Yard-Man YM70SS User Manual

Operator’s Manual
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Starting
TM
2-Cycle Gasoline Trimmer
YM70SS
SAVE THESE INSTRUCTIONS
For service call 1-800-800-7310 in the United States, or
1-800-668-1238 in Canada to obtain a list of authorized
service dealers near you. For more details about your unit, visit
our website at www.yardman.com.
DO NOT RETURN THE UNIT TO THE RETAILER. PROOF
OF PURCHASE WILL BE REQUIRED FOR WARRANTY
SERVICE.
THIS PRODUCT IS COVERED BY ONE OR MORE U.S.
PATENTS. OTHER PATENTS PENDING.
Service on this unit both within and after the warranty period
should be performed only by an authorized and approved
service dealer.
All information, illustrations, and specifications in this manual
are based on the latest product information available at the
time of printing. We reserve the right to make changes at any
time without notice.
Copyright© 2007 MTD SOUTHWEST INC, All Rights Reserved.
WARNING: When using the unit, you must follow
the safety rules. Please read these instructions
before operating the unit in order to ensure the
safety of the operator and any bystanders. Please
keep these instructions for later use.
SPARK ARRESTOR NOTE
NOTE: For users on U.S. Forest Land and in the states of
California, Maine, Oregon and Washington. All U.S. Forest
Land and the state of California (Public Resources Codes 4442
and 4443), Oregon and Washington require, by law that certain
internal combustion engines operated on forest brush and/or
grass-covered areas be equipped with a spark arrestor,
maintained in effective working order, or the engine be
constructed, equipped and maintained for the prevention of
fire. Check with your state or local authorities for regulations
pertaining to these requirements. Failure to follow these
requirements could subject you to liability or a fine. This unit is
factory equipped with a spark arrestor. If it requires
replacement, ask your LOCAL SERVICE DEALER to install the
Accessory Part #753-05169 Spark Arrestor Kit.
CALIFORNIA PROPOSITION 65 WARNING
P/N 769-02908 (01/07)
TABLE OF CONTENTS
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . . . . . . .2
Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Starting/Stopping Instructions . . . . . . . . . . . . . . . . . . . . . .7
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Maintenance and Repair Instructions . . . . . . . . . . . . . . . .9
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E18
WARNING
THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO
CAUSE CANCER, BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.

Yard-Man YM70SS Specifications

General

Type	String Trimmer
Power Source	Gasoline
Engine Type	2-Cycle
Shaft Type	Straight
Cutting System	Dual-Line

Summary

Service Information

Rules for Safe Operation

Important Safety Instructions

Key safety guidelines to follow before operating the unit.

Safety Warnings for Gas Units

Precautions for handling gasoline and fueling the unit safely.

While Operating

Guidelines for safe operation of the trimmer while it is running.

After Use

Procedures for safe shutdown and basic post-operation care.

Other Safety Warnings

Additional general safety advice for storage and use.

Oil and Fuel Information

Safety and International Symbols

Explanation of symbols used in the manual and on the product.

Oil and Fuel Mixing Instructions

Detailed guidance on mixing fuel and oil for the 2-cycle engine.

Know Your Unit

Applications

Describes the various uses and tasks the trimmer can perform.

Assembly Instructions

Installing and Adjusting the D-Handle

Steps for attaching and positioning the D-handle for optimal grip.

Installing the Cutting Attachment Shield

Instructions for securely fitting the protective cutting attachment shield.

Starting/Stopping Instructions

Starting Instructions

Step-by-step guide on how to safely start the trimmer engine.

Stopping Instructions

Procedures for safely shutting down the trimmer engine.

Operating Instructions

Holding the Trimmer

Proper technique for holding and operating the trimmer.

Adjusting Trimming Line Length

How to extend the trimmer line using the bump head mechanism.

Decorative Trimming

Techniques for precise trimming around decorative elements.

Tips for Best Trimming Results

Advice for efficient and effective grass cutting and trimming.

Maintenance & Repair Instructions

Maintenance Schedule

A table outlining required maintenance tasks and their frequency.

Line Installation

Instructions for replacing or installing trimmer line.

Single Line Installation

Specific steps for installing single trimming line.

SplitLine™™ Installation

Steps for installing the SplitLine™™ trimming line.

Installing a Prewound Reel

Guidance on installing a pre-wound line reel assembly.

Air Filter Maintenance

Procedures for removing, cleaning, and maintaining the air filter.

Reinstalling the Air Filter/Muffler Cover

Steps to correctly reattach the air filter and muffler cover.

Spark Arrestor Maintenance

Instructions for inspecting and cleaning the spark arrestor system.

Cleaning the Air Filter

Detailed steps for washing and drying the air filter.

Carburetor Adjustment

Information on adjusting the engine's idle speed and carburetor.

Check Fuel Mixture

Guidance on verifying the correct fuel and oil mixture.

Clean Air Filter

Importance of air filter condition for engine performance.

Adjust Idle Speed Screw

Procedure for adjusting the idle speed screw for smooth idling.

Replacing the Spark Plug

Instructions for spark plug replacement and gap setting.

Transporting

Safety precautions for transporting the trimmer.

Cleaning

General instructions for cleaning the exterior of the unit.

Storage

Guidelines for safe and proper storage of the trimmer.

Long Term Storage

Procedure for storing the unit for extended periods.

Cleaning and Storage

Specifications

Engine

Technical specifications for the engine, including type, displacement, and RPM.

Drive Shaft & Cutting Attachment

Specifications for the drive shaft, cutting mechanism, and line details.

Warranty Information