3 - ASSEMBLY INSTRUCTIONS

CAUTION

A new saw chain stretches, requiring adjustment after as few as 5 cuts. This is normal with a new chain, and the interval between future adjustments will lengthen quickly.

CAUTION

If saw chain is TOO LOOSE or TOO TIGHT, the sprocket, bar, chain, and crankshaft bearings will wear more rapidly. Study Figure 3-4B for information concerning correct cold tension (A), correct warm tension (B), and as a guide for when saw chain needs adjustment (C).

To Test CHAIN BRAKE®:

1.The CHAIN BRAKE® is DISENGAGED (chain can move) when BRAKE LEVER IS PULLED BACK AND LOCKED. Be sure the chain break latch is in the OFF position. (Figure 3-5A).

2.The CHAIN BRAKE® is ENGAGED (chain is stopped) when brake lever is in forward position and the chain break latch is in the ON position. You should not be able to move chain (Figure 3-5B).

NOTE: The brake lever should snap into both positions. If strong resistance is felt, or lever does not move into either position, do not use your saw. Take it immediately to an Authorized Service Center for repair.

A B C

3-4B

3-5. CHAIN BRAKE® MECHANICAL TEST

Your chain saw is equipped with a CHAIN BRAKE® that reduces possibility of injury due to kickback. The brake is activated if pressure is applied against brake lever when, as in the event of kickback, operator’s hand strikes the lever. When the brake is actuated, chain movement stops abruptly.

WARNING

The purpose of the CHAIN BRAKE® is to reduce the possi- bility of injury due to kickback; however, it cannot provide the intended measure of protection if the saw is operated carelessly.

Always test the CHAIN BRAKE® before using your saw and periodically while on the job.

OFF

3-5A

ON

3-5B

8

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Yard Machines MTD1640NAVCC, MTD1840AVCC manual Chain Brake Mechanical Test, To Test Chain Brake
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MTD1640NAVCC, MTD1840AVCC specifications

The Yard Machines MTD1840AVCC and MTD1640NAVCC are powerful lawn mowers designed for efficient grass cutting and yard maintenance, perfect for homeowners seeking reliability and performance. These models stand out for their robust construction, user-friendly features, and advanced technologies that ensure a seamless mowing experience.

The MTD1840AVCC model is equipped with an 18-inch cutting deck, making it ideal for small to medium-sized lawns. It features a reliable 40V lithium-ion battery, which not only provides impressive runtime but also operates quietly, reducing noise pollution during use. The mower offers three cutting options: mulching, side discharge, and rear bagging, allowing users to choose the best method for their yard care. The adjustable cutting height accommodates different grass lengths, making it versatile for various gardening needs.

In contrast, the MTD1640NAVCC model comes with a slightly smaller 16-inch cutting deck, making it an excellent choice for tighter spaces and small yards. It shares many of the same benefits as the MTD1840AVCC, with a 40V lithium-ion battery for efficient performance. The MTD1640NAVCC also offers multiple cutting modes, providing flexibility in achieving the desired finish for your lawn.

Both models are built with lightweight materials, ensuring easy maneuverability even on uneven terrain. The ergonomic handle design adds comfort during use, reducing strain on the arms and back. Additionally, the foldable handle feature allows for compact storage, making them ideal for garages and sheds with limited space.

Safety features have not been overlooked, with both mowers equipped with a blade brake mechanism that stops the blade quickly when the user releases the handle. This ensures added safety, especially in households with children or pets.

In conclusion, the Yard Machines MTD1840AVCC and MTD1640NAVCC are exemplary lawn mowers that combine innovative technology with practical features. Their durable construction, efficient battery operation, and versatile cutting options make them superb choices for maintaining a beautiful lawn. Whether you have a small urban yard or a larger suburban garden, these mowers deliver performance and reliability you can trust.
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