Starting Stopping | McCulloch PRO MAC 72 manual

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IMPORTANT

Always shake this fuel mix vigorously each time you use it. Fuel mix properties deteriorate with time, we therefore recommend that you only make the quantity of fuel mix you will need for each usage. Do not use fuel mix more than a week old as this could damage the engine.

WARNING

Do not smoke when re-fuelling. Always open the fuel cap slowly. Re-fuel in open spaces only, keeping away from naked flames or sparks.

Always store fuel in an approved container.

SAFE STORAGE OF FUEL

Petrol is highly inflammable. Put out all cigarettes, pipes and cigars before working with petrol. Avoid spilling petrol. Store fuel in a cool, well ventilated place, in an approved container specifically designed for the purpose. Never store engine with fuel in the tank in enclosed, poorly ventilated areas, where fuel fumes may reach an open flame, spark or pilot light such as in a furnace, water heater, clothes dryer etc. Petrol fumes can cause an explosion or a fire. Do not store large amounts of fuel. To prevent possible restarting problems avoid running the fuel tank dry. This also helps to extend engine life.

CHAIN LUBRICATION

IMPORTANT The service life of the bar and chain depends on good lubrication.

Always use chain lubricating oil of medium viscosity. We recommend special McCulloch chain lubricating oil. Never use waste oil for this purpose. This results in damage to the bar, the chain and the oil pump. Refill the chain oil tank each time the saw is refuelled.

NOTE: Saw chain stretches during use, particularty when it is new, and it will occasionally be necessary to adjust and tighten it. A new chain will require adjustment after about 5 minutes of operation.

•The mechanical oil pump for chain lubrication can be adjusted.

The feed rate of the chain oil pump can be adjusted by means of the regulating screw (A) (see details in the illustration). The oil feed rate is increased by turning the regulating bolt counterclockwise .

IMPORTANT - The chain oil feed is reduced to a minimum when the regulating bolt is completely closed (turning clockwise) .

ESTARTING AND

STOPPING

IMPORTANT - Never start or operate the saw unless bar and chain are properly installed. Before starting always move the saw away from the fuelling area and place it on firm, flat surface, the guide bar to the front.

STARTING A COLD ENGINE

Check that the chain brake is in the disengaged position moving the lever (L) backwards (towards the front handle). Check that the ignition switch is not in the “STOP” position.

Depress thrtottle trigger lockout (A). Depress throttle trigger (B) and then pull up the throttle lock (C).

Release first the throttle trigger (B) and then the throttle lock (C).

In this way the throttle lock engages and your left hand is free to grip the saw firmly.

Pull out the choke control (E). Activate the decompression pressing the valve (D). Hold the saw firmly as shown in illustration and pull the starter rope until the engine fires once.

Push in the choke control (E). Re-activate the decompression system by depressing valve (D). Pull the starter rope until the engine starts.

Allow engine to warm up for a few seconds, holding the saw firmly.

Beware of moving chain.

Release the safety lock by pressing the throttle trigger (B).

STOP. The engine is stopped by moving the ignition switch to STOP position.

IMPORTANT. After lengthy use of the chain saw at full speed, we recommend to run the engine for a few seconds at idle speed before stopping it.

STARTING A WARM ENGINE

Check that the ignition switch is not in the “stop” position and do not use the throttle lock.

Hold the saw firmly, press valve (D) for decompression and pull the starter rope.

STARTING A WARM ENGINE AFTER FUELLING

In the fuel tank as run completely dry, procede to start as with a cold engine.

PRO MAC 72 specifications

The McCulloch PRO MAC 72 is a classic chainsaw, highly regarded by tree care professionals and woodcutters alike. Introduced in the late 1980s, it quickly gained a reputation for its robust build and reliable performance, making it a prized possession among those who value quality tools.

At the heart of the PRO MAC 72 is a powerful 72cc two-stroke engine, which delivers an impressive output that ensures strong cutting performance. This robust engine design allows for efficient power delivery, enabling the chainsaw to tackle even the most challenging tasks with relative ease. With a maximum speed of around 13,000 RPM, it can handle hardwoods and dense materials that would often be problematic for less powerful saws.

One of the standout features of the McCulloch PRO MAC 72 is its lightweight construction, considering its power. Weighing in at around 11.5 pounds, it strikes a balance between portability and stability, allowing users to operate it for extended periods without excessive fatigue. Its ergonomic handle design also enhances comfort and control, facilitating high maneuverability as you navigate through various cutting scenarios.

The chainsaw is equipped with an automatic oiling system that continuously lubricates the chain, ensuring optimal performance and reducing wear during operation. This feature not only prolongs the lifespan of the chain but also minimizes maintenance requirements, allowing users to focus on their cutting tasks without frequent interruptions.

Safety is a primary concern with any chainsaw, and the PRO MAC 72 incorporates several safety features to protect the user. It is outfitted with a chain brake system that engages automatically in the event of kickback, providing a critical layer of safety while in use. Additionally, the throttle lock ensures that inadvertent acceleration is minimized, keeping the operator secure while handling the saw.

Durability is another hallmark characteristic of the McCulloch PRO MAC 72. Built with high-quality materials, it withstands the rigors of daily use in demanding environments. Whether used in forestry, landscaping, or construction, the chainsaw's rugged design ensures that it remains functional and reliable.

In summary, the McCulloch PRO MAC 72 chainsaw is a blend of power, durability, and user-centric design. With its efficient engine, lightweight structure, automatic lubrication system, and essential safety features, it continues to be a favored choice among professionals needing a trusted tool for demanding cutting tasks. Those who invest in a PRO MAC 72 can expect not only impressive performance but also reliability that stands the test of time.