Aero-Flex STIHL FS 45 Universal Replacement Head Kit Instructions

: June 13, 2024
: Aero-Flex

Table of Contents

Aero-Flex STIHL FS 45 Universal Replacement Head Kit
Product Information
Product Usage Instructions
INSTRUCTIONS
SHORT ARBOR CONVERSION
REMOVE ANY ARBOR ADAPTER
LONG ARBOR CONVERSION
YELLOW SPEEDSPOOL
INSTALLING LINE BLADES AND CAP
LIMITED WARRANTY
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Aero-Flex STIHL FS 45 Universal Replacement Head Kit

Product Information

The Aero-FlexMD Universal Kit is a versatile tool for converting and assembling various types of heads for your gardening equipment. It provides safe and efficient use of your trimmer or brush cutter.

Key Features:

Universal cap for compatibility with different fasteners
Long and short arbor conversion options
Easy-to-follow instructions
Compatible with STIHL FS 45 & FS 46 models

Product Usage Instructions

Conversion and Assembly

Remove the existing head from your equipment. Determine if it has a right or left thread to select the appropriate type of fastener to use.
Select the proper head from the Aero-FlexMD kit.
Before attaching the Aero-Flex Head, choose a compatible fastener from the kit and thread it onto the arbor head. Secure it with 40-60 in-lbs of torque.
If necessary, use the provided tools such as needle-nose pliers, snap ring pliers, and a hammer to remove any arbor adapter found on your equipment.
Grasp the rim of the head and unscrew it completely. Then, securely hand-tighten the new head onto the equipment.
If applicable, remove the cap using your thumb or a screwdriver and install the blades according to the instructions provided. You can refer to the back of the manual for more advanced line blade arrangements.

Safe Use and Precautions

To reduce the risk of injury, always read and follow the provided instructions carefully.
Protect your eyes and ears from flying debris and noise. Wear appropriate safety goggles and ear protection.
Never use the Aero-FlexMD Universal Kit without a shield. Ensure the shield is properly aligned to prevent accidents.
Do not position the shield improperly, as it may compromise the safety of the tool.

For more information, you can visit the official website at
www.aero-flex.com.

INSTRUCTIONS

For installation videos, see www.aero-flex.com

For gas trimmers only, no electrics

Get the free mobile app at:

Remove existing head, may be a right or left thread. This will tell you which type of fastener to use. (step 3)
Select proper head. $Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $2$$
Before attaching Aero-Flex Head, select the compatible fastener by threading onto arbor
Install proper Aero-Flex® Head and secure with 40-60 in-lbs of torque.
Alternately assemble two orange and two yellow (shown in gray) line blades.

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $5$$

See back for advanced line blade arrangement

SHORT ARBOR CONVERSION

Short arbor heads remove in one piece.

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $6$$

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $7$$

REMOVE ANY ARBOR ADAPTER

Remove any arbor adapter if found

CRAFTSMAN HASSLE-FREETM 4-LINE

RED SPEEDSPOOL 2®

Grasp rim to unscrew entire head then securely hand-tighten the Aero-Flex® short head.

LONG ARBOR CONVERSION

Remove retainer knob and line spool. Then remove entire head.

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $9$$

If there is a retaining washer,split with a sharp chisel

YELLOW SPEEDSPOOL

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $12$$

STIHL FS 45 & FS 46

Cut shield’s rib corner to clear head

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $13$$

CRAFTSMAN HASSLE-FREETM 2-LINE

Call for special fastener toll free: 888-702-1323

INSTALLING LINE BLADES AND CAP

Remove cap with thumb or screwdriver and install blades. See back for more advanced line blade arrangement.

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $16$$

WARNING
At high speeds, compared to conventional line, Aero-Flex® Line Blades can potentially throw more dangerous objects and cause more severe lascerations than line blade contact.

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $18$$

HELPFULTECHNIQ UES AND ME T HODS : YOUR TRIMMER CAN DO MORE THAN EVER!

Also see www.aero-flex.com

WHEN TO USE PART THROTTLE

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $19$$

WHEN TO USE FULL THROTTLE

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $20$$

MORE EFFICIENT AND COMFORTABLE USE

$Aero-Flex-STIHL-FS-45-Universal-Replacement-Head-Kit-FIG- $21$$

LIMITED WARRANTY

THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER EXPRESS WARRANTIES.
ANY IMPLIED WARRANTY OF FITNESS OR PARTICULAR PURPOSE,MERCHANTABILITY SHALL BE LIMITED IN DURATION TO THE DURATION OF THIS LIMITED WARRANTY. AERO-FLEX TECHNOLOGIES, INC. SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Aero-Flex® Technologies, Inc. warrants this product against defects in material and workmanship for a period of 30 days from date of original retail purchase.
This limited warranty is non transferable and does not cover damage resulting from any misuse from contact with sidewalks, rocks or other structures nor any damage caused by improper installation or improper maintenance. Your specific legal rights may vary from state to state. For Safety or Technical Questions and Updates, see the Safety & Instructions tab on our website www.aero- flex.com
Contact us at directly info@aero-flex.com or call us toll-free 888.880.AERO (2376)

©2013 Aero-Flex® Technologies, Inc.
236 Green St. Rock Hill, SC 29730
Phone: 803-329-3200 | Toll Free: 888-880-2376
Fax: 803-329-6590 | Customer Service: 888-702-1323
www.aero-flex.com
U.S. patents and patents pending