Cub Cadet ST4125 Operator's Manual page 2

RULES FOR SAFE OPERATION
• Store the unit in a dry area, locked up or up high to prevent unauthorized use or damage, out of the reach
of children.
• Never douse or squirt the unit with water or any other liquid. Keep handles dry, clean and free from
debris. Clean after each use, see Cleaning and Storage instructions.
• Keep these instructions. Refer to them often and use them to instruct other users. If you loan someone
this unit, also loan them these instructions.
SAVE THESE INSTRUCTIONS
• SAFETY AND INTERNATIONAL SYMBOLS •
This operator's manual describes safety and international symbols and pictographs that may appear on this product.
Read the operator's manual for complete safety, assembly, operating, maintenance, and repair information.
SYMBOL MEANING
• SAFETY ALERT SYMBOL
Indicates danger, warning or caution. May be used in conjunction with other symbols
or pictographs.
• READ OPERATOR'S MANUAL
WARNING:
Read the operator's manual(s) and follow all warnings and safety
instructions. Failure to do so can result in serious injury to the operator and/or bystanders.
• WEAR EYE AND HEARING PROTECTION
WARNING:
Thrown objects and loud noise can cause severe eye injury and hearing
loss. Wear eye protection meeting ANSI Z87.1-1989 standards and ear protection
when operating this unit. Use a full face shield when needed.
• UNLEADED FUEL
Always use clean, fresh unleaded fuel
• ON/OFF STOP CONTROL
ON / START / RUN
• ON/OFF STOP CONTROL
OFF or STOP
• DO NOT USE E85 FUEL IN THIS UNIT
WARNING:
It has been proven that fuel containing greater than 10% ethanol will
likely damage this engine and void the warranty.
• THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY
WARNING:
Small objects can be propelled at high speed, causing injury. Keep
away from the rotating rotor.
• KEEP BYSTANDERS AWAY
WARNING:
Keep all bystanders, especially children and pets, at least 50 feet (15 m)
from the operating area.
• HOT SURFACE WARNING
Do not touch a hot muffler or cylinder. You may get burned. These parts get extremely
hot from operation. When turned off they remain hot for a short time.
• OIL
Refer to operator's manual for the proper type of oil.
• CHOKE CONTROL
1. • FULL choke position
2. • PARTIAL choke position
3. • RUN choke position
• SHARP BLADE
WARNING:
Sharp blade on cutting attachment shield. To prevent serious injury, do
not touch the line cutting blade.
2
KNOW YOUR UNIT
APPLICATIONS
As a trimmer:
• Cutting grass and light weeds.
• Edging
• Decorative trimming around trees,
fences, etc.
Other optional accessories may be used
with this unit.
TOOLS REQUIRED:
• Large Phillips screwdriver
On/Off Control
Rapid-Link®
Shaft Housing
Line
Cutting Head Shield
Cutting
Blade
Cutting Head
ASSEMBLY INSTRUCTIONS
INSTALL THE CUTTING HEAD SHIELD
WARNING:
To prevent serious personal injury, never operate the trimmer without the cutting head
shield in place.
Use the following instructions if the cutting head
shield on your unit is not installed.
1. Place the cutting head shield onto the shaft
housing. Be sure the guard mounting bracket
slides into the slot on the edge of the cutting
shield. Rotate the shield into place,
counterclockwise. The holes in the guard
mounting bracket and cutting head shield will
line up (Fig. 1).
2. From inside the cutting head shield, push the
square bolt through the hole until the threaded
end protrudes through the guard mounting bracket (Fig. 2).
3. Put the washer on the bolt, then screw the wing nut onto the bolt and tighten.
Figure 3 shows the installation process from underneath the unit.
INSTALL AND ADJUST THE J-HANDLE
1. Place the J-handle between the top and middle clamp pieces (Fig. 4).
2. While holding the 3 pieces together, install the 4 screws through the top clamp
and into middle clamp.
NOTE: The holes in the top and middle clamp will line up only when assembled
correctly.
3. Place the clamps and the J-handle over the shaft housing and onto the bottom clamp.
4. Hold each hex nut in the bottom clamp recess with a finger. Start screws with a
large Phillips screwdriver. Do not tighten until making the handle adjustment.
5. Slide the J-handle in or out until the arrow/white line on the decal touches the clamp
assembly (Fig. 4). You must first loosen the screws if the handle is pre-installed.
6. While holding the unit in the operating position (Fig. 15), position the J-handle to
the location that provides you the best grip.
7. Tighten the clamp screws evenly until tight.
OPERATING THE RAPID-LINK® SYSTEM
The Rapid-Link® system enables the use of these optional Add-Ons.
Mach 4® Trimmer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AF720
Hedge Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AH720*
Brushcutter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BC720*
Bladed Pruner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BP720
Blower Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BT720*
Blower Vacuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BV720
Cultivator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GC720
Lawn Dethatcher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LD720
Edger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LE720*
Pole Saw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PS720
Straight Shaft Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SS725
Snow Thrower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST720
Turbo Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TB720
* Do NOT use this Add-On with an electric powered unit.
REMOVING THE ADD-ON
1. Turn the knob counterclockwise to loosen (Fig. 7).
2. Press and hold the release button (Fig. 5).
3. While firmly holding the upper shaft housing,
pull the lower shaft housing straight out of the
Rapid-Link® coupler (Fig. 6).
INSTALLING THE ADD-ON
NOTE: To make installing or removing the add-
on easier, place the unit on the ground
or on a work bench.
1. Turn knob counterclockwise to loosen (Fig. 7).
2. While firmly holding the add-on, push it straight into the Rapid-Link® coupler (Fig. 6).
NOTE: Aligning the release button with the guide recess will help installation (Fig. 5).
3. Turn the knob clockwise to tighten (Fig. 7).
For decorative trimming/edging with the line cutting head, lock the release button
into the 90° hole (Fig. 7).
Spark Plug
Muffler
Starter Rope Grip
Blue Choke Lever
Shaft Grip
Throttle
Control
Air Filter/Muffler
J-Handle
Cover
Shaft Housing
Guard
Cutting
Mounting
Head
Guard
Bracket
Shield
Mounting
Bracket
Square Bolt
Fig. 1 Fig. 2
Square
Bolt
Cutting
Head
Shield
Fig. 3
Screws (4)
Bottom
Clamp
Nuts
Fig. 4
Rapid-Link® Primary Hole
Release Button
Coupler
Upper Shaft
Housing
Guide Recess
Fig. 5 Fig. 6
90˚ Edging Hole
(Trimmer Only)
Fig. 7
Oil Fill Plug
Fuel Cap
Primer
Bulb
Washer
Wing
Nut
Hole
Washer
Wing Nut
J-Handle
Top
Clamp
Middle
Clamp
Lower Shaft
Housing
Knob