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Yard Machines Y25 - User Manual

Yard Machines Y25
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PART NO. 769-05370 P00 (12/09)
Insert 10' of 0.080"SplitLine
®
through
hole in top of reel. Pull most of line
through hole until 3"-4" remains.
Wind line tightly in direction of arrow.
Split other end of SplitLine
®
back 6"-7".
Push 6"-7" ends into
0.080" holding slots.
Insert or slide lines into the
eyelets in spool. Insert spring
and reel into spool.
Pull lines firmly to release
from holding slots.
Bend short end and push it
into the other hole. Pull tight.
Bump
Knob
Inner
Reel
Spool
Spring
Press primer bulb 10 times.
Put blue choke lever
in Position 1.
Move blue choke
lever to Position 2.
While continuing to
squeeze the throttle
control, move the blue
choke lever to Position 3.
SQUEEZE and HOLD throttle
control for ALL further steps.
Pull the rope
5 times.
Pull the rope 3 to 5
times to start. Run
engine for 30-60
seconds to warm up.
Continue warming for an
additional 60 seconds.
During this time the unit
may be used.
Crouch in starting
position.
DIDN’T START?
Repeat these instructions.
If engine still fails to start, refer
to the Starting/ Stopping
instructions section of this
manual for additional starting
and troubleshooting information.
Quick Instructions to
Replace SplitLine
®
Trimmer Line
Replacement SplitLine
®
Part #49U0134K953
For single line installation,
refer to Line Installation
section of this manual.
For replacement spool
installation, refer to Installing a
Prewound Reel section of this manual.
Quick Instructions
to Start Engine
For complete instructions, refer to
Starting/ Stopping Instructions section
of this manual.
Quick Instructions to
Assemble Trimmers
For complete instructions, refer to the
Assembly Instructions section of this
manual.
Unscrew bump knob
counterclockwise. Remove
inner reel and spring.
5 X
3
"
-4
"
Hold the inner reel in place.
Tighten Bump Knob
clockwise.
IMPORTANT: READ OPERATOR’S MANUAL THOROUGHLY AND FOLLOW THE SAFE OPERATION PRACTICES BEFORE OPERATING THE UNIT.
1 Gallon 3.2 oz
40:1
Put D-handle on shaft. Move handle a
minimum 6 inches away from shaft grip.
Insert clamp bolt and tighten the wing nut.
Mix thoroughly in a separate fuel can:
– 3.2 fl. oz. of 2-cycle engine oil
– 1 gallon of unleaded gasoline
Place the unit on a level surface. Fill fuel tank.
NOTE: Do not mix directly in the fuel tank.
Read and understand all instruction, warning and danger labels on the unit.
Min. 6"
Bolt
Slide the slot in the cutting attachment shield onto
the guard mounting bracket and rotate it onto the
shaft. Push the square bolt through the shield and
bracket and thread it with the washer and wing nut.
Guard Mounting
Bracket
Wing
Nut
Washer
Español — Page 9 English — Page 2Français — Page 5
Operator’s Manual
DO NOT RETURN THIS PRODUCT
For Assistance, please call 1-800-800-7310 (U.S.) or 1-800-668-1238 (Canada)
or visit www.mtdproducts.com or www.mtdproducts.ca
NEED HELP? CALL 1–800-800-7310 IN U.S. OR 1–800–668–1238 IN CANADA
Y25
2-Cycle Trimmer

Questions and Answers

  • F
    frenchcoreyJul 31, 2025
    Why does my Yard Machines Y25 Trimmer engine lack power or stall?
    • C
      Carl FranklinJul 31, 2025
      Your Yard Machines Trimmer might lack power or stall due to old or improperly mixed fuel; in this case, drain the fuel tank and add a fresh fuel mixture. Another possible reason is a fouled spark plug, which should be replaced or cleaned.
  • S
    Sarah MonroeAug 5, 2025
    What to do if my Yard Machines Y25 engine will not accelerate?
    • A
      alexandraberryAug 5, 2025
      If your Yard Machines Trimmer engine won't accelerate, the issue could be due to several reasons. Old or improperly mixed fuel is a common culprit, so drain the fuel tank and add a fresh fuel mixture. Also, the cutting head might be bound with grass; if so, stop the engine and clean the cutting head. Finally, check the air filter; a dirty air filter should be cleaned or replaced.
  • S
    Stephanie MooreAug 12, 2025
    Why my Yard Machines Y25 Trimmer engine will not idle?
    • K
      Krista JensenAug 12, 2025
      If your Yard Machines Trimmer engine won't idle, it could be due to a plugged air filter, which you should replace or clean. Another cause might be old or improperly mixed fuel, so drain the fuel tank and add a fresh fuel mixture. Finally, the carburetor adjustment might be improper; in that case, adjust it according to the Carburetor Adjustments section.
  • K
    kellybrianAug 18, 2025
    How to fix a Yard Machines Y25 cutting head that will not advance line?
    • S
      Sharon ZavalaAug 18, 2025
      If the cutting head on your Yard Machines Trimmer won't advance the line, try these steps: * Stop the engine and clean the cutting head if it's bound with grass. * Refill with a new line if the cutting head is out of line. * Rewind the inner reel if it's bound up. * Clean the inner reel and outer spool if the cutting head is dirty. * Disassemble, remove any welded sections, and rewind if the line is welded. * Disassemble and rewind the line if it was twisted when refilled. * Push the bump knob and pull out the line until 4 inches (102 mm) of line extends outside the cutting head if not enough line is exposed.
  • R
    Rachel ReynoldsAug 25, 2025
    What causes a Yard Machines Trimmer cutting line to advance uncontrollably?
    • M
      Michael GrantAug 25, 2025
      If the cutting line on your Yard Machines Trimmer advances uncontrollably, it is probably due to oil, cleaner, or lubricant in the cutting head. Clean and thoroughly dry the cutting head to resolve this issue.

Summary

Quick Instructions to Assemble Trimmers

Quick Instructions to Start Engine

Quick Instructions to Replace SplitLine Trimmer Line

Service Information

Starting;Stopping Instructions

Guidance on how to start and stop the trimmer engine.

Troubleshooting Chart

A guide to diagnosing and fixing common issues.

Rules for Safe Operation

Safety and International Symbols

Explanation of safety symbols, warnings, and their meanings.

Wear Eye and Hearing Protection

Warning to wear protective gear against thrown objects and noise.

Do Not Use E85 Fuel

Warning against using E85 fuel due to potential engine damage.

Thrown Objects and Rotating Cutter

Warning about severe injury from thrown objects and rotating parts.

California Proposition 65 Warning

Know Your Unit

Starting;Stopping Instructions

Starting Instructions

Step-by-step guide for starting the trimmer engine.

Stopping Instructions

Procedure for safely shutting down the trimmer.

Operating Instructions

Maintenance and Repair Instructions

Line Installation

Troubleshooting

Engine Will Not Start

Solutions for when the engine fails to start.

Engine Will Not Accelerate

Troubleshooting steps for engine acceleration issues.

Engine Lacks Power or Stalls

Diagnosing and fixing power loss or stalling.

Yard Machines Y25 Specifications

General IconGeneral
Engine Type2-cycle
Engine Displacement25 cc
Cutting Width17 inches
Line Diameter0.095 inches
Cutting Swath17 inches
Starting SystemManual recoil

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