Shindaiwa 89291A User manual

SHINDAIWA GRASS TRIMMER TO BLADE CONVERSION
INSTRUCTIONS
WARNING!
Minimize the risk of injury to yourself and others! Read the Owner's/Opera-
tor's manual originally supplied with the unit that is being upgraded and
familiarize yourself with the contents. Always wear eye and hearing protec-
tion when operating your unit.
X7502236100
03/12
Model 89291A For Trimmer T242

2
CAUTION!
A statement preceded by the word “CAUTION” contains
information that should be acted upon to prevent mechanical
damage.
IMPORTANT!
A statement preceded by the word “IMPORTANT” is one that
possesses special signicance.
NOTE:
A statement preceded by the word “NOTE” contains information
that is handy to know and may make your job easier.
Throughout this manual are special “attention statements”.
WARNING!
A statement preceded by the triangular attention symbol and the word “WARNING” contains information that should be
acted upon to prevent serious bodily injury.
Attention Statements
Introduction
PAGE
These are instructions to convert a grass trimmer to a blade capable unit. This is not an Owner's/Operator's manual. Infor-
mation on how to operate and maintain the unit can be found in the Owner's/Operator's manual for the unit you are con-
verting. Note this kit is supplied with a cutting attachment shield that has been redesigned to provide better visibility and a
larger cutting swath when used as a grass trimmer.
Attention Statements ........................2
Safety Labels....................................3
Contents
IMPORTANT!
The instructions described in this manual are intended to help
you get the most from your Shindaiwa power tool as well as
to protect you and others from harm. These procedures are
guidelines for safe operation under most conditions, and are
not intended to replace any safety rules and/or laws that may
be in force in your area. If you have questions regarding your
Shindaiwa power tool, or if you do not understand something in
these instructions, your Shindaiwa dealer will be glad to assist
you. You may also contact Shindaiwa at the address printed on
the back of this instructional manual.
General Safety Instructions ..............3
Kit Contents......................................4
Read and follow this
operators manual.
Failure to do so could
result in serious injury.
Wear eye and hearing
protection at all times
during the operation
of this unit.
Keep bystanders
at least 50 feet (15 m)
away during operation.
Beware of thrown or
ricocheted objects.
Do not operate this unit
with a blade unless the
unit is equipped with a
Shindaiwa-approved
handlebar or barrier.
Always wear a harness
when operating this unit
with a blade. A harness
is also recommended when
using trimmer line.
If unit is used as a
brushcutter, beware of
blade thrust. A jammed
blade can cause the unit
to jerk suddenly and may
cause the operator to
lose control of the unit.
Assembly..........................................4
Shoulder Strap................................ 11
Using a Brushcutter Blade.............. 11
PAGE PAGE
IMPORTANT!
The information contained in these instructions describes
the product available at the time of publication.
Echo, Inc. reserves the right to make changes to products
without prior notice, and without obligation to make altera-
tions to units previously manufactured.
IMPORTANT!
If the cutting attachment shield has been removed from
your unit or the unit was manufactured prior to October
2001, an additional clamp kit will be required to complete
this installation. The clamp kit required is Shindaiwa part
number 80293.

3
Safety and Operation Information Labels: Make sure
all information labels are undamaged and readable.
Immediately replace damaged or missing information
labels. A new label is provided in this kit and additional
labels are available from your local authorized Shin-
daiwa dealer. Prior to installing the new label, Remove
old label and clean the outer tube with rubbing alcohol
or similar cleaner.
IMPORTANT!
Safety Labels
■When operating with a blade, make sure the handle
is positioned to provide you with maximum protection
from contacting the blade. Always make sure the bar-
rier bar is installed in accordance with instructions.
■NEVER use a cracked or warped blade: If a properly
installed blade vibrates, replace it with a new one and
re-check.
WARNING!
■ALWAYS Shut off the engine immediately if a blade
binds in a cut. Push the branch or tree to ease the
bind and free the blade.
■Beware of a coasting blade when brushcutting or
edging. A coasting blade can injure while it contin-
ues to spin after the throttle trigger is released or
after the engine is stopped.
General Safety Instructions

