Murray 7800202 Lawn Mower Manual

The Murray 7800202 is a 20-inch push lawn mower featuring a Briggs & Stratton engine, 3-in-1 mulching/bagging/side discharge capability, adjustable cutting height, easy-start system, durable steel deck, and ergonomic handle with soft-grip. This manual covers safety, assembly, operation, maintenance, troubleshooting, and specifications for optimal performance and longevity.

1. Features at a Glance 2. Assembly Instructions 3. First-Time Setup 4. Specifications 5. Controls and Operation 6. Cutting & Height Adjustment 7. Maintenance Schedule 8. Storage Guidelines 10. Safety Information 11. Warranty & Support 12. Troubleshooting

Features at a Glance

Key components: Briggs & Stratton engine, 20-inch steel cutting deck, 3-in-1 system, adjustable handle, rear bagger, and mulching plug.

Feature	Description
Engine	Briggs & Stratton 125cc, 4-cycle
Cutting Width	20 inches
Cutting Options	Mulch, Bag, Side Discharge
Cutting Height	6 positions (1.5" to 3.5")
Deck Material	Durable steel
Start System	Easy-Pull recoil
Wheels	8-inch rear, 7-inch front
Handle	Adjustable, foldable with soft grips
Bag Capacity	1.8 bushels
Weight	Approx. 55 lbs

Assembly Instructions

Unpack all parts and inspect for damage. Assemble on a flat, clear surface.

Attach Handle: Bolt upper handle to lower brackets using provided hardware.
Install Wheels: Slide axles through deck brackets, secure with washers and clips.
Attach Bag: Hook bag frame onto rear deck brackets; ensure secure fit.
Install Mulching Plug: Insert plug into rear discharge chute if mulching.
Add Oil & Gas: Fill engine with SAE 30 oil (check dipstick); add unleaded gasoline.

WARNING! Wear gloves during assembly. Ensure all bolts are tightened securely.

First-Time Setup

Before first use, complete final checks and adjustments.

Check Oil Level: Ensure oil is at full mark on dipstick.
Add Fuel: Use fresh unleaded gasoline; do not overfill.
Adjust Handle Height: Set to comfortable position and tighten knobs.
Set Cutting Height: Adjust lever to desired setting (middle position recommended).
Test Start: Pull recoil starter slowly until resistance, then briskly to start.

CAUTION! Operate outdoors only. Keep area clear of bystanders.

Specifications

Model: Murray 7800202
Engine: Briggs & Stratton 125cc, 4-cycle
Cutting Width: 20 inches
Cutting Height Range: 1.5" to 3.5" (6 positions)
Deck: 20-gauge steel
Wheels: 8" rear, 7" front
Bag Capacity: 1.8 bushels
Fuel Tank: 0.5 gallons
Oil Capacity: 20 oz (SAE 30)
Weight: 55 lbs (approx.)

Controls and Operation

Primary controls: Recoil starter, throttle control, drive control bar, height adjustment lever.

Starting Procedure:

Move throttle to FAST position.
Prime engine (if equipped) by pressing bulb 3 times.
Pull recoil starter briskly.
To engage self-propel (if equipped), squeeze drive control bar to handle.

Stopping: Release drive bar; move throttle to STOP. Wait for blade to stop completely.

Cutting & Height Adjustment

Adjust cutting height based on grass condition and season.

Stop engine and wait for blade to stop.
Pull height adjustment lever outward and move to desired position.
For mulching: Install mulching plug; ensure bag is removed.
For bagging: Attach bag; remove mulching plug.
For side discharge: Remove plug and bag; attach side discharge chute.

Tip: Cut when grass is dry. Never remove more than 1/3 of grass height at once.

Maintenance Schedule

Regular maintenance ensures optimal performance and extends mower life.

Interval	Task
Before each use	Check oil level; inspect blade for damage; clear debris
Every 25 hours	Change oil; check air filter; inspect spark plug
Every season	Sharpen or replace blade; clean underside of deck
Storage	Drain fuel or add stabilizer; clean thoroughly

WARNING! Disconnect spark plug before performing any maintenance.

Storage Guidelines

Proper storage prevents corrosion and starting issues.

Clean mower thoroughly, especially underside.
Drain fuel or add fuel stabilizer and run engine for 5 minutes.
Change oil if near due.
Store in dry, covered area.
Remove battery (if electric start) and store separately.

CAUTION! Never store with fuel in tank indoors without stabilizer.

Safety Information

Always follow safety guidelines to prevent injury.

Wear sturdy shoes, eye protection, and long pants.
Clear mowing area of sticks, stones, and debris.
Never mow wet grass.
Keep hands and feet away from moving parts.
Do not allow children to operate mower.
Always push mower forward; never pull backward.
Stop engine and disconnect spark plug before unclogging or maintenance.

Warranty & Support

Murray mowers come with a limited warranty. Register your product online for full coverage.

Warranty: 2-year limited warranty for residential use.

Support: For parts, manuals, or assistance, visit www.murray.com or call 1-800-800-7310.

Parts: Use model number 7800202 when ordering replacement parts.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, old gas, clogged air filter	Add fresh fuel; clean/replace air filter; check spark plug.
Poor cutting performance	Dull blade, low engine speed	Sharpen/replace blade; set throttle to FAST.
Uneven cut	Uneven tire pressure, bent blade	Check tire pressure; inspect and replace blade if bent.
Excessive vibration	Loose blade, debris in deck	Tighten blade bolt; clean deck interior.
Self-propel not working	Drive belt worn or loose	Inspect and adjust/replace drive belt.
Bag not filling	Clogged chute, wet grass	Stop engine, clear chute; mow when grass is dry.

Reset: For engine issues, refer to engine manual for reset procedures.

Service: 1-800-800-7310; www.murray.com