Gasoline Engine
Operator’s Manual
Save This Manual for Future Reference
MODEL NUMBER
154FS-1
SERIAL NUMBER
PURCHASE DATE
Both model number and serial
number may be found on the
main label. You should record
both of them in a safe place for
future use.
READ AND UNDERSTAND THE ENTIRE MANUAL BEFORE OPERATING MACHINE
FOR YOUR SAFETY
TM
Tame the Great Outdoors
Your new YARDMAX™ engine offers quality construction
that is easy and safe to operate. With proper use and
care, it is designed to give you many years of dependable
service.
Prepare to experience the durability to take on any job
with the ease, portability, and convenience of your new
engine!
Discover the YARDMAX Advantage
At YARDMAX, we understand that land ownership
definitely has its privileges, but it also comes with a
great deal of responsibility. When duty calls and you
need to respond, will you have what it takes to tame the
great outdoors?
MAX Performance, MAX Value, MAX Support —
that’s YARDMAX
Backed by decades of proven manufacturing expertise
√
Enhanced design features come standard
√
Engineered for the best user experience
√
Quality metal parts are used instead of plastic
√
A robust warranty supports all products
√
Budget-friendly prices make it practical
√
When looking for outdoor power equipment (OPE) to get
the job done right, at the right price, YARDMAX delivers
the perfect combination of performance and practicality.
YARDMAX has a solution that’s right for you.
TABLE OF CONTENTS
Introduction 1
Specications 3
Up for the job? YARDMAX is.
Operation 7
Maintenance 9
Safety 3
Know Your Engine 4
Controls 5
Check before Operation 6
1
Introduction
|
Storage 12
Technical & Consumer Information 13
Wiring Diagram 14
Gasoline Engine
»
Operator’s Manual
DISCLAIMER
Keep this owner's manual handy, so you can refer to it at
any time.
This owner's manual is considered a permanent part of
the engine and should remain with the engine if resold.
The information and specifications included in this
publication were in effect at the time of approval for
printing.
READ THIS OWNER’S MANUAL CAREFULLY. Pay special
attention to these symbols and any instructions that follow:
Warning!
Indicates serious injury or death will result if
instructions are not followed.
Danger!
Indicates a strong possibility that serious injury or
death could result if instructions are not followed.
Coution!
Indicates a possibility that minor injury or an result if
instructions are not followed.
Notice:
Indicates that equipment or property damage can
result if instructions are not followed.
ENGINE SERIAL NUMBER
Record the engine serial number on the front cover of this
manual. You will need this serial number when ordering
parts, and when making technical or warranty inquires.
ENGINE TYPE
SERIAL NUMBER
DISCLAIMER
YARDMAX reserves the right to discontinue, change,
and improve its products at any time without notice
or obligation to the purchaser. The descriptions and
specications contained in this manual were in effect at
printing. Equipment described within this manual may be
optional. Some illustrations may not be applicable to your
unit.
SUPPORT
All tools, hoses and packaging should be taken to the local
recycling center and disposed of in an environmentally
safe way.
Carefully read through this entire operator’s manual
before using your new engine. Pay attention to all
cautions and warnings.
ENVIRONMENTAL
Recycle unwanted materials instead of disposing of
them as waste. All tools, hoses, and packaging should
be taken to the local recycling center and disposed of
in an environmentally safe way.
Have questions about your YARDMAX equipment?
Call us at 844-YARDMAX, email us at
support@yardmax.com, or contact us via your
favorite social media site.
Introduction
2
|
SPECIFICATIONS
Model 154FS-1
Type 0.028" ~ 0.031"
Rated power
(kW/3600rpm)*
1.65Kw/3600rpm
Max torque N•m/rpm 4.5N.m/3800rpm
Fuel consumption ratio
(g/kW•h)
≤450
Speed uctuating ratio ≤10%
Noise ≤ dB(A) 70
Bore×Stroke (mm) 54×38
Displacement (cc) 87
Compression ratio 8.5:1
Staring mode Recoil start
Rotation
Valve clearance (mm)
Anti-clockwise
(from P.T.O.Side)
Intake valve 0.10-0.15
Exhaust valve 0.15-0.20
Spark plug gap (mm) 0.7~0.8
Ignition mode Transistorized magneto ignition
Air cleaner no element
Length 344
Dimension
(mm)
Width 316
Height 327
Net weight (kg) 12.5
Lubricating mode Splash
* The power rating of the engine indicated in this document is the net power output tested on a production engine for the engine model
and measured in accordance with SAE J1349 at 3,600 rpm (Net Power) and at 3,800 rpm (Max. Net Torque). Mass production engines
may vary from this value.
* Actual power output for the engine installed in the nal machine will vary depending on numerous factors, including the operating speed
of the engine in application, environmental conditions, maintenance, and other variables.
IMPORTANT SAFETY INFORMATION
Most accidents with engines can be prevented if you follow all
instructions in this manual and on the engine. Some of the most
common hazards are discussed below, along with the best way to
protect yourself and others.
OWNER RESPONSIBILITIES
The engines are designed to give safe and dependable service if
operated according to instructions. Read and understand this
owner’s manual before operating the engine. Failure to do so
could result in personal injury or equipment damage.
Know how to stop the engine quickly, and understand the
operation of all controls. Never permit anyone to operate the
engine without proper instructions.
3
Specications & Safty
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SAFETY
REFUEL WITH CARE
Gasoline is extremely ammable, and gasoline vapor can explode.
Refuel outdoors, in a well-ventilated area, with the engine stopped.
Never smoke near gasoline, and keep other ames and sparks away.
Always store gasoline in an approved container. If any fuel is spilled,
make sure the area is dry before starting the engine.
HOT EXHAUST
Do not allow children to operate the engine. Keep children and
pets far away from the area of operation.
The mufer becomes very hot during operation and remains
hot for a while after stopping the engine. Be careful not to
touch the mufer while it is hot. Let the engine cool before
storing it indoors.
Gasoline Engine
»
Operator’s Manual
To prevent re hazards and to provide adequate ventilation for
stationary equipment applications, keep the engine at least 3
feet (1 meter) away from building walls and other equipment
during operation. Do not place ammable objects close to the
engine.
CARBON MONOXIDE HAZARD
Exhaust gas contains poisonous carbon monoxide. Avoid
KNOW YOUR ENGINE
FEATURES AND CONTROLS
Fuel Shutoff Valve
Spark Plug
inhalation of exhaust gas. Never run the engine in a closed garage
or conned area.
OTHER EQUIPMENT
Review the instructions provided with the equipment powered
by this engine for any additional safety precautions that should
be observed in conjunction with engine startup, shutdown,
operation, or protective apparel that may be needed to operate
the equipment.
Fuel Filler Cap
Mufer
Cylinder Head Cover
Choke Control
Priming pump
Air Box
Ignition Switch
Oil Drain Plug
Oil Dipstick
Fuel Tank
Throttle Control
Starter Grip
Know your Engine
4
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