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MTD YARD-MAN YM71SS - User Manual

MTD YARD-MAN YM71SS
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IMPORTANT: READ THE OPERATOR’S MANUAL THOROUGHLY AND FOLLOW THE SAFE OPERATION PRACTICES WHILE OPERATING THE UNIT.
Removing Unit From Carton
Place shield onto mount
bracket. Securely screw 2 shield
s
crews through holes on mount
bracket and into shield. Make
sure screws are tightened equally
so there is an equal gap between
b
racket and shield on each side.
Assemble The Unit
11 2
R
emove all contents from
the carton.
Starter Rope
Fuel Cap
Throttle Control
On/ Off Switch
D-Handle
Ez-Link™
C
utting Head Shield
N
eed Help?
Call 1-800-800-7310
DIDN’T START?
Repeat these instructions.
IF engine fails to start after 2 attempts,
move choke lever to position 3 and pull
the starter rope until engine starts
IF unit still fails to start, refer to the
operator’s manual for additional starting
and troubleshooting information
Assembly Tools Required:
Phillips #2 Screwdriver
Assemble The Unit
Starting The Unit
Remove cap from lower
boom. Push cutting
a
ttachment into coupler.
Turn coupler knob clockwise
to tighten.
Mix thoroughly in separate
fuel can:
3.2 fl. oz. of 2-cycle
engine oil
1 gallon of unleaded
gasoline
NOTE: Do not mix directly in
fuel tank.
P
lace unit on a level surface.
Fill fuel tank.
P
ress primer bulb 10 times,
or until fuel is visible
Crouch in starting position. SQUEEZE and HOLD
throttle for ALL further
steps.
Pull rope 5 times. Move choke lever to
Position 2 and squeeze
throttle.
Pull rope 3-5 times to start
engine. Run unit for 30-60
seconds to warm up.
Continue to squeeze
throttle. Move choke lever
to Position 3.
11 2
Remove all contents from
carton.
5 6 7
19 10
3
Put D-handle on shaft. Move
handle a minimum 6 inches
a
way from shaft grip. Insert
clamp bolt and tighten the
wing nut.
M
ove choke lever to
Position 1.
Continue to squeeze
throttle. Run unit for an
additional 60 seconds to
complete warm-up. Unit
may be used during this
time.
8
4
Starting The Unit
11
12
13
14
15
P
rimer
B
ulb
1
0 X
5 X
3-5 X
C
hoke Lever
1 Gallon 3.2 oz
4
0:1
Choke Lever
Choke Lever
Min. 6"
Bump
Knob
Inner
Reel
Outer
Spool
Spring
Top Hole
Bottom Hole
Split Wall
Unscrew the bump knob
counterclockwise.
Remove the inner reel and
spring.
Cut one 6-foot (1.8 m) length
of new 0.095” split line
trimming line. Split each end
about 6 inches (150 mm).
Insert the end of one line into
the top hole and the end of
the other line into the bottom
hole.
Wind the line tightly in the
direction shown on the inner
reel. The split wall will divide
the line. Wind the line until it
is completely divided and
about 6 inches (150 mm) of
line remains.
Insert the two 6-inch sections
into the two .095 holding
slots.
11 2
Pass the two line ends
through the eyelets. Place the
spring inside the inner reel.
Insert the inner reel into the
outer spool. Push the inner
reel and outer spool together.
Reloading the Line*
3
4
5
6
7
Hold the inner reel and outer
spool together. Firmly pull the
two line ends to release them
from the holding slots. Screw
the bump knob on clockwise.
Tighten the bump knob
securely.
18
For replacement line, call 1–800-800-7310 or go to
an authorized service dealer.
For single line installation or replacement spool
installation instructions, refer to the Replacing the
Trimming Line section of this manual.
*This is to assist in the reloading of Splitline® only. These instructions
are NOT part of the fast assembly instructions. Line does not need to
be installed on the initial assembly and start-up.
Reloading the Line
Holding Slots
Eyelets
769-07513 P00 11/11
NEED HELP? CALL 1-800-800-7310 IN U.S. OR 1–800–668–1238 IN CANADA
YM71SS
2-Cycle Trimmer
Operator’s Manual
Español — Page 11
English — Page 1
Français — Page 6

