Shindaiwa F230 Owner's manual

SHINDAIWA OWNER’S/
OPERATORS MANUAL
F230 GRASS TRIMMER
WARNING!
Minimize the risk of injury to yourself and others!
Read this manual and familiarize yourself with the
contents. Always wear eye and hearing protection
when operating this unit.
Part Number 62068-94011
Rev. 3/04
Shindaiwa Inc.
11975 S.W. Herman Road
Tualatin, Oregon 97062
Telephone: [phone]
Fax: [phone]
www.shindaiwa.com
Shindaiwa Kogyo Co., Ltd.
Head Office: 6-2-11 Ozuka
Nishi, Asaminami-Ku
Hiroshima, 731-3167, Japan
Telephone: [phone]
Fax: [phone]
䊚2004 Shindaiwa, Inc.
Part Number 62068-94011
Printed in Japan
Rev. 3/04
Specifications subject to change without notice.

2
Introduction
PAGE
The Shindaiwa F230 curved-shaft
grass trimmer has been designed and
built to deliver superior performance
and reliability without compromise to
quality, comfort, safety or durability.
Shindaiwa’s high-performance
engines represent the leading edge of
2-cycle engine technology, delivering
exceptionally high power at remark-
ably low displacement and weight. As
an owner/operator, you’ll soon
discover for yourself why Shindaiwa is
simply in a class by itself!
IMPORTANT!
The information contained in these
instructions describes units available
at the time of publication.
While every attempt has been made
to give you the very latest information
about your Shindaiwa unit, there may
be some differences between your
F230 and what is described here.
Shindaiwa Inc. reserves the right to
make changes to products without
prior notice, and without obligation to
make alterations to units previously
manufactured.
Attention Statements........................... 3
Safety .................................................... 4
Product Description ............................ 9
Specifications ..................................... 10
Assembling the F230 ........................ 11
Mixing Fuel ........................................ 17
Starting the Engine ........................... 18
Stopping the Engine.......................... 20
Adjusting Engine Idle ....................... 20
Cutting Grass ..................................... 22
Maintenance ...................................... 23
Troubleshooting Guide .................... 28
Emission System Warranty .............. 32
Contents

3
Throughout this manual are special
“attention statements”.
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 significance.
NOTE:
A statement preceded by the word
“NOTE” contains information that is
handy to know and may make your
job easier.
Attention Statements
IMPORTANT!
The operational procedures described
in this manual are intended to help
you get the most from your unit as
well as to protect you and others from
harm. These procedures are guide-
lines 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
F230 grass trimmer, or if you do not
understand something in this manual,
your Shindaiwa dealer will be glad to
assist you.
You may also contact Shindaiwa, Inc.
at the address printed on the back of
this Manual.
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.
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.
NOTES:

4
Work Safely
Shindaiwa grass trimmers operate at
very high speeds and can do serious
damage or injury if they are misused or
abused. Never allow a person without
training or instruction to operate your
grass trimmer!
WARNING!
Use Good Judgment
ALWAYS wear eye protection to
shield against thrown objects.
NEVER run the engine when
transporting the unit.
NEVER run the engine indoors!
Make sure there is always good
ventilation. Fumes from engine
exhaust can cause serious injury
or death.
ALWAYS clear your work area of
trash or hidden debris that could
be thrown back at you or toward
a bystander.
ALWAYS use the proper cutting
tool for the job.
ALWAYS stop the unit immedi-
ately if it suddenly begins to
vibrate or shake. Inspect for
broken, missing or improperly
installed parts or attachments.
NEVER extend trimming line
beyond the length specified for
your unit.
ALWAYS keep the unit as clean
as practical. Keep it free of loose
vegetation, mud, etc.
ALWAYS hold the unit firmly with
both hands when cutting or
trimming, and maintain control at
all times.
ALWAYS keep the handles
clean.
ALWAYS disconnect the spark
plug wire before performing any
maintenance work.
Stay Alert
You must be physically and mentally
fit to operate this unit safely.
General Safety Instructions
WARNING!
Never make unauthorized
attachment installations.
WARNING!
Never operate power equipment of
any kind if you are tired or if you
are under the influence of alcohol,
drugs, medication or any other
substance that could affect your
ability or judgement.
WARNING!
Minimize the Risk of Fire
NEVER smoke or light fires near
the trimmer.
ALