SMake your fist cut 1/3 of the way through the bottom of the limb.

SNext make a 2nd cut all the way through the limb. Then cut a third overcut leaving a 3 to 5 cm collar from the trunk of the tree.

Second cut

Third cut

Collar

First cut

Pruning technique

SERVICE AND ADJUSTMENTS

WARNING: Improper maintenance could result in serious engine damage or in se- rious injury.

WARNING: Disconnect the spark plug before performing maintenance, except for carburetor adjustments.

We recommend all service and adjustments not listed in this manual be performed by an Authorized Service Dealer.

MAINTENANCE SCHEDULE

Check:

Fuel mixture level . . . . Before each use Bar lubrication . . . . . . . Before each use Chain tension . . . . . . . Before each use Chain sharpness . . . . Before each use For damaged parts . . Before each use For loose caps . . . . . . Before each use For loose fasteners . . . Before each use For loose parts . . . . . . Before each use

Inspect and Clean:

Bar . . . . . . . . . . . . . . . . Before each use Complete saw . . . . . . . After each use Air filter . . . . . . . . . . . . . Every 5 hours* Chain brake . . . . . . . . Every 5 hours* Spark arresting screen

and muffler . . . . . . . . . Every 25 hours* Replace spark plug . Yearly Replace fuel filter . . . Yearly

* Hours of Operation

AIR FILTER

CAUTION: Do not clean filter in gaso- line or other flammable solvent to avoid creating a fire hazard or producing harmful evaporative emissions.

Cleaning the air filter:

A dirty air filter decreases engine perform- ance and increases fuel consumption and harmful emissions. Always clean after every 5 hours of operation.

1.Clean the cover and the area around it to keep dirt and sawdust from falling into the carburetor chamber when the cover is removed.

2.Remove the parts as illustrated.

3.Wash the filter in soap and water. Rinse in clean cool water. Air dry completely before reinstalling.

4.Reinstall parts.

Cylinder

Air FilterCover

Cover

Air Filter

BAR MAINTENANCE

If your saw cuts to one side, has to be forced through the cut, or been run with an improper amount of bar lubrication it may be neces- sary to service your bar. A worn bar will dam- age your chain and make cutting difficult.

After each use, ensure ON/STOP switch is in the STOP position, then clean all sawdust from the guide bar and sprocket hole.

To maintain guide bar:

SMove ON/STOP switch to the STOP posi-

tion.

S Loosen and remove bar nuts and chain brake. Remove bar and chain from saw.

SClean the oil holes and bar groove after each 5 hours of operation.

Remove Sawdust From

Guide Bar Groove

Oil Holes

S Burring of guide bar rails is a normal process of rail wear. Remove these burrs with a flat file.

SWhen rail top is uneven, use a flat file to re- store square edges and sides.

File Rail Edges

and Sides

Square

Worn Groove

Correct Groove

13

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McCulloch MAC 838 instruction manual Service and Adjustments, AIR Filter, Cleaning the air filter, BAR Maintenance
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MAC 838 specifications

The McCulloch MAC 838 is a robust lawn mower designed for homeowners seeking efficiency and reliability in maintaining their gardens and yards. Known for its powerful performance, this model incorporates several features and technologies that enhance its usability and effectiveness in various mowing conditions.

One of the standout features of the MAC 838 is its high-performance engine. It is equipped with a reliable 38cc 2-stroke engine that provides ample power for cutting through thick grass and tackling uneven terrain. This engine is designed for easy starting, ensuring that users spend less time troubleshooting and more time mowing.

The MAC 838 offers a generous cutting width of 16 inches, making it suitable for medium to large yards. This wider blade allows for quicker mowing sessions, reducing the overall time spent on yard work. Moreover, the cutting height is adjustable, with multiple settings that range from 1 to 2.5 inches. This flexibility allows users to customize their mowing experience based on grass type and desired lawn height.

Another impressive characteristic of the McCulloch MAC 838 is its ergonomic design. The handle is adjustable, providing comfort and ease of use for operators of different heights. Additionally, the mower is designed to be lightweight, which enhances maneuverability and reduces fatigue during extended use. The user-friendly controls are intuitively located, allowing for smooth operation.

The MAC 838 also features a robust cutting deck made from durable materials that ensure longevity. Its design not only supports efficient cutting but also facilitates easy cleaning and maintenance. After mowing, users can simply wash the deck with a hose to remove grass clippings, keeping the mower in optimal condition.

Safety is a priority with the McCulloch MAC 838. It includes safety features such as a blade brake system that stops the blade quickly when needed, preventing accidents. This added layer of security assures users that they can operate the mower confidently.

In summary, the McCulloch MAC 838 delivers a combination of power, efficiency, and user-friendly features. Its durable construction and innovative technologies make it an excellent choice for those who value a reliable mower that performs well in various conditions. With its adjustable settings and ergonomic design, the MAC 838 stands out as a practical solution for lawn care needs.
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