Questions and Answers

  • W
    Wayne FrancisAug 4, 2025
    How to fix MTD YARD-MAN YM71SS Trimmer if engine will not start?
    • W
      wstewartAug 5, 2025
      If your MTD Trimmer engine won't start, several factors could be the culprit. First, ensure the fuel tank isn't empty; if it is, fill it with properly mixed fuel. Another reason might be insufficient priming; try pressing the primer bulb 10 times or until fuel becomes visible. If the engine is flooded, move the choke lever to position 3, then squeeze the trigger and pull the starter rope. Old or improperly mixed fuel can also prevent starting, so drain the tank and add fresh fuel. Lastly, a fouled spark plug could be the issue; in this case, replace or clean the spark plug.
  • R
    robertcoxAug 10, 2025
    Why does my MTD YARD-MAN YM71SS Trimmer engine lack power or stalls?
    • M
      Marc EvansAug 10, 2025
      If your MTD Trimmer engine lacks power or stalls, it could be due to old or improperly mixed fuel. In this case, drain the fuel tank and add fresh, properly mixed fuel. Another potential cause is a fouled spark plug, which would require you to replace or clean the spark plug.
  • H
    Hannah WilliamsAug 14, 2025
    What to do if my MTD Trimmer engine will not accelerate?
    • E
      erin84Aug 15, 2025
      If your MTD Trimmer engine will not accelerate, the issue might be old or improperly mixed fuel. Try draining the fuel tank and adding fresh, properly mixed fuel. Another cause could be a cutting head bound with grass; if so, stop the engine and clean the cutting head. A dirty air filter can also prevent acceleration, so clean or replace it.
  • F
    fritzdanielAug 20, 2025
    How to fix MTD YARD-MAN YM71SS Trimmer if engine will not idle?
    • T
      Tara AriasAug 20, 2025
      If your MTD Trimmer engine won't idle, there are a few potential causes. A plugged air filter could be the problem; try replacing or cleaning it. Old or improperly mixed fuel can also cause idling issues, so drain the fuel tank and add fresh, properly mixed fuel. Lastly, the idle speed might be improper; in this case, adjust the idle speed.
  • J
    Jason HayesAug 25, 2025
    Why MTD YARD-MAN YM71SS Trimmer cutting head will not advance line?
    • C
      Caroline DavisAug 26, 2025
      If the MTD Trimmer cutting head will not advance line, there might be several reasons: * The cutting head is bound with grass, so stop the engine and clean it. * The cutting head is out of line, so refill it with a new line. * The inner reel is bound up, so clean the inner reel and outer spool. * The cutting head is dirty, so disassemble, remove the welded section, and rewind. * The line is welded, so disassemble and rewind the line. * The line twisted when refilled, so push the bump knob and pull out the line until 4 inches (102 mm) of line is outside of the cutting head. * Not enough line is exposed, so clean and thoroughly dry the cutting head.
  • B
    Brandy SmithAug 30, 2025
    Why MTD YARD-MAN YM71SS cutting line advances uncontrollably?
    • A
      Andrea ThomasAug 30, 2025
      If the cutting line on your MTD Trimmer advances uncontrollably, the issue might be oil, cleaner, or lubricant in the cutting head. To resolve this, clean and thoroughly dry the cutting head.

Summary

YARD-MAN YM71 SS Trimmer Quick Start

Assembly Guide

Steps to assemble the trimmer unit from its packaging.

Starting Procedure

Instructions for mixing fuel and starting the trimmer engine.

Reloading Trimmer Line

Guide for reloading the trimmer line onto the spool.

Manual Overview and Safety

Service Information

Contact information for customer support and service dealers.

Know Your Unit

Identification of trimmer components and their functions.

Rules for Safe Operation

Critical safety precautions for operating the trimmer.

Safety and International Symbols

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

Unit Setup and Initial Operation

Unit Applications and Tools

Details on trimmer applications and the tools needed for assembly.

Assembly Instructions

Steps for installing shield, handle, and EZ-Link system.

Oil and Fuel Mixing

Proper procedures for mixing fuel and oil and fueling the unit.

Starting and Stopping the Engine

Step-by-step guide for starting and stopping the trimmer.

Operating and Maintenance Procedures

Operating the Trimmer

Guidance on holding, trimming, adjusting line length, and decorative trimming.

Maintenance Schedule and Tasks

Recommended maintenance frequency and procedures.

Replacing Trimming Line

Detailed instructions for replacing the trimmer line.

Air Filter and Idle Speed

Procedures for air filter cleaning and idle speed adjustment.

Troubleshooting, Specifications, and Storage

Spark Plug Replacement

Instructions for removing, checking, and replacing the spark plug.

Cleaning and Storage

Methods for cleaning and storing the trimmer.

Troubleshooting Engine Problems

Common engine issues and their solutions.

Technical Specifications

Key specifications and measurements for the trimmer.

Manufacturers Limited Warranty

Obtaining Warranty Service

How to get service and find authorized dealers.

MTD YARD-MAN YM71SS Specifications

General IconGeneral
BrandMTD
ModelYARD-MAN YM71SS
CategoryTrimmer
LanguageEnglish

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