Assembly Instructions; Know Your Unit - MTD Yard Machines Y780 Operator's Manual

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 fuel can severely
damage the engine.
WARNING:
Remove fuel cap slowly to avoid injury
from fuel spray. Never operate the unit without the
fuel cap securely in place.
WARNING:
Add fuel in a clean, well ventilated
outdoor area. Wipe up any spilled fuel immediately.
Avoid creating a source of ignition for spilt fuel. Do
not start the engine until fuel vapors dissipate.
Using Fuel Additives
The bottle of 2-cycle oil
that came with your unit
contains a fuel additive
which will help inhibit
corrosion and minimize the
formation of gum deposits.
It is recom-mended that
you use our 2-cycle oil with
this unit.
If unavailable, use a good
2-cycle oil designed for
air-cooled engines along with a fuel additive, such as STA-BIL
Gas Stabilizer or an equivalent. Add 0.8 oz. (23 ml.) of fuel additive
per gallon of fuel according to the instructions on the container.
NEVER add fuel additives directly to the unit's fuel tank.
NOTE: Dispose of the old fuel/oil mix in accordance to
Federal, State and Local regulations.
Definition of Blended Fuels
Today's fuels are often a blend of gasoline and oxygenates
such as ethanol, methanol, or MTBE (ether). Alcohol-blended
fuel absorbs water. As little as 1% water in the fuel can make
fuel and oil separate and leads to formation of acids during
storage. When using alcohol-blended fuel, use fresh fuel.
INSTALL AND ADJUST THE HANDLEBAR
1. Place the bull-horn handle between the top and middle
clamp pieces (Fig. 1).
(4) Screws
Middle Clamp
Nuts
2. While holding the three pieces together, install the four (4)
screws through the top clamp and into middle clamp.
OIL AND FUEL INFORMATION
+
UNLEADED GAS 2-CYCLE OIL
UNLEADED GAS 2 CYCLE OIL
1 GALLON US 3.2 FL. OZ.
(3.8 LITERS) (95 ml)
1 LITER 25 ml
MIXING RATIO - 40:1

ASSEMBLY INSTRUCTIONS

Top
Clamp
Bottom
Clamp
Fig. 1
Using Blended Fuels
If you choose to use a blended fuel, or its use is unavoidable,
follow recommended precautions:
• Always use the fresh fuel mix explained in the operator's manual
• Always shake the fuel mix before fueling the unit
• Drain the tank and run the engine dry before storing the unit
Applications
As a trimmer, cutting grass and light weeds, and decorative
trimming around trees, fences, etc.
As a brushcutter, cutting weeds and light bush of up to 13 mm
(1/2 inch) in diameter
Throttle
Control
Bull Horn
Handlebar
Cutting
Blade
®
Shaft
Housing
Cutting
Attachment
NOTE: The holes in the top and
middle clamp will line up only
when assembled correctly.
3. Place the clamps and the
handlebar over the shaft housing
and onto the bottom clamp.
4. Hold each hex nut in the
bottom clamp recess with a
finger. Start screws with a
large Phillips screwdriver. Do
not tighten until you make the
handle adjustment.
5. While holding the unit in the
operating position (Fig. 2),
move the handlebar to the
location that provides you the
best grip.
6. Tighten the clamp screws evenly, until the handlebar is secure.
4

KNOW YOUR UNIT

Starter Rope Grip
On/Off Stop
Control
Throttle
Lock-Out
Shaft
Grip
Fuel
Cap
Cutting
Attachment
Shield
Primer
Line
Bulb
Cutting
Blade
Fig. 2
Muffler
Spark
Plug
Foot
Stand
Blue
Choke
Lever
Air Filter/
Muffler
Cover