MAINTENANCE AND REPAIR INSTRUCTIONS

SPARK ARRESTOR MAINTENANCE

NOTE: The exhaust can only flow in one direction: AWAY

from the engine. Pay close attention when disassembling the muffler so you can put it back together correctly. Failure to do so will damage the unit and may cause serious personal injury.

1.Remove air filter/muffler cover. Refer to Removing the Air Filter/Muffler Cover.

2.Locate the muffler, but do not remove it. Find the two

(2) screws on the bottom of the muffler (Fig. 28). These two screws hold the Spark Arrestor Hood Assembly and the spark arrestor screen to the bottom of the muffler. Remove the two (2) screws using either a torx #20 or flat blade screwdriver.

3.Using a small flat blade screwdriver, carefully pry up the spark arrestor screen from the recessed hole, taking care to notice that the “raised” part of the spark arrestor screen is inside the recessed hole. Remove the spark arrestor screen from the muffler.

4.Clean the spark arrestor screen with a wire brush. Replace it if it is damaged, or if you are unable to clean it thoroughly.

5.Reinstall the spark arrestor screen by putting the “raised” portion of the screen inside the recessed hole of the muffler. Make sure that the spark arrestor screen fits flat against the muffler.

6.Place the spark arrestor plate on top of the spark arrestor with the “raised” side up and the opening facing towards the engine (Fig. 28).

7.Place the spark arrestor hood on top of the spark arrestor plate with the “raised” side up and the opening facing AWAY from the engine (Fig. 28). Verify that the exhaust will be directed AWAY from the engine.

Muffler

Spark Arrestor

Screen

Spark Arrestor

Plate

Opening

Engine

Recessed Hole

Spark Arrestor Hood

Assembly Includes:

 

Spark Arrestor Plate

Spark Arrestor

Spark Arrestor Hood

Hood

and Screws

 

 

Screws

 

Fig. 28

8.Replace the two screws you removed in Step 2 and tighten them securely.

9.Reinstall the air filter/muffler cover.

WARNING: If the exhaust deflector assembly is

not tightened securely, it could fall off causing damage to the unit and possible serious personal injury.

CARBURETOR ADJUSTMENT

The idle speed of the engine is adjustable through the air filter/muffler cover (Fig. 29).

NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor adjustments.

Check Fuel Mixture

Old and/or improperly mixed fuel is usually the reason for improper unit performance. Drain and refill the tank with fresh, properly-mixed fuel prior to making any adjustments. Refer to Oil and Fuel Information.

Clean Air Filter

The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow and change the air/fuel mixture. This is often mistaken for an out of adjustment carburetor. Check the condition of the air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance.

Adjust Idle Speed Screw

If, after checking the fuel mixture and cleaning the air filter, the engine still will not idle, adjust the idle speed screw as follows:

1.Start the engine and let it run at a high idle for a minute to warm up. Refer to Starting/Stopping Instructions.

WARNING: The cutting attachment may spin

during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.

Idle Speed Screw

Fig. 29

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McCulloch MT705 manual Spark Arrestor Maintenance, Carburetor Adjustment, Check Fuel Mixture, Clean Air Filter
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MT705 specifications

The McCulloch MT705 is a powerful and versatile garden tractor designed for homeowners who seek efficiency and versatility in lawn maintenance. This model combines traditional mowing capabilities with advanced features that cater to various gardening needs, making it a popular choice among gardening enthusiasts.

One of the standout features of the McCulloch MT705 is its robust engine. Equipped with a powerful and reliable engine, this tractor ensures consistent performance in mowing, mulching, and towing tasks. The engine's design emphasizes fuel efficiency, allowing users to accomplish more without frequent refueling, which is particularly convenient for larger lawns.

The MT705 boasts a cutting width of 105 cm (approximately 41 inches), making it ideal for mowing larger areas swiftly. Users can choose from various cutting heights, offering flexibility according to their lawn’s needs. Thanks to its durable cutting deck, the tractor not only provides a clean cut but is also built to withstand the rigors of outdoor use, ensuring longevity.

An ergonomic design differentiates the McCulloch MT705 from its competitors. Its comfortable seating and user-friendly controls enhance the overall mowing experience. The steering wheel is designed for easy maneuverability, allowing users to navigate around obstacles with ease.

In addition to standard mowing, the MT705 is equipped with a range of attachments available for various tasks. These attachments include mulchers, snow plows, and trailers, making it a multifaceted tool for year-round gardening and landscaping. This adaptability means that owners can tackle any gardening task, from cutting grass to clearing snow or transporting materials.

For enhanced stability and traction, the McCulloch MT705 features a robust chassis and reliable wheel configuration. This ensures that the tractor can handle uneven terrains without compromising performance. Furthermore, the maintenance of this tractor is simplified to ensure it can be kept in excellent working condition with minimal effort.

Overall, the McCulloch MT705 combines power, versatility, and user-friendly features into a single garden tractor, making it a valuable asset for anyone looking to maintain their outdoor spaces efficiently. With its robust construction and advanced capabilities, it stands out as an excellent choice for residential gardening needs.
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