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SECTION 1: IMPORTANT SAFE OPERATION PRACTICES

This Symbol Points Out Important Safety Information Which, If Not Followed, Could Endanger The
Personal Safety And/or Property Of Yourself And Others. Read And Follow All Instructions In This
Manual Before Attempting To Operate Your Trimmer. Failure To Comply With These Instructions May
Result In Personal Injury. When You See This Symbol–Heed Its Warning.

DANGER:

Your unit was built to be operated according to the rules for safe operation in this 

manual. As with any type of power equipment, carelessness or error on the part of the operator can
result in serious personal injury. This trimmer is capable of amputating hands and feet. Failure to
observe the following instructions could result in serious injury or death.

WARNING:

Engine Exhaust, some of its constituents, and certain vehicle components contain or emit

chemicals known to State of California to cause cancer and birth defects or other reproductive harm.

READ ALL INSTRUCTIONS 

BEFORE OPERATING

Read the instructions carefully. Be familiar with
the controls and proper use of the unit.

Do not operate this unit when tired, ill, or under
the influence of alcohol, drugs, or medication.

Children and teens under the age of 15 must not
use the unit, except for teens guided by an adult.

Inspect the unit before use. Replace damaged
parts. Check for fuel leaks. Make sure all fasten-
ers are in place and secure. Replace cutting
attachment parts that are cracked, chipped, or
damaged in any way. Make sure the cutting
attachment is properly installed and securely fas-
tened. Be sure the cutting attachment shield is
properly attached, and positioned as recom-
mended. Failure to so can result in personal injury
to the operator and bystanders, as well as dam-
age to the unit.

Use only 0.080 inch (2.03 mm) diameter genuine
manufacturer’s replacement line. Never use
metal-reinforced line, wire, chain, or rope, etc.
These can break off and become a dangerous
projectile. 

Be aware of the risk of injury to the head, hands
and feet.

Clear the area to be cut before each use. Remove
all objects such as rocks, broken glass, nails,
wire, or string which can be thrown or become
entangled in the cutting attachment. Clear the
area of children, bystanders, and pets. At a mini-
mum, keep all children, bystanders and pets out-
side a 50 feet (15 m) radius; there still may be a
risk to bystanders from thrown objects.
Bystanders should wear eye protection. If you are
approached, stop the engine and cutting attach-
ment immediately.

Squeeze the throttle control and check that it
returns automatically to the idle position. Make all
adjustments or repairs before using unit.

This unit was not designed to be used as a 
brushcutter. Do not attach or operate this unit
with any type of brushcutting blade or brushcut-
ting attachment.

SAFETY WARNINGS FOR GAS TRIMMERS

WARNING: Gasoline is highly flammable, and its
vapors can explode if ignited. Take the following pre-
cautions:

Store fuel only in containers specifically designed
and approved for the storage of such materials.

Always stop the engine and allow it to cool before 
filling the fuel tank. Never remove the cap of the
fuel tank, or add fuel, when the engine is hot.
Never operate the unit without the fuel cap
securely in place. Loosen the fuel tank cap slowly
to relieve any pressure in the tank.

Add fuel in a clean, well-ventilated area outdoors
where there are no sparks or flames. Slowly
remove the fuel cap only after stopping engine.
Do not smoke while fueling or mixing fuel. Wipe
up any spilled fuel from the unit immediately. 

Avoid creating a source of ignition for spilled fuel.
Do not start the engine until fuel vapors dissipate.

Move the unit at least 30 feet (9.1 m) from the
fueling source and site before starting the engine.
Do not smoke, keep sparks and open flames from
the area while adding fuel or operating the unit.

WHILE OPERATING

Never start or run the unit inside a closed room or
building. Breathing exhaust fumes can kill.
Operate this unit only in a well ventilated area
outdoors. 

Wear safety glasses or goggles that are marked
as meeting ANSI Z87.1 standards, and ear/hear-
ing protection when operating this unit. Wear a
face or dust mask if the operation is dusty.

Wear heavy, long pants, boots, gloves and a long 
sleeve shirt. Do not wear loose clothing, jewelry,
short pants, sandals or go barefoot. Secure hair
above shoulder level.

The cutting attachment shield must always be in
place while operating the unit. Do not operate
unit without both trimming lines extended, and
the proper line installed. Do not extend the trim-
ming line beyond the length of the shield.

Summary of Contents for 41AD-280G000

Page 1: ...ark arrester is used it should be maintained in effective working order by the operator In the State of California the above is required by law Section 4442 of the California Public Resources Code Oth...