4
Assembly
Removing the Existing Cutting Attachment Shield
1. Remove the four socket-head cap screws (A),
bracket (B) and two shims (C).
2. Remove the cutting attachment shield from the
gearcase. AB
C
C
Kit Contents
2
3
4
13
56
13
1
7
8
9
10
11
12
14 15
16 17
18
19
20
21
22
23
24
25
# Description Qty
1 Warning Label 1
2 Debris Shield 1
3 Debris Shield Extension 1
4 M5 x 45 mm SPW Bolt 4
5 Upper Clamp 1
6 Spacer 2
7 Shoulder Strap 1
8 Hanger 1
9 M5 x 12 mm Socket Head Cap
Screw
1
10 M5 Nut 1
11 M5 x 35 mm SPW Bolt 4
12 Barrier Bar – 4 Hole 1
13 M5 Nut 4 4
14 Bolt Guard 1
15 M7 x 20 mm SW Bolt 1
16 Holder (A1) 1
17 Holder (B1) 1
18 Holder – Small (A2) 1
19 Holder/Bolt Guard (B2) 1
20 M7 x 24 mm Bolt (D2) 1
21 Barrier Bar – 1 Hole 1
22 M7 X 26mm Bolt (D3) 1
23 Bolt Guard (C3) 1
24 Holder (B3) 1
25 Clip (I) 1
Assembly Tool (s)

5
1. Remove gear case locating screw (D) and loosen
gear case clamp (E).
2. Remove gear case from outer tube.
Remove Gear Case
D
E
T242 with 1-screw Handle
Remove Handle Assembly
1. Remove handle assembly. Retain all parts for
future use.
Remove Handle Assembly
1. Remove the four socket-head cap screws (A) on the
handle (B) and remove the handle (B) and mounting
bracket (C).
B
A
T242 with 4-screw Handle
Handle Positioning Label
C

6
Install Hanger
1. Position the hanger (A) on the outer tube (B) between the handle
and throttle assembly and secure the hanger with the nut (C) and
bolt (D).
A
B
C,D
Install Handle and Barrier Bar
T242 with 1-screw Handle
1. Install Handle and Barrier Bar.
2. Adjust handle position for comfortable operation, and tighten screw securely.
Barrier Bar and Hanger Assembly
1. Install the barrier bar (H) with the socket-head cap
screws (A) and nuts (I). Tighten the screws nger-tight
ONLY at this time.
2. Locate the handle (B) in the best position for operator
comfort (usually about 10 inches ahead of the throttle
housing (E)).
3. Secure the handle by alternately tightening the four
socket-head screws in a diagonal or “criss-cross” fash-
ion.
Handle Positioning Label
T242 with 4-screw Handle
E
A
B
I
H

7
Install Gear Case
1. Install gear case onto outer tube. Align locating hole
on gear case with locating hole in tube.
2. Install locating bolt (A) and tighten clamp bolt (B).
A
B
Install New Cutting Attachment Shield
G
A
C
C
D
A
B
E
Assemble the Cutting Attachment Shield to the Outer Tube.
1. Insert the cutting attachment shield (A)
between the outer tube and the cutting
attachment mounting plate (B).
2. Fit the two shims (C) and the upper
clamp (D) over the outer tube and install
the four socket-head cap screws (E)
nger tight.
CAUTION!
Make sure the clamp screw and retain-
ing nut (F) are securely tightened before
tightening the four socket head screws.
3. Tighten the four socket-head cap screws
to secure the cutting attachment shield.
F
Sub-Shield.
(when trimmer head is in use)
1. Attach the sub-shield (G) extension to
the cutting attachment shield (A).
WARNING!
NEVER use this machine without sub-shield when us-
ing a trimmer head.
CAUTION!
Make sure the sub-shield is completely hooked at the
hook receiver.
WARNING!
NEVER operate the unit without the cutting attachment
shield installed and tightly secured!
WARNING!
A cutting attachment shield or other protective device is
no guarantee of protection against ricochet. YOU MUST
ALWAYS GUARD AGAINST FLYING DEBRIS!

