Murray 425015x92A Inspect Blade, HOW to Remove and Install the Blade, HOW to Sharpen the Blade

Page 21

MAINTENANCE

INSPECT BLADE

WARNING: Before you inspect or remove the blade, disconnect the wire to the spark plug. If the blade hits an object, stop the engine. Check the unit for dam- age. The blade has sharp edges. When you hold the blade, use gloves or cloth material to protect your hands.

If you keep the blade sharp and inspect the blade for damage, the blade will cut better and be more safe to operate. Frequently check the blade for excessive wear, cracks, or other damage. Frequently check the nut that holds the blade. Keep the nut tight. If the blade hits an object, stop the engine. Disconnect the wire to the spark plug. See if the blade is bent or damaged. Check the blade adapter for damage. Before you operate the unit, replace damaged parts with original equipment parts. See the authorized service center in your area. Every three years, have an authorized service person inspect the blade or replace the old blade with an original equipment part.

HOW TO REMOVE AND INSTALL THE BLADE

1.Remove the mower housing. See the instructions on “How To Remove The Mower Housing”.

2.Use a piece of wood to keep the blade from rotating.

3.Remove the nut that holds the blade (Figure 10).

Hi–Lift

Edge Up

Mandrel

Blade Adapter

Blade

Belleville Washer

 

Washer

Nut

Figure 10

 

4.

Check the blade and the blade adapter according to the in-

 

structions for “Inspect Blade”. Replace a badly worn or dam-

 

aged blade with an original equipment blade. See an

 

authorized service center in your area.

5.

Clean the top and bottom of the mower housing. Remove all the

9.Tighten the nut that holds the blade to a torque of 35 foot pounds (47,5 N–m).

10.Install the mower housing. See “How To Install The Mower Housing”.

Blade Adapter

 

 

Blade

 

Washer

Belleville Washer

Nut

 

(Outside rim must be

Figure 11

against the blade.)

HOW TO SHARPEN THE BLADE

WARNING: Vibration can be caused if the blade is not correctly balanced or if the blade is damaged. A blade that is damaged with cracks can break and cause an accident.

Keep a sharp edge on the blade. A blade that is not sharp will cause the tips of the grass to become brown.

1.Sharpen the blade two times a year or every 25 hours.

2.Remove the blade according to the instructions in “How To Re- move And Install The Blade”.

3.Clean the blade with a brush, soap and water. Check the blade. Look for cracks, nicks, or other damage. Replace a badly worn or damaged blade with an original equipment blade. See an authorized service center in your area.

4.Sharpen the blade with a file (Figure 12). Make sure you keep the original bevel angle.

5.Make sure the blade is balanced. Use a screwdriver and hold the blade parallel to the ground (Figure 12). A blade that is balanced will stay parallel to the ground. If the blade is not bal- anced, the heavy end will rotate toward the ground. Sharpen the heavy end until the blade is balanced.

6.A new blade will cut better than a badly worn blade. Every three years, have an authorized service person inspect the blade or replace the old blade with an original equipment blade.

7.Assemble the blade according to the instructions “How To Re- move And Install The Blade”.

 

grass and debris.

6.

Mount the blade and blade adapter on the mandrel

 

(Figure 10).

7.

Mount the blade so that the hi–lift edges are up. If the blade

 

is upside down, the blade will not cut correctly and can cause

 

an accident.

8.

Fasten the blade with the original washers and nut. Make sure

 

the outside rim of the Belleville washer is against the blade

 

(Figure 11).

WARNING: Always keep the nut tight that holds the blade. A loose nut or blade can cause an accident.

F–040734L

21

Screwdriver

Blade is balanced

when parallel to the ground.

Ground

Blade

File

Figure 12

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Contents Model Table of Contents Environmental Awareness OWNER’S InformationII. Slope operation Safe Mowing Guide Safe Mowing Guide Safe Mowing Guide Before Mowing Steps to FollowInternational Pictorials Safety Warning PictorialsInternational Pictorials Control And Operating PictorialsAssembly AssemblyHOW to Install the Seat HOW to Assemble the Steering WheelHOW to Assemble the Gauge Wheels Maintenance Free Battery HOW to Charge Maintenance Free BatteryHOW to Install the Battery Cables Check the Level of the Mower Housing HOW to Prepare the EngineIMPORTANT! Before YOU Start Mowing Check the TiresOperation Location of ControlsLift Lever HOW to USE the Shift Lever HOW to USE THROTTLE/CHOKE ControlAttachments See the Instruction Book for the AttachmentHOW to Change the Cutting Height HOW to SET the Parking BrakeHOW to Stop the Unit HOW to Transport the UnitHOW to Operate the Unit on Hills HOW to Operate with the Mower HousingHOW to Start the Engine Before Starting the EngineCarburetor Mowing and Bagging Tips Operating TipsFrequency Maintenance Required Comments MaintenanceHOW to Check the Muffler General RecommendationsHOW to Remove and Install the Blade HOW to Sharpen the BladeInspect Blade HOW to Adjust the Blade Rotation Control HOW to Check and Adjust the Drive Brake HOW to Check and Adjust the ClutchDisconnect the adjuster nut from the shifter bracket Figure HOW to Adjust the Shift LeverHOW to Check the Fuel Filter Where to LubricateHOW to Install the Mower Housing HOW to Remove the Mower HousingHOW to Adjust the Gauge Wheels HOW to Level the Mower Housing Removal HOW to Replace Motion Drive BeltInstallation HOW to Replace the Mower Drive Belt Front Wheel HOW to Install the WheelsHOW to Replace the Light Bulb HOW to Replace the FuseHOW to Clean the Mower Housing BatteryTrouble Shooting Chart USA 040734LChassis & Hood Repair PartsKey Description Motion Drive Motion Drive Steering Key Part Description Repair Parts Mower Housing Suspension Mower Housing Suspension Mower Housing Complete Mower Housing Assy Repair Parts Engine Mount Engine Mount Light Harness Electrical SystemElectrical System 040734L Index Model No Bushel Capacity Model No

425015x92A specifications

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