Mcculloch Mac '1840b' Manual

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User manuals for 1990s yard equipment tend to be hard to find. Fortunately, the basic operating instructions for a McCulloch MAC 2816 string trimmer are similar to those of many similar gas trimmers. Keeping weed trimmers running requires periodic cleaning of external and internal components, proper fuel and oil mix, and using the trimmer only for the tasks it was designed for, such as trimming long grass and weeds.

MAC 2618 Anatomy

Once you know the MAC 2618's basic parts, you'll be familiar with your machine and better able to use and maintain it. The McCulloch MAC 2816 consists of a string head, debris shield, handle and engine assembly attached to a metal drive shaft. Components of the engine assembly you should be able to see include a hand grip with throttle trigger, starter pull handle, spark plug and plug wire, ignition switch, air filter cover, fuel tank, fuel primer bulb, choke lever and muffler shield. You can get to the spark arrester through the bottom opening in the muffler shield.

Disassembling the String Head

You'll need to disassemble the string head to inspect or replace the trimmer line on the e MAC 2618. Turn the trimmer off, place it on the ground or a sturdy table and turn the retaining knob -- also called bump knob -- on the bottom of the head counterclockwise with your fingers or a wrench. When you've removed the knob, slide the line spool and tension spring off the shaft to reveal the line. Take care not to misplace the retaining knob or spring.

Replacing Trimming Line

Measure and cut 18 feet of 0.080- or .095-inch plastic cutting line. Insert both ends into one set of paired holes on the spool's center -- one end through one hole, the other through the remaining hole. Pull both ends though the holes evenly and completely until no slack remains and line is securely looped through the spool holes. Beginning at the spool, grasp both strings and wrap them evenly in a clockwise direction around the spool until you're left with approximately 6 inches of line. Insert one string end through one of two opposing external spool holes, repeating with the other string end end through the opposite hole. Reassemble the string head in the reverse order in which you disassembled it and trim the exposed line to 5 inches or less before starting the McCulloch MAC 2816.

Fuel and Oil Mixture Is Essential

Mix fresh gasoline in a 40:1 ratio with any high-quality two-stroke engine oil in an approved gasoline container for the McCulloch MAC 2816. Pour one-half of the gasoline in to the container, add the proper amount of two-stroke oil -- detailed instructions with sample fuel and oil quantities will be printed on the oil container. Add the remaining gasoline, cap the container and swirl gently to mix. If the gasoline will be stored for more than one month, add fuel stabilizer to the mixture, following label instructions. Using old or untreated gasoline may cause hard starting and poor engine performance. You can also buy ready-mixed oil and fuel at home improvement stores.

Starting a Cold or Warm Engine

Start a cold McCulloch MAC 2816 by placing the trimmer on the ground. Ensure the ignition switch is in the 'on' position. Slide the choke lever to the marked 'choke' position and press the rubber carburetor priming bulb 10 times. Grasp the grip with one hand while pulling up on and holding the throttle trigger with your finger. Pull the starter handle four times, slide the choke lever to the 'start' position and pull the start handle four more times until the engine is running. Once the engine has run for 10 seconds, slide the choke lever to 'run' and release the throttle trigger. If the engine fails to start, start over from the beginning. To start a warm engine, depress the throttle trigger, slide the choke lever to 'start' or 'run' and pull the starter handle four times. To shut the engine down, turn the switch to the 'off' position.

Maintenance Tips

Ensure the engine switch is turned to 'off' and the engine is cool before performing maintenance on the McCulloch MAC 2816. Clean the spark plug by gently pulling the wire boot off. Insert a spark plug wrench and remove the plug by turning counterclockwise and pulling the plug outward. Inspect the electrode, clean it with emery cloth, if necessary, check for 0.025-inch gap and adjust if needed with a spark plug gap tool. If the ceramic insulation is cracked, install a new spark plug. Clean the air filer by removing the two air filter cover screws with a screwdriver. Remove the air filter, wash it with soap and water, allow it to air dry and reinstall it. Clean or replace the spark arrester screen by inserting a screwdriver into the slot in the muffler shield. Turn the retaining screw counterclockwise and remove the spark arrester cover and screen. Clean the screen with a utility brush or replace it if it is damaged.

References (3)

Resources (2)

About the Author

Matt McKay began his writing career in 1999, writing training programs and articles for a national corporation. His work has appeared in various online publications and materials for private companies. McKay has experience in entrepreneurship, corporate training, human resources, technology and the music business.

Ge mac 1200 service manual. The system can also be configured to incorporate the proven 12SLTM ECG analysis program.Adding the 12SL program creates an electrocardiograph with the industry leading interpretation program and measurements.

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McKay, Matt. 'Instructions for the McCulloch Weed Wacker MAC 2816.' Home Guides | SF Gate, http://homeguides.sfgate.com/instructions-mcculloch-weed-wacker-mac-2816-102406.html. Accessed 25 August 2019.
McKay, Matt. (n.d.). Instructions for the McCulloch Weed Wacker MAC 2816. Home Guides | SF Gate. Retrieved from http://homeguides.sfgate.com/instructions-mcculloch-weed-wacker-mac-2816-102406.html
McKay, Matt. 'Instructions for the McCulloch Weed Wacker MAC 2816' accessed August 25, 2019. http://homeguides.sfgate.com/instructions-mcculloch-weed-wacker-mac-2816-102406.html
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10

11

4 - FUEL AND LUBRICATION

4-1. FUEL

Use regular grade unleaded gasoline mixed with Genuine
McCulloch 40:1 2-cycle engine oil for best results. Mac 10 10a manual downloads. Use mix-
ing ratios in Section 4-3.

