Toro 51947 User manual

25.4 cc Gas Power Head
Model No. 51947—313000001 & Up
English (EN), French (FR), and Spanish (ES)
WARNING:
To reduce the risk of injury, the user must read and understand the operator’s manual. Save this manual.
Form No. 3376-833 Rev. A
If you have questions concerning
your trimmer, please call us
at 1-866-574-9242 (US) or
1-866-574-9243 (Canada).
NOTICE
Do not use E15, E20, or E85 fuel (or fuel
containing greater than 10% ethanol) in
this product. It is a violation of federal law
and will damage the unit and void your
warranty.

2
READ THIS INFORMATION
Before you use your new trimmer, read the following helpful hints to
get you started.
Fueling
WARNING:
Gasoline and its vapors are highly ammable and
explosive. To prevent serious personal injury and
property damage, handle it with care. Keep away
from ignition sources and open ames, handle
outdoors only, do not smoke and wipe up spills
immediately.
1. Obtain a clean container that is approved for use with gasoline.
2. Mix all of the 2-cycle oil provided with 1 US gallon of 87-octane, unleaded gasoline (50:1).
3. Fill the trimmer’s gas tank carefully.
Cold Starting vs. Warm Starting
When you restart the trimmer and you are not sure whether the engine is still warm, set the choke
lever to RUN and pull the starter cord. If the engine does not start within 5 pulls, refer to “To Start a
Cold Engine” later in this manual.
Flooded Engine
Will the engine start? If not, it may be ooded. Relax, this is easy to correct. Set the choke lever to
RUN. Squeeze the trigger and pull the starter cord quickly for 10 to 12 pulls.
If the engine does not start, refer to “Troubleshooting” later in this manual or call toll-free at
1-866-574-9242 (US) or 1-866-574-9243 (Canada).
CALL
1-866-574-9242 (US) or
1-866-574-9243 (Canada)
For questions concerning your trimmers,
call us toll free at 1-866-574-9242 (US) or
1-866-574-9243 (Canada).
WARNING: This product, its exhaust, and other substances that may become airborne
from its use may contain chemicals, including lead, known to the State of California to cause cancer,
birth defects, or other reproductive harm. Wash hands after handling.
STOP
California Proposition 65

3
Table of Contents
Introduction...................................................................................................................................................................................4
General Safety Rules................................................................................................................................................................. 5-6
Specic Safety Rules ....................................................................................................................................................................6
Symbols.........................................................................................................................................................................................7
Product Labels ..............................................................................................................................................................................8
Features.........................................................................................................................................................................................9
Product Specications ...........................................................................................................................................................9
Assembly................................................................................................................................................................................10-11
Unpacking............................................................................................................................................................................10
Packing List .........................................................................................................................................................................10
Connecting the Attachment to the Upper Shaft ...................................................................................................................10
Removing the Attachment from the Upper Shaft ................................................................................................................11
Attaching the Front Handle .................................................................................................................................................11
Operation............................................................................................................................................................................... 12-14
Applications.........................................................................................................................................................................12
Fueling and Refueling the Power Head ...............................................................................................................................12
Oxygenated Fuels ...............................................................................................................................................................12
Operating the Power Head...................................................................................................................................................13
Blade Thrust ........................................................................................................................................................................13
Starting the Product .............................................................................................................................................................14
Stopping the Product............................................................................................................................................................14
Maintenance.......................................................................................................................................................................... 15-18
General Maintenance ...........................................................................................................................................................15
Cleaning the Product............................................................................................................................................................15
Servicing the Product...........................................................................................................................................................15
Checking the Fuel Cap, Tank, and Lines.............................................................................................................................15
Cleaning the Air Filter .........................................................................................................................................................15
Replacing the Spark Arrestor...............................................................................................................................................16
Replacing the Spark Plug.....................................................................................................................................................16
Idle Speed Adjustment.........................................................................................................................................................17
Storing the Product ..............................................................................................................................................................17
Transporting the Product .....................................................................................................................................................17
High Altitude Engine Operation ..........................................................................................................................................18
Maintenance Schedule .........................................................................................................................................................18
Troubleshooting ..........................................................................................................................................................................19
Warranty......................................................................................................................................................................................20
Table of Contents

4
Introduction
Thank you for purchasing a Toro product.
We would like for you to be completely satised with your new product, so feel free to contact an authorized service dealer
for help with service, genuine Toro parts, or other information you may require.
Whenever you contact an authorized service dealer, always know the model and serial numbers of the product. These num-
bers will help the service representative provide exact information about your specic product. You will nd the model and
serial number decal located on the motor housing.
For your convenience, write the product model and serial numbers in the space below.
Model No.
Serial No.
Read this manual carefully to learn how to operate and maintain your product correctly. Reading this manual will help you
and others avoid personal injury and damage to the product. Although Toro designs, produces, and markets safe, state-of-the-
art products, you are responsible for using the product properly and safely. You are also responsible for training persons you
allow to use the product about safe operation.
The Toro warning system in this manual identies potential hazards and has special safety messages that help you and others
avoid personal injury, even death. DANGER, WARNING, and CAUTION are signal words that identify the level of hazard.
However, regardless of the hazard, be extremely careful. Two other words, “Important” and “Note,” highlight information.
Introduction
Data Label

