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 11).

Hi–Lift

Edge Up

Mandrel

Blade Adapter

Blade

Belleville Washer

 

Washer

Nut

Figure 11

 

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 12

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 13). 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 13). 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 11).

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 12).

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

F–030738L

22

Screwdriver

Blade is balanced

when parallel to the ground.

Ground

Blade

File

Figure 13

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Murray 425603x99A manual Inspect Blade, HOW to Remove and Install the Blade, HOW to Sharpen the Blade
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425603x99A specifications

Murray 425603x99A is a significant advancement in the field of outdoor power equipment, combining innovative technologies with user-centric features to deliver an exceptional performance. This model is primarily designed for tackling heavy-duty landscaping tasks with efficiency and ease, making it a top choice among both professional landscapers and avid gardeners.

One of the standout features of the Murray 425603x99A is its powerful engine. Equipped with a robust four-stroke engine, this model offers high torque and reliable power, ensuring that it can handle challenging terrains and thick underbrush without faltering. The engine is not only powerful but also designed with fuel efficiency in mind, allowing users to complete more tasks on less fuel, which is both cost-effective and environmentally friendly.

The design of the Murray 425603x99A emphasizes user comfort and control. Its ergonomic handlebar system provides a comfortable grip and reduces vibrations, minimizing fatigue during extended periods of use. The adjustable height feature allows operators to customize the machine to suit their specific working conditions and personal preferences, enhancing overall user experience.

In terms of cutting technology, the Murray 425603x99A comes with a precision cutting deck that ensures clean and even cuts across various grass types. The deck’s design promotes excellent grass discharge performance, making it easy to manage clippings while maintaining a pristine lawn appearance. Additionally, the mower features multiple cutting height adjustments, providing versatility from a low trim to a more substantial grass length.

Safety is a critical consideration in the design of the Murray 425603x99A. It includes several safety features, such as an automatic shut-off function that engages when the operator releases the handle, preventing accidental starts. The sturdy construction of the mower also adds to its durability, ensuring that it can withstand the rigors of frequent use.

Moreover, the Murray 425603x99A is compatible with a range of accessories, allowing for personalized modifications to its functionality. Users can equip it with baggers, mulchers, and other attachments to enhance its versatility across different tasks.

Overall, the Murray 425603x99A stands out as a well-engineered and dependable outdoor power equipment choice. Its combination of power, precision, and thoughtful design features make it an excellent investment for anyone seeking durability and performance in their landscaping endeavors. Whether for commercial or residential use, this model promises to deliver results that exceed expectations.
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