McCulloch MAC 838 Chain Brake, Important Points to Remember, Starting a Warm Engine

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mixed with a good quality 2-cycle air-cooled engine oil designed to be mixed at a ratio of 40:1. A 40:1 ratio is obtained by mixing 0,125 liter of oil with 5 liters of unleaded gasoline. DO NOT USE automotive or boat oil. These oils will cause engine damage. When mixing fuel follow the instructions printed on the container. 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 storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, empty the fuel system before storage for 30 days or longer. Drain the gas tank, start the en- gine and let it run until the fuel lines and carbu- retor are empty. Use fresh fuel next season. Never use engine or carburetor cleaner prod- ucts in the fuel tank or permanent damage may occur.

CHAIN BRAKE

Ensure chain brake is disengaged by pulling the front hand guard back toward the front han- dle as far as possible. The chain brake must be disengaged before cutting with the saw.

WARNING: The chain must not move when the engine runs at idle speed. If the chain moves at idle speed refer to CAR- BURETOR ADJUSTMENT within this manual. Avoid contact with the muffler. A hot muffler can cause serious burns.

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

To start the engine, hold the saw firmly on the ground as illustrated below. Make sure the chain is free to turn without contacting any object.

Use only 40 --- 45 cm of rope per pull.

Hold saw firmly while pulling starter rope. Starter Rope Handle

Left Hand on Front Handle

Right Foot Through Rear Handle

IMPORTANT POINTS TO REMEMBER

When pulling the starter rope, do not use the full extent of the rope as this can cause the rope to break. Do not let starter rope snap back. Hold the handle and let the rope rewind slowly.

For cold weather starting, start the unit at full choke; allow the engine to warm up before squeezing the throttle trigger.

NOTE: Do not cut material with the choke/fast idle lever at the FULL CHOKE position.

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

NOTE: In the following steps, when the cho- ke/fast idle lever is pulled out to the full ex- tent, the correct throttle setting for starting is set automatically.

IGNITION

SWITCH

ON

STOP

Choke

Lever

1.Move ON/STOP switch to the ON posi- tion.

2.Slowly press primer bulb 6 times.

3.Pull out choke/fast idle to the full extent (to the FULL CHOKE position).

4.Pull the starter rope sharply 5 times with your right hand. Then, proceed to the next step.

NOTE: If the engine sounds as if it is trying to start before the 5th pull, stop pulling and immediately proceed to the next step.

5.Push the choke/fast idle lever in to the HALF CHOKE position.

CHOKE/FAST IDLE LEVER

OFF

HALF

FULL

6.Pull the starter rope sharply with your right hand until the engine starts.

7.Allow the engine to run for approximately 30 seconds. Then, squeeze and release throttle trigger to allow engine to return to idle speed.

STARTING A WARM ENGINE

1.Move ON/STOP switch to the ON posi- tion.

2.Pull the choke/fast idle lever out to the FULL CHOKE position to set the fast idle, then push the lever in to the HALF CHOKE position.

3.Slowly press the primer bulb 6 times.

4.Pull the starter rope sharply with your right hand until the engine starts.

5.Squeeze and release throttle trigger to allow engine to return to idle speed.

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Contents Rev 7/15/09 BRW Identification of Symbols Identification What is WHAT?Plan Ahead Safety RulesOperate Your SAW Safely ShoesChain SAW Safety Equipment Maintain Your SAW in Good Working OrderHandle Fuel with Caution Reduce the Chance of Kickback KickbackMaintain Control Avoid Pinch-KickbackElbow locked Thumb on underside of handlebar Kickback Safety FeaturesElbow locked Guide bar up and back toward the operatorAssembly Attaching the Bumper SpikeAttaching the BAR & Chain Operating Your Unit Adjusting the tensionBefore Starting Engine BAR and Chain Lubrication Fueling EngineImportant Points to Remember Chain BrakeStarting a Warm Engine Right Foot Through Rear HandleChain Brake Cutting MethodsImportant Points Tree Felling TechniquesNotch CUT and Felling the Tree Felling Large TreesCutting a Fallen Tree Important pointsBucking Without a Support Bucking Using a LOG or SUP- Port StandLimbing and Pruning Important Points LimbingCleaning the air filter Service and AdjustmentsBAR Maintenance AIR FilterTo Sharpen Chain Spark PlugChain Sharpening Tools requiredCarburetor Adjustment StorageWrong Troubleshooting Table Cause Remedy Declaration of ConformityEC Declaration of Conformity Only applies to Europe Technical Data Sheet Page Page Husqvarna AB SE--561 82 Huskvarna Sweden

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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