8
26107
D1
C1
B1
A1
F
G
E
B1
The unit should now be completely assembled and ready for use with a
blade.
IMPORTANT!
Units with adjustable carburetors must be readjusted for blade use, otherwise
serious engine damage can occur.
WARNING!
A standard grass trimmer unit with loop handle should NEVER be operated with blade-type attachments. For blade use,
the trimmer must be tted with a bicycle-type handlebar or barrier bar that is located in front of the operator to reduce the
risk of the operator coming in contact with the cutting attachment. (Per ANSI B175.3). When using a blade, the unit must
be equipped with a harness or strap.
Installing Brushcutter Blade
CAUTION!
Install the blade (E) so its printed surface is visible to the operator when the
brushcutter is in the normal operating position.
WARNING!
The blade must t at against the holder ange. The blade mounting
hole must be centered over the raised boss on blade Holder (A1).
WARNING!
Holder (B1) must t ush against the blade and the splines engaged
to the output shaft.
WARNING!
Do not attach any blade to a unit without proper installation of all
required parts. Failure to use the proper parts can cause the blade to y off
and seriously injure the operator and/or bystanders.
Gear Case with notched ange:
1. Turn the unit over so that the gearcase output shaft faces UP.
2. Align the hole in the holder with the notch in the gearcase ange, and then
temporarily lock the output shaft by inserting a hex wrench through both
holes.
3. While holding the hex wrench, turn the trimmer head clockwise to remove.
Remove the hex wrench.
4. Remove trimmer head holder (F).
5. Install large blade holder (A1) onto output shaft (G).
6. Align the hole in the blade holder with the matching notch in the gear case
ange, and then temporarily lock the output shaft by inserting a hex wrench
through both holes. Hold hex wrench in place until blade retaining bolt is
tightened.
7. Fit the blade (E) over the ange on holder (A1)
8. Install large blade holder (B1) on the output shaft (G).
9. Install the bolt guard (C1) and then the 7 x 20mm blade retaining bolt with
lockwasher (D1). Using the combination spark plug wrench/screwdriver,
tighten the bolt rmly in a counter-clockwise direction.
10.Remove hex wrench.

9
Gear Case with side-mounted locking tool hole:
1. Turn the unit over so that the gearcase output shaft faces UP.
2. Align the notch in trimmer head holder (F) with the notch in the gear case
ange. Lock the holder and output shaft by inserting a hex wrench through
the locking hole in the gear case and into the aligned notches.
3. While holding the hex wrench turn the trimmer head clockwise to remove.
4. Remove the hex wrench.
5. Remove trimmer head holder (F).
D2
G
B2
A2
E
B2
G
Blade not shown for
clarity
WARNING!
The blade must t at against the holder ange. The blade mounting
hole must be centered over the raised boss on blade Holder (A2).
WARNING!
Holder (B2) must t ush against the blade and the splines engaged
to the output shaft.
CAUTION!
Install the blade (E) so its printed surface is visible to the operator when the
brushcutter is in the normal operating position.
6. Install small blade holder (A2) onto output shaft (G).
WARNING!
Do not attach any blade to a unit without proper installation of all required
parts. Failure to use the proper parts can cause the blade to y off and seri-
ously injure the operator and/or bystanders.
7. Align the notch in blade holder (A2) with the notch in the gear case ange.
Lock the holder and output shaft by inserting a hex wrench through the locking
hole in the gear case and into the aligned notches. Hold hex wrench in place
until blade retaining bolt is tightened.
8. Fit the blade (E) over the ange on holder (A2).
9. Install blade holder/bolt guard (B2) on the output shaft (G).
10. Install the 7 x 24mm blade retaining bolt with at washer (D2). Using the
combination spark plug wrench/screwdriver, tighten the bolt rmly in a
counterclockwise direction.
11. Remove hex wrench.
IMPORTANT!
Discard blades that are bent, warped, cracked, broken or damaged in any way.
Use a sharp blade. A dull blade is more likely to snag and thrust.
The unit should now be completely assembled and ready for use with a blade.
IMPORTANT!
Units with adjustable carburetors must be readjusted for blade use, otherwise seri-
ous engine damage can occur.
F

10
Gear Case with side-mounted locking tool hole and
grooved output shaft:
1. Turn the unit over so that the gearcase output shaft faces UP.
2. Align the notch in trimmer head holder (F) with the notch in the gear case
ange. Lock the holder and output shaft by inserting a hex wrench through
the locking hole in the gear case and into the aligned notches.
3. While holding the hex wrench turn the trimmer head clockwise to remove.
4. Remove the hex wrench.
5. Remove trimmer head holder (F).
WARNING!
The blade (E) must t at against the holder ange. The blade
mounting hole must be centered over the raised boss on blade Holder (A2).
WARNING!
Holder (B3) must t ush against the blade and the splines engaged
to the output shaft.
CAUTION!
Install the blade (E) so its printed surface is visible to the operator when the
brushcutter is in the normal operating position.
6. Install small blade holder (A2) onto output shaft (G).
WARNING!
Do not attach any blade to a unit without proper installation of all required
parts. Failure to use the proper parts can cause the blade to y off and seri-
ously injure the operator and/or bystanders.
7. Align the notch in blade holder (A2) with the notch in the gear case ange.
Lock the holder and output shaft by inserting a hex wrench through the locking
hole in the gear case and into the aligned notches. Hold hex wrench in place
until blade retaining bolt is tightened.
8. Fit the blade (E) over the ange on holder (A2).
9. Install clip (I) and Holder (B3) on the output shaft (G).
10. Install bolt guard (C3) and the 7x26 mm shaft bolt (D3). Tighten the bolt rmly
in a counter-clockwise direction.
11. Remove hex wrench.
IMPORTANT!
Discard blades that are bent, warped, cracked, broken or damaged in any way.
Use a sharp blade. A dull blade is more likely to snag and thrust.
The unit should now be completely assembled and ready for use with a blade.
IMPORTANT!
Units with adjustable carburetors must be readjusted for blade use, otherwise seri-
ous engine damage can occur.
F
A2
I
B3
C3
D3
E
B3
G
I