Never use straight gasoline in your unit. This will cause
permanent engine damage and void the manufactur-

er’s warranty for that product. Never use a fuel mixture that
has been stored for over 90 days.

If 2-cycle lubricant other than Genuine McCulloch
Lubricant is to be used, it must be a premium grade oil

for 2-cycle air cooled engines mixed at a 40:1 ratio. Do not
use any 2-cycle oil product with a recommended mixing
ratio of 100:1. If insufficient lubrication is the cause of
engine damage, it voids the manufacturer’s engine warran-
ty for that occurrence.

4-2. MIXING FUEL

Mix fuel with Genuine McCulloch brand 2 cycle oil in an
approved container. Use mixing table for correct ratio of fuel
to oil. Shake container to ensure thorough mix.

Lack of lubrication voids engine warranty.

4-3.FUEL AND LUBRICATION SYMBOLS

FUEL MIXING TABLE

4-4.

RECOMMENDED FUELS

Some conventional gasolines are being blended with oxy-
genates such as alcohol or an ether compound to meet
clean air standards. Your McCulloch engine is designed to
operate on any gasoline intended for automotive use
including oxygenated gasolines.

4-5.

CHAIN AND BAR LUBRICATION

Always refill the chain oil tank each time the fuel tank is
refilled. We recommend using Genuine McCulloch Chain,
Bar and Sprocket Oil, which contains additives to reduce
friction and wear and to assist in the prevention of pitch for-
mation on the bar and chain.

Mcculloch mac

Gasoline and Oil
Mix 40:1

Oil Only

5 - OPERATING INSTRUCTIONS

5-1.

ENGINE PRE-START CHECKS

WARNING

Quantum software manual. Before using the MAC Quantum Wash™, read the latest version of the product’s Safety and Installation Manual, paying particular attention to the Safety Precautions section. This User Guide is a supplement to the Installation and Safety Manual that is supplied with the MAC Quantum Wash. MAC Quantum Wash Safety and Installation Manual. Page 11: Dmx Data Link 1. Connect the DMX data output from the controller to the MAC Quantum Wash’s data input (male XLR) socket. Run the data link from the MAC Quantum Wash’s data output (female XLR) socket to the data input of the next fixture. The latest versions of this Safety and Installation Manual and the MAC Quantum Profile User Guide are available for download from the MAC Quantum Profile Product Support page on the Martin™ website at www.martin.com. Before you install, operate or service the MAC Quantum Profile, check the Martin™.

Never start or operate the saw unless the bar and chain are
properly installed.
1.

Fill the fuel tank (A) with correct fuel mixture (Figure
5-1A).

2.

Fill the oil tank (B) with correct chain and bar oil
(Figure 5-1A).

3.

Be certain the CHAIN BRAKE

®

is disengaged (C)

before starting unit (Figure 5-1A).

NOTE: See page 9 Fig. 3-5A & 3-5B.

5-2.

TO START ENGINE

1.

Press red STOP switch to the “I” ON position (Fig. 5-
2A).

2.

Pull out the choke (A) to the point where it latches in
place. (Fig. 5-2B)

3.

Push the primer bulb (B) 10 times. (Fig. 5-2C)

4.

Latch throttle advance: depress latch and hold (C)
squeeze throttle trigger (D) release trigger and then
the latch. (Fig. 5-2D)

5.

Place the saw on a firm and level surface. Hold the
saw securely with your foot as illustrated. Pull sharply
on the starter 4 times. Watch the chain in case it runs.
(Fig. 5-2E)

NOTE: Easy Start power assist starting significantly
reduces the pulling effort. Pull the starter cord slowly to
about 3 1/2 feet, the power assist will turn over the engine
with little resistence from the engine.
6.

Push in the choke (E) as far it will go. (Fig. 5-2F)

7.

Hold the saw securely and tug sharply on the starter
4 times. The engine should start.

8.

Epson xp 830 how to use manual feed printing from mac. If printing from a computer, selectRear Paper Feed Slot for theSource (Windows) or Paper Source (OS X) setting. If printing from the product's touch screen,select Rear Paper Feed Slot forthe Paper Source setting.

Let the engine run for 10 seconds to warm up. Press
the trigger (F) and put it into idle. (Fig. 5-2G)

9.

If the engine does not start up, repeat the above
steps.

IMPORTANT IDLING INFORMATION

In some cases due to operating conditions (altitude, tem-
perature etc.) your chain saw may need a slight adjustment
to the idle speed.

After warm up - See the User's Manual section 5-2, step 7
- If unit does not Idle after restarting 2 times, follow these
steps to adjust idle.

1.

Idle adjustment access (G). (Figure 5-2H)

2.

Using a Phillips or slotted screwdriver - turn screw 1/4
to 1/2 turn clockwise (to the right). Unit should then
idle properly. (Figure 5-2H)

NOTE: If chain turns while idling - turn screw back to the
left until chain stops and unit continues to idle.

5-1A

C

A

B

5-2A

5-2B

A

5-2C

B

Mcculloch Mac '1840b' Manual 2016

5-2D

5-2E

C

D

5-2F

A

5-2G

F

5-2F

5-2G

G

GASOLINE

McCulloch 40:1 Ratio

Lubricant

1 U.S. Gal.

3. Advanced manual on excel 2011 mac. 2 oz.

95ml (cc)

5 Liters

4.3 oz.

125ml (cc)

1 lmp. Gal.

4.3 oz.

125ml (cc)

Mixing

Procedure

40 Parts Gasoline to

1 Part Lubricant

Mcculloch Mac '1840b' Manual 2017

1ml=1cc

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