5
Read All Instructions
For safe operation, read and understand all instructions
before using this product. Follow all safety instructions.
Failure to follow all safety instructions listed below, can
result in serious personal injury.
Do not allow children or untrained individuals to use this
unit.
Do not start or operate the engine in a conned space,
building, near open windows, or in other unventilated
space where dangerous carbon monoxide fumes can col-
lect. Carbon monoxide, a colorless, odorless, and extreme-
ly dangerous gas, can cause unconsciousness or death.
Clear the work area before each use. Remove all objects
such as rocks, broken glass, nails, wire, or loose string
which can be thrown or become entangled in the cutting
line or blade.
Always wear eye protection with side shields marked to
comply with ANSI Z87.1 along with hearing protection
when operating this equipment.
Wear heavy, long pants, long sleeves, boots, and gloves.
Do not wear loose tting clothing, short pants, sandals,
or go barefoot. Do not wear jewelry of any kind.
Heavy protective clothing may increase operator fatigue,
which could lead to heat stroke. During weather that is
hot and humid, heavy work should be scheduled for early
morning or late afternoon hours when temperatures are
cooler.
Product users on United States Forest Service land, and
in some states, must comply with re prevention regula-
tions. This product is equipped with a spark arrestor;
however, other user requirements may apply. Check with
your federal, state, or local authorities.
Never operate this unit on the operator’s left side.
Secure long hair above shoulder level to prevent entan-
glement in moving parts.
Keep all bystanders, children, and pets at least
50 ft. (15 m) away. Bystanders should be encouraged to
wear eye protection. If you are approached, stop the en-
gine and cutting attachment. In the case of bladed units,
there is the added risk of injury to bystanders from being
struck with the moving blade in the event of a blade
thrust or other unexpected reaction of the saw.
Do not operate this unit when you are tired, ill, upset, or
under the inuence of alcohol, drugs, or medication.
Do not operate in poor lighting.
Keep rm footing and balance. Do not overreach. Over-
reaching can result in loss of balance or exposure to hot
surfaces.
Do not use on a ladder or unstable support. Stable foot-
ing on a solid surface enables better control of the unit in
unexpected situations.
Keep all parts of your body away from any moving part.
To avoid hot surfaces, never operate the unit with the
bottom of the engine above waist level.
Do not touch area around the mufer or cylinder of the
unit, these parts get hot from operation. Contact with hot
surfaces could result in possible serious personal injury.
Always stop the engine and remove the spark plug wire
before making any adjustments or repairs except for
carburetor adjustments.
Inspect the unit before each use for loose fasteners, fuel
leaks, etc. Replace any damaged parts before use.
 Never use blades, ailing devices, wire, or rope on trim-
mer attachment. Never use ailing devices, wire, or rope
on any attachment.
The cutting attachment should never rotate at idle during
normal use. The cutting attachment may rotate at idle
during carburetor adjustments.
 It has been reported that vibrations from hand-held
tools may contribute to a condition called Raynaud’s
Syndrome in certain individuals. Symptoms may include
tingling, numbness, and blanching of the ngers, usu-
ally apparent upon exposure to cold. Hereditary factors,
exposure to cold and dampness, diet, smoking, and work
practices are all thought to contribute to the development
of these symptoms. It is presently unknown what, if any,
vibrations or extent of exposure may contribute to the
condition. There are measures that can be taken by the
operator to possibly reduce the effects of vibration:
a) Keep your body warm in cold weather. When operat-
ing the unit wear gloves to keep hands and wrists
warm. It is reported that cold weather is a major fac-
tor contributing to Raynaud’s Syndrome.
b) After each period of operation, exercise to increase
blood circulation.
c) Take frequent work breaks. Limit the amount of
exposure per day.
d) Keep the tool well maintained, fasteners tightened,
and worn parts replaced.
If you experience any of the symptoms of this condi-
tion, immediately discontinue use and see your physician
about these symptoms.
Mix and store fuel in a container approved for gasoline.
Mix fuel outdoors where there are no sparks or ames.
Wipe up any fuel spillage. Move 30 ft. (9 m) away from
refueling site before starting engine. Slowly remove the fuel
cap after stopping engine. Do not smoke when refueling.
Safety Rules
General Safety Rules
WARNING:
Read and understand all instructions. Failure to follow all instructions may result in electric shock, re
and/or serious personal injury.