Figure 11

4.Remove blade and adapter from the crankshaft.

5.The blade may be resharpened by removing it and either grinding or filing the cutting edge keeping as close to the original bevel as possible. Do not attempt to sharpen the blade while it is still on the mower.

6.It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade.

NOTE: Improper blade balance will result in excessive vibration causing eventual damage to the engine and mower. Be sure to carefully balance blade after sharpen- ing. Possible damage resulting from blade unbalance condition is not the responsibility of the manufacturer.

NOTE: Always remove blade from the adapter for testing balance.

7.The blade can be tested for balance by balancing it on a round shaft screwdriver. Remove metal from the heavy side until it balances evenly.

8.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.

9.Install the blade adapter on the crankshaft with the “star” away from the engine. See Figure 11. Place the blade with the side marked “bottom” (or with part number) facing away from the adapter. Align the blade bell support over the blade with the tabs in the holes of the blade and insert the hex bolt.

10.Tighten the hex bolt to the torque listed below:

Blade Mounting Torque

Center Bolt 450 in. lb. min., 600 in.lb. max.

To insure safe operation of your unit, ALL nuts and bolts must be checked periodically for correct tightness.

Rear Flap Replacement

1.The rear flap is attached to the back of the mower deck, and is designed to minimize the possibility that objects will be thrown from the rear of the mower toward the operator. If the rear flap becomes dam- aged, replace as follows.

2.To remove the old rear flap, cut off the flat end of the wire rod which secures it to the deck using a pair of side-cutters. Attach the new rear flap using the new rod provided with the rear flap, bending the ends of the rod over to secure.

Off-Season Storage

The following steps should be taken to prepare your lawn mower for storage.

1.Clean and lubricate mower thoroughly as described in the lubrication instructions.

2.We do not recommend the use of a pressure washer or garden hose to clean your unit.

3.Refer to engine manual for correct engine storage instructions.

4.Coat mower’s cutting blade with chassis grease to prevent rusting.

5.Store mower in a dry, clean area. Do not store next to corrosive materials, such as fertilizer.

NOTE: When storing any type of power equipment in a poorly ventilated or metal storage shed, care should be taken to rust-proof the equipment. Using a light oil or silicone, coat the equipment, especially cables and all moving parts of your lawn mower before storage.

5

Maintenance

WARNING

When removing the cutting blade for sharpening or replacement, protect your hands with a pair of heavy gloves or use a heavy rag to hold the blade.

An unbalanced blade will cause excessive vibration when rotat- ing at high speeds. It may cause damage to mower, and could break causing per- sonal injury.

Cutting grass in sandy soil condition causes abrasive wear to the blade.

11

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MTD Series 400 warranty Rear Flap Replacement, Off-Season Storage, Remove blade and adapter from the crankshaft
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Series 400 specifications

The MTD Series 400 is a cutting-edge line of equipment designed specifically for efficiency and versatility in outdoor maintenance. With design enhancements tailored for both residential and commercial users, the Series 400 stands out in its category thanks to its robust construction, user-friendly controls, and advanced technology.

One of the main features of the MTD Series 400 is its powerful engine. Equipped with an efficient four-stroke engine, it delivers exceptional performance while maintaining low emissions, making it environmentally friendly. This engine also ensures reliable operation across various terrains, from flat lawns to hilly regions, providing users with the confidence to tackle any outdoor task.

Another notable characteristic is the ergonomic design. The Series 400 incorporates adjustable handlebars and cushioned grips that promote comfort for extended use. This design consideration reduces fatigue and enhances user control, making it suitable for both novice and experienced users alike.

The Series 400 incorporates several advanced technologies that set it apart from competitors. For instance, its intuitive control panel simplifies operation, allowing users to easily switch between different settings without confusion. Moreover, the inclusion of a quick-start feature means users can get to work without unnecessary delays, enhancing overall productivity.

Durability is a hallmark of the MTD Series 400, with high-quality materials used throughout its construction. Reinforced components and weather-resistant finishes ensure that the equipment can withstand the rigors of outdoor use, thus extending its lifespan significantly.

One of the standout technologies in the Series 400 is its cutting system, which is optimized for precision and performance. This system allows for adjustable height settings, enabling users to achieve the desired grass length while promoting healthy lawn growth. This adaptability is crucial for meeting diverse gardening needs.

Additionally, the MTD Series 400 is designed with maintenance in mind. Its accessible components make routine checks and servicing straightforward, which is critical for ensuring long-term functionality and reliability.

In summary, the MTD Series 400 combines powerful performance, ergonomic design, advanced technology, and durability to meet the needs of outdoor maintenance. Whether for residential gardens or commercial landscapes, the Series 400 equips users with the tools needed to achieve optimal results efficiently and effectively.
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