade; check spark plug
As needed	Clean underside of deck; lubricate wheel axles; check tire pressure

CAUTION! Disconnect spark plug wire before performing any maintenance.

Storage Guidelines

Prepare mower for off-season storage.

Run engine to burn remaining fuel, or add fuel stabilizer.
Change oil and replace air filter.
Clean deck thoroughly; apply light oil to prevent rust.
Remove spark plug; add 1 teaspoon of oil into cylinder; pull starter slowly to coat.
Store in dry, covered area, away from children.

Tip: Inflate tires to recommended pressure before storage to prevent flat spots.

Warranty Information

Murray PRO 164863 comes with a 2-year limited warranty for residential use. Warranty covers defects in materials and workmanship. Not covered: normal wear, misuse, neglect, commercial use, or improper maintenance. For warranty service, contact Murray customer service at 1-800-XXX-XXXX or visit www.murray.com. Keep original receipt as proof of purchase.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, old gas, clogged filter	Check fuel level; use fresh gas; clean/replace air filter.
Engine runs poorly	Dirty spark plug, stale fuel	Clean or replace spark plug; drain and refill with fresh gas.
Uneven cut	Dull blade, uneven tire pressure	Sharpen or balance blade; inflate all tires equally.
Mower vibrates excessively	Loose blade, debris under deck	Tighten blade bolt; clean deck; check for bent blade.
Self-propel not working	Drive cable loose, worn drive belt	Adjust drive cable tension; inspect and replace belt if worn.
Grass not discharging	Wet grass, clogged deck	Mow when grass is dry; stop engine and clear clogs.

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