7 - MAINTENANCE INSTRUCTIONS

7-5.SPARK PLUG

NOTE: For efficient operation of saw engine, spark plug must be kept clean and properly gapped.

1.Push STOP switch down.

2.Remove air cleaner cover.

3.Disconnect the wire connector (G) from the spark plug

(H) by pulling and twisting at the same time (Figure 7- 5A).

4.Remove spark plug with spark plug socket wrench.

DO NOT USE ANY OTHER TOOL.

5.Check electrode gaps with wire feeler gauge and set gaps to .025” (.635mm) if necessary.

6.Reinstall a new spark plug.

NOTE: A resistor spark plug must be used for replacement (MTD part no. 9295-310502, Champion RZ7C).

NOTE: This spark ignition system meets all requirements of the Canadian Interference-Causing Equipment Regulations.

G

H

7-5A

7-6.CARBURETOR ADJUSTMENT

The carburetor was pre-set at the factory for optimum per- formance. If further adjustments are necessary, please take your unit to the nearest Authorized Service Center listed in the Yellow Pages.

7-7.STORING A CHAIN SAW

CAUTION

Never store a chain saw for longer than 30 days without performing the following procedures.

Storing a chain saw for longer than 30 days requires stor- age maintenance. Unless the storage instructions are fol- lowed, fuel remaining in the carburetor will evaporate, leav- ing gum-like deposits. This could lead to difficult starting and result in costly repairs.

1.Remove the fuel tank cap slowly to release any pres- sure in tank. Carefully drain the fuel tank.

2.Start the engine and let it run until the unit stops to remove fuel from carburetor.

3.Allow the engine to cool (approx. 5 minutes).

4.Using a spark plug wrench, remove the spark plug.

5.Pour 1 teaspoon of clean 2-cycle oil into the combus- tion chamber. Pull starter rope slowly several times to coat internal components. Replace spark plug (Figure 7-7A).

NOTE: Store the unit in a dry place and away from possi- ble sources of ignition such as a furnace, gas hot water heater, gas dryer, etc.

7-7A

7-8.REMOVING A UNIT FROM STORAGE

1.Remove spark plug.

2.Pull starter rope briskly to clear excess oil from com- bustion chamber.

3.Clean and gap spark plug or install a new spark plug with proper gap.

4.Prepare unit for operation.

5.Fill fuel tank with proper fuel / oil mixture. See Fuel and Lubrication Section.

16

Page 16 Page 18
Page 17
Image 17
Yard Machines MTD1640NAVCC manual Spark Plug, Carburetor Adjustment, Storing a Chain SAW, Removing a Unit from Storage
Page 16 Page 18

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.
Top Page Image Contents