MTD Series 521 warranty Troubleshooting Guide, Com

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Troubleshooting Guide

8

Problem

Engine fails to start

Engine runs erratic

Engine Overheats

Excessive Vibration

Drivebelt Slips

Possible Cause(s)

Dirty air cleaner

Engine needs to be primed Fuel tank empty

Stale fuel in gasoline tank Spark plug wire disconnected. Spark plug fouled

Engine flooded

Spark plug wire loose Stale fuel in gasoline tank Vent in gas cap plugged Water or dirt in fuel system Dirty air cleaner Carburetor out of adjustment

Engine oil level low Air flow restricted Dirty air filter

Carburetor not adjusted properly

Edger blade bent or damaged Blade spindle bent or damaged

Belt worn or stretched

Corrective Action

Refer to the Engine Manual packed with your unit. Push primer bulb two or three times.

Fill tank with clean, fresh gasoline.

Drain gasoline and refill tank with clean, fresh gasoline. Connect the spark plug wire to the spark plug. Clean, adjust gap or replace spark plug.

Refer to the Engine Manual packed with your unit.

Connect and tighten spark plug wire.

Drain gasoline & refill tank with clean, fresh gasoline. Clear vent of any debris.

Drain fuel tank. Refill with fresh fuel.

Refer to the Engine Manual packed with your unit. Refer to the Engine Manual packed with your unit.

Fill crankcase with proper oil.

Clean the area around the engine’s cooling fins. Replace the engine’s air filter.

Refer to the Engine Manual packed with your unit.

Replace edger blade.

Contact an authorized MTD service dealer.

Replace drive belt.

Troubleshooting

Guide

For parts and/or

accessories please call 1-330-220-4683, or 1-800-800-7310

or visit

www.mtdproducts.

com

NOTE: Specifications are subject to change without notification or obligation.

Images my not reflect your exact model and are for reference purposes only.

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Contents OPERATOR’S Manual Table of Contents Your Responsibility This power machine to persons who read, understandOperation ChildrenBe alert and turn lawn edger off if a child enters the area Use only an approved gasoline containerMaintain or replace safety labels, as necessary ServiceDo not operate machine in rain or wet soil conditions Sight to cutting blade is blocked by guardsSecuring the Handle Assembling Your New EdgerPositioning the Edger Handles Attaching the Starter RopeKnow Your Edger Adding Gasoline And Oil OperationStarting The Engine Stopping The EngineTo adjust the height of curb wheel, proceed as follows Operation AdjustmentEdging Along a Curb Trenching OptionalLubrication MaintainingReplacing the Drive Belt Your EdgerOff-Season Storage Off-Season StorageCom Troubleshooting Guide3119 204 117 750-04428 Part List738-0706C Shoulder Screw 741-0524 MANUFACTURER’S Limited Warranty for