OPERATION

WARNING: Be sure to read the fuel information in the safety rules before you be- gin. If you do not understand the safety rules, do not attempt to fuel your unit. Contact an authorized service dealer.

FUELING ENGINE

WARNING: Remove fuel cap slowly when refueling.

This engine is certified to operate on unleaded gasoline. Before operation, gasoline must be mixed with a good quality 2-cycle air-cooled en- gine oil designed to be mixed at a ratio of 40:1 (2.5%). A 40:1 ratio is obtained by mixing 5 liters of unleaded gasoline with 0,125 liter of oil. DO NOT USE automotive oil or boat oil. These oils will cause engine damage. When mixing fuel, follow instructions printed on oil container. Once oil is added to gasoline, shake container mo- mentarily to assure that the fuel is thoroughly mixed. Always read and follow the safety rules relating to fuel before fueling your unit.

IMPORTANT

Experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during stor- age. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, empty the fuel system before stor- age for 30 days or longer. Drain the gas tank, start the engine and let it run until the fuel lines and carburetor are empty. Use fresh fuel next season. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur.

HOW TO STOP YOUR UNIT

S To stop the engine, move the ON/OFF switch to the OFF position.

HOW TO START YOUR UNIT

WARNING: The trimmer head will turn while starting the engine. Avoid any con- tact with the muffler. A hot muffler can cause serious burns.

STARTING A COLD ENGINE (or a warm engine after running out of fuel)

Starting Position

1.Set unit on a flat surface.

2.Move ON/OFF switch to the ON position.

3.Slowly press the primer bulb 6 times.

4.Move choke lever to FULL CHOKE posi- tion.

5.Squeeze and hold trigger through all re- maining steps.

Primer Bulb

Choke

Lever

Starter Handle

6.Pull starter rope handle sharply until en- gine sounds as if it is trying to start, but do not pull rope more than 6 times.

7.As soon as engine sounds as if it is trying to start, move choke lever to HALF CHOKE.

8.Pull starter rope sharply until engine runs, but no more than 6 pulls. If the engine doesn’t start after 6 pulls (at the HALF CHOKE position), move the choke lever to the FULL CHOKE position and press the primer bulb 6 times. Squeeze and hold the throttle trigger and pull the starter rope 2 more times. Move the choke lever to the HALF CHOKE position and pull the starter rope until the engine runs, but no more than 6 pulls. NOTE: If engine still doesn’t start, it is probably flooded. Proceed to START-

ING A FLOODED ENGINE.

9.Once the engine starts, allow it to run 10 seconds, then move the choke lever to RUN. Allow the unit to run for 30 more seconds at RUN before releasing the throttle trigger. NOTE: If engine dies with the choke lever in the RUN position, move the choke lever to the HALF CHOKE position and pull the rope until engine runs, but no more than 6 pulls.

STARTING A WARM ENGINE

1.Move ON/OFF switch to the ON position.

2.Move the choke lever to the HALF CHOKE position.

3.Squeeze and hold the throttle trigger. Keep throttle trigger fully squeezed until the engine runs smoothly.

4.Pull starter rope sharply until engine runs, but no more than 5 pulls.

5.Allow engine to run 15 seconds, then move the choke lever to the RUN position.

5

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McCulloch 545097742 Operation, Fueling Engine, HOW to Stop Your Unit, HOW to Start Your Unit, Starting a Warm Engine
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545097742 specifications

The McCulloch 545097742 is a reliable and powerful chainsaw designed to cater to both professionals and avid DIY enthusiasts. Equipped with a host of impressive features, it offers an efficient cutting experience for a variety of tasks, including tree felling, limb removal, firewood cutting, and general yard maintenance.

One of the standout features of the McCulloch 545097742 is its robust engine. The chainsaw is powered by a 50 cc, 2-stroke engine that delivers high performance while maintaining fuel efficiency. This powerful engine allows users to tackle even the most demanding cutting tasks with ease.

The chainsaw boasts a 15-inch bar and chain, providing ample cutting length for larger branches and logs. The bar is specially designed for reduced friction, which not only enhances cutting efficiency but also prolongs the life of the chain. The low-kickback chain design enhances safety and minimizes the risk of accidents during operation.

Comfort and user-friendliness are paramount with the McCulloch 545097742. The chainsaw features an ergonomic handle design that provides a comfortable grip, reducing fatigue during extended use. The adjustable chain tensioning system allows operators to make quick and easy adjustments to the chain's tension, ensuring optimal cutting performance.

Another important technological aspect of the McCulloch 545097742 is the easy-start system. The chainsaw is equipped with a simple pull-start mechanism that significantly reduces the effort required to start the engine, making it accessible for users of all skill levels.

Safety features are integrated into the design, including a chain brake that quickly stops the chain in the event of kickback. This feature enhances user safety and provides peace of mind while operating the chainsaw.

Additionally, the McCulloch 545097742 is constructed with durability in mind. Its rugged design can withstand the rigors of heavy-duty use, while the robust materials used in its construction ensure longevity.

Overall, the McCulloch 545097742 combines power, performance, and safety, making it an excellent choice for anyone in need of a dependable chainsaw for their cutting needs. Whether you are a professional arborist or a hobbyist, this chainsaw is designed to deliver impressive results while providing user comfort and safety.
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