11
Shoulder Strap
NOTE:
Although a shoulder strap accessory is not required for use with a grass trimmer, a shoulder
strap can increase operator comfort during extended periods of operation.
WARNING!
Always wear a shoulder strap when operating this unit with a blade. A shoulder strap is also
recommended when using trimmer line.
NOTE:
Using a shoulder strap with a brush-cutter allows you to maintain proper control of the unit and
reduces fatigue during extended operation.
Adjust the shoulder strap so the shoulder pad rests comfortably on the off-side shoulder and the cutting path of the cutting attach-
ment is parallel to the ground. Tighten hanger screw.
WARNING!
A standard grass trimmer unit with loop handle should NEVER be operated with blade-type attachments. For blade use,
the trimmer must be tted with a bicycle-type handlebar or barrier bar that is located in front of the operator to reduce the
risk of the operator coming in contact with the cutting attachment. (Per ANSI B175.3). When using a blade, the unit must
be equipped with a harness or strap.

12
WARNING!
Before working with a blade-equipped unit, always inspect and clear the area of objects that could interfere with or
damage the blade.
Never use a blade near sidewalks, fence posts, buildings or other objects that could cause injury or damage.
Never use a blade for purposes other than those for which it was designed.
Whenever you strike a hard object with a blade, always stop the brushcutter and carefully inspect the blade for dam-
age. NEVER OPERATE THE UNIT WITH A DAMAGED BLADE!
A blade-equipped unit must be equipped with a bicycle-type handlebar or barrier bar as well as a harness or strap.
Always make sure the cutting attachment shield is properly installed before operating the unit.
Using A Brushcutter Blade
Blade Thrust
‘Blade thrust’ is a sudden sideways or backward motion of the brushcutter.
Such motion may occur when the blade jams or catches on an object such
as a sapling tree or tree stump. BE CONSTANTLY ALERT FOR BLADE
THRUST AND GUARD AGAINST ITS EFFECTS!
Barrier Bar
A brushcutter’s barrier bar helps prevent the operator from moving forward,
or the unit moving rearward, thus preventing inadvertent bodily contact with
the blade. ALWAYS KEEP THE BARRIER BAR SECURELY IN PLACE ON
THE UNIT!
Shoulder Strap or Harness
A shoulder strap or harness provides additional protection against blade
thrust. In addition, a shoulder strap or harness gives signicant support and
comfort to help ensure safe and efcient operation.
When operating a unit equipped with a blade, make sure both the handle/
barrier bar and shoulder strap or harness are adjusted to the size of the
operator using the unit.
The blade rotates counter-clockwise. For best performance and to minimize
being struck by debris, move the blade from right to left while advancing on
your work.
Position the blade so cuts are made between the blade’s 7 o’clock and
11 o’clock positions (as viewed from above). DO NOT cut between the 11
o’clock and 5 o’clock positions (shaded area).
Seven
O’Clock
OK To Cut
Blade
Rotation
D
O
N
O
T
C
U
T
Five
O’Clock
Eleven
O’Clock
BCC17

13
NOTES

14
NOTES

15
NOTES

ECHO Incorporated.
400 Oakwood Road
Lake Zurich, IL 60047-1564 U.S.A.
Telephone: [phone]
Fax: [phone]
www.shindaiwa.com
Yamabiko Corporation
7-2 Suehirocho 1-Chome, Ohme,
Tokyo, 198-8760, Japan
Phone: [phone]
Fax: [phone]
Copyright© 2012 By Echo, Incorporated
All Rights Reserved.
Consumer Product Support
If you require assistance or have questions concerning the application, operation or maintenance of this product you
may call the Shindaiwa Consumer Product Support Department at 1-877-986-7783 from 8:30 am to 4:30 pm (Central
Standard Time) Monday through Friday. Before calling, please know the model and serial number of your unit.