Yard Machines 21" Rear Discharge Push Mower, 410, through 429 manual Maintaining Your Lawn Mower

Page 14

SECTION 7: MAINTAINING YOUR LAWN MOWER

WARNING: Be sure to disconnect and ground the spark plug wire before performing any repairs or maintenance.

Lubrication

Maintaining the Blade

•Periodically inspect the blade adapter for cracks, especially if you strike a foreign object. Replace when necessary.

Blade Control

Lubricate the pivot points on the blade control handle

 

and the brake cable at least once a season with light oil.

 

See Figure 17. The blade control must operate freely in

•

both directions.

 

Rear Discharge Door

The torsion springs and pivot points should be

lubricated periodically with light oil to prevent any rust • or binding. Door must work freely.

Wheels:

The wheels require no lubrication. However, if the wheels are removed for any reason, lubricate the surface of the axle bolt and the inner surface of the wheel with light oil. Engine oil may also be used.

Engine

•

 

Follow engine manual for lubrication instructions.

•

LUBE

LUBE

WARNING: When removing the cutting blade for sharpening or replacement, protect hands by using heavy gloves or a rag to grasp the cutting blade.

Remove the bolt and bell support which hold the blade and adapter to the engine crankshaft. See Figure 18. Remove the blade and adapter from the crankshaft.

When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receive an equal amount of grinding to prevent an unbalanced blade. An unbalanced blade will cause excessive vibration when rotating at high speeds, and may cause damage to the mower and/or personal injury.

The blade can be tested by balancing it on a round shaft screwdriver. Remove metal from the heavy side until it balances evenly. It is recommended that the blade always be removed from the adapter for the best test of balance.

Before reassembling the blade and the blade adapter to the unit, lubricate the engine crankshaft and the inner surface of the blade adapter with light oil (or engine oil). Lubricating the bolt holes, bolts and inner surface of the nuts is also recommended.

Crankshaft

LUBE

 

Blade

 

Adapter

 

 

 

 

Blade

 

LUBE

Bell

 

Support

 

 

 

 

Hex Bolt

 

 

Figure 18

L

 

• Install the blade adapter on the crankshaft with the

 

 

U

 

 

B

 

“star” away from the engine. Place the blade with

E

 

 

 

the side marked bottom (or with part number) facing

 

 

away from the adapter. Align the blade bell support

Figure 17

 

over the blade with the tabs in the holes of the

 

blade and insert the hex bolt. Tighten the hex bolt to

 

 

the torque listed here.

14

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Contents Operator’s Manual Table of Contents Important Safe Operation Practices General OperationChildren ServiceSlope Operation Do NotPage Slope Gauge CUT Along Dotted LineUnpacking Disconnect Spark Plug WireAssembling Your Lawn Mower Tools RequiredHardtop Grass Bag Assembling Grass CatcherSoft Grass Bag To remove the grass catcher Lift the rear Assembling Chute DeflectorTo attach the grass catcher Lift the rear Know Your Lawn Mower Blade Control HandleGas And Oil Fill-Up Using Rotary MowerOperating Your Lawn Mower Before StartingCarburetor Using MulcherHandle Height Quantum Models Throttle ControlBriggs & Stratton Engines Tecumseh EnginesMaintaining Your Lawn Mower Lubrication Maintaining the BladeReplacing Rear Flap Maintaining the DeckEngine Blade Mounting TorqueTrouble Shooting Guide Trouble Possible Causes Corrective ActionsShroud Chart Shroud ColorParts List for Model Series 410 Through Type of Wheel Tread Color Wheel ChartDescription MANUFACTURER’S Limited Warranty for
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21" Rear Discharge Push Mower, through 429, 410 specifications

The Yard Machines 410 through 429, 21" Rear Discharge Push Mower is a robust and versatile lawn care solution designed for homeowners who prioritize efficiency and convenience. This highly regarded mower stands out in the market thanks to its state-of-the-art features and technology that enhance mowing performance.

One of the main features of the Yard Machines push mower is its 21-inch cutting deck, specifically designed for optimal maneuverability and efficiency in both small and medium-sized yards. The rear discharge functionality allows for a clean and controlled cut, ensuring grass clippings are evenly distributed behind the mower, which helps to improve the lawn's overall health by returning nutrients to the soil.

Equipped with a powerful 140cc engine, the Yard Machines mower provides reliable performance for tackling various grass types and yard conditions. The engine's design prioritizes fuel efficiency, allowing homeowners to mow larger areas without frequently stopping for refueling. The easy-start mechanism enhances user experience, ensuring that the mower starts quickly with minimal hassle.

Another key characteristic is the adjustable cutting height feature, which offers six different settings, ranging from 1.25 inches to 3.75 inches. This versatility allows users to customize their mowing experience based on the specific needs of their lawn and prevailing weather conditions. Whether you need a close cut for a formal look or a higher cut for more foliage, this mower can accommodate your preferences.

The Yard Machines 410 through 429 models also excel in user comfort and ease of use. The lightweight design ensures that even less experienced operators can maneuver the mower effortlessly. Additionally, the ergonomic handlebar provides a comfortable grip and helps to reduce fatigue during extended mowing sessions.

Durability is another standout aspect of this mower, as it features a sturdy steel deck that can withstand the rigors of regular use, ensuring longevity and reliability. Furthermore, the mower's compact size allows for easy storage, even in tight spaces.

Overall, the Yard Machines 410 through 429, 21" Rear Discharge Push Mower is an excellent choice for homeowners seeking a reliable, efficient, and user-friendly option for maintaining their lawns. With its combination of powerful performance, adjustable features, and durability, this mower is designed to make lawn care an effortless and enjoyable task.
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