Safety Chain Brake, Chain Sharpening | McCulloch PRO MAC 54 54CC

SAFETY CHAIN BRAKE

Your chain saw is fitted with a safety chainbrake desi- gned to stop the chain in milliseconds in case of kick- back. Always hold the saw firmly in both hands.

The chain brake does not provide a total protection if the machine is used without taking the necessary precautions and maintenances.

The chain brake is intended to engage automatically in case of kickback.

The chain brake can also be engaged manually by pushing the chain brake lever forwards.The manual use of the chain brake is recommended only at idle.

Always test the chain brake before using your saw. Do this by engaging the brake at idle (see below).

Always release the brake before starting.

Kickback may occur if the end of the bar (see illustrated angle) touches any solid object.

Never attempt to start a cut with the end of the bar. Kickback is a violent upward and rearward movement of the bar and may cause you to lose control of the machine. Therefore you should avoid starting a cut with this part of the bar. Always keep a firm grip on the saw with both hands because, in case of kickback, it is the contact of the left hand with the brake lever which will help to engage the brake.

CHAIN BRAKE TESTING:

1The chain brake (A) is disengaged when brake lever is pulled back and locked(chain can move).

2The chain brake (A) is engaged when brake lever is in the position (chain cannot rotate).The chain brake 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 servicing dealer.

3CHAIN CATCHER

This unit is fitted with a chain catcher below the drive spocket. This is intended to stop the rearward movement of the chain in case of breakage or if it should come out of the bar. It should never be removed.

CHAIN SHARPENING

1Chain cutter teeth can be sharpened with a round file, as follows:

CHAIN	FILE
SPR 378 GX	7/32”

The exact chain type is marked on the bottom half of the drive link which runs inside the bar groove.

Filing can be made easier by also using a file holder. The chain can remain fitted on the bar during sharpening. Before commencing, the chain should be tensioned cor- rectly and the chain brake should be activated to prevent the chain from moving.

2To obtain a correct sharpening the file must be carefully held to maintain 3 basic angles:

– “A” Top angle	30° - 35°
– “B” External, side angle	85° - 90°
– “C” Internal, side angle	60°

File in one direction only, from the “inside” of the cutter tooth towards the “outside”.

Do not allow the file to touch the chain as you bring it back to re-position it. Each cutter tooth should be filed with the same number of strokes.

3The file should be held horizontally to the cutter tooth being sharpened.

4Best results to obtain a precise sideways angle can be obtained by holding the file so that it rises 0,5 mm above the top face of the cutter tooth.

5DEPTH GAUGE

Correct depth gauge height is vital to ensure maximum chain life and cutting efficiency.

The height of the depth gauge should be lowered as the cutter tooth is filed back; this height should be checked every 4 or 5 sharpenings.

The best way to do this is to use a flat file and a depth gauge tool.

The correct setting is 0.65 mm below the top edge of the cutter tooth.

The cutter tooth depth gauge should then be rounded (D).

FAULT FINDING TABLE

	Engine runs badly	Engine will not start	The machine runs
	or looses power when cutting	Engine will not start	but does not cut well
	or looses power when cutting		but does not cut well

Check STOP switch is in the position I.	•
Control fuel level min. 25% tank capacity.	•	•
Check air filter is clean.	•	•
Remove spark plug, dry it, clean it	•	•
and adjust it, and replace it, if necessary.	•	•
Control and adjust the carburetor screws if necessary.		•
Change fuel filter. Contact your dealer.		•
Carefully follow the cutting accessory assembly instructions.			•
Check chain is sharp. Otherwise, contact your dealer.			•
Engine still gives trouble: contact your dealer.

PRO MAC 61 59CC, PRO MAC 54 54CC specifications

The McCulloch PRO MAC 61 and PRO MAC 54 chainsaws are powerful tools designed for both professional loggers and enthusiastic DIYers. Known for their exceptional performance and reliability, these models are equipped with advanced technologies that enhance user experience while ensuring peak efficiency.

The PRO MAC 61 boasts a robust 59CC engine, providing significant horsepower for demanding cutting tasks. This chainsaw features a high-speed chain system that allows for swift cuts through tough materials, making it ideal for felling trees, bucking logs, and performing heavy-duty tasks. Its design ensures reduced vibration, which is crucial for prolonged use, minimizing user fatigue.

Equipped with an innovative air intake system, the PRO MAC 61 enhances airflow to the engine, maintaining optimal performance even in challenging conditions. This model also includes a large fuel tank, which reduces the frequency of refueling breaks and allows the user to work longer hours without interruption.

On the other hand, the PRO MAC 54 is powered by a slightly smaller 54CC engine, yet it still delivers formidable performance. This model is characterized by its lightweight design, making it easier to handle during meticulous cutting tasks. The PRO MAC 54 is perfect for users who require versatility—its balance between power and weight allows for precision cutting in tight spaces.

Both chainsaws feature an ergonomic handle and anti-vibration technology, which enhances comfort during extended use. Additionally, they come with tool-less chain tensioning systems, allowing users to quickly and easily adjust the chain tension for optimal cutting performance without needing additional tools.

Safety is paramount in both models, with essential features such as a chain brake that provides immediate stopping power in case of kickback. The fuel and oil systems are designed for easy maintenance, ensuring that both chainsaws can be kept in optimal condition with minimal effort.

In summary, the McCulloch PRO MAC 61 and PRO MAC 54 chainsaws represent the pinnacle of power, efficiency, and user-friendliness. With their advanced technologies, ergonomic designs, and safety features, these chainsaws are well-suited for a broad spectrum of cutting tasks, making them reliable companions for professionals and hobbyists alike. Whether tackling large logging projects or handling light pruning, McCulloch delivers exceptional performance that meets the demands of any job.