Page 2: ...help from our Customer Support Department or an authorized dealer You can locate the model number by looking on the bottom side of the shaft housing next to the shaft grip A sample model plate is exp...

Page 3: ...area of children bystanders and pets At a mini mum keep all children bystanders and pets out side a 50 feet 15 m radius there still may be a risk to bystanders from thrown objects Bystanders should w...

Page 4: ...ories approved by the manufacturer for this unit These are available from your authorized service dealer Use of any non approved parts or accessories could lead to serious injury to the user or damage...

Page 5: ...from operation When turned off they remain hot for a short time SHARP BLADE WARNING Sharp blade on cutting attachment shield To prevent serious injury do not touch line cutting blade DO NOT USE BLADES...

Page 6: ...See Figure 2 5 Tighten the wing nut until the D handle is secure SECTION 2 ASSEMBLING YOUR TRIMMER Installing the Cutting Attachment Shield Use the following instructions if the cutting attach ment s...

Page 7: ...on and off The switch must be in the START position to start the unit See Figure 5 Choke Control The choke control is located above the air filter muffler cover It is used to enrich the fuel mixture w...

Page 8: ...to the unit s fuel tank CAUTION For proper engine operation and maximum reliability pay strict attention to the oil and fuel mixing instructions on the 2 cycle oil container Using improperly mixed fu...

Page 9: ...rmally 2 to 5 pulls NOTE Squeeze the throttle control until the engine has started and warmed up 6 Place the choke lever in the PARTIAL choke position B See Figure 8 NOTE The unit will not run in the...

Page 10: ...Line Length The Bump Head cutting attachment allows you to release trimming line without stopping the engine To release more line lightly tap the cutting attachment on the ground while operating the t...

Page 11: ...0 mm by working from top to bottom in small increments to avoid premature line wear or engine drag Cut from left to right whenever possible Cutting to the right improves the unit s cutting efficiency...

Page 12: ...e idle speed adjuster Refer to MAINTAINING YOUR TRIMMER in Section 6 Adjusting Idle Speed WARNING This unit will need to be running during idle speed adjustment Wear protective clothing and observe al...

Page 13: ...e 15 4 Wash the filter in detergent and water Rinse the filter thoroughly Squeeze out excess water Allow it to dry completely 5 Apply enough clean SAE 30 oil to lightly coat the filter See Figure 16 6...

Page 14: ...12 3 13 5 N m Do not over tighten 0 020 inch 0 5 mm Line Installation This section covers both SplitLine and standard single line installation Always use manufacturer s 0 080 inch 2 03 mm replacement...

Page 15: ...e See Figure 23 Proceed to step 11 SplitLine Installation 8 Take approximately 12 feet 3 65 m of new trim ming line Insert one end of the line through one of the two holes in the inner reel Pull the l...

Page 16: ...ert the ends of the line through the eyelets in the outer spool and place inner reel with spring inside the outer spool See Figure 26 Push the inner reel and outer spool together While holding the inn...

Page 17: ...lled Not enough line is exposed Turn the On Off Stop Control to START Fill fuel tank Press primer bulb fully and slowly 5 7 times Use starting procedure with choke control in the RUN position Drain fu...

Page 18: ...18 SECTION 9 PARTS LIST FOR MODEL 41AD 280G000 42 1 2 3 8 10 12 3 4 5 7 6 11 13 15 16 47 48 43 14 22 49 20 17 18 19 21 26 27 28 31 32 30 33 34 36 37 38 35 25 32 39 40 46 41 44 42 45 24 29 23 9...

Page 19: ...Assembly 27 610303 Square Nut Drive 28 181597 Recoil Pulley Assembly 29 613102 Recoil Spring 30 611061 Rope Guide 31 181889 Pulley Retainer Assembly 32 182827 Switch Assembly includes 39 33 181079 Pul...

Page 20: ...20 MODEL 41AD 280G000 10 8 13 9 17 16 18 19 15 11 12 14 1 1 5 6 7 4 3 2...

Page 21: ...using Assembly with Spool Shaft 12 145569 Anti Rotation Screw 13 683274 Shield and Blade Assembly includes 14 14 682061 Blade Assembly 15 153619 Outer Spool and Eyelet Assembly includes 16 16 610660 R...

Page 22: ...MTD SOUTHWEST INC MTD with respect with new merchandise purchased and used in the United States its possessions and territories MTD warrants this product against defects in material and workmanship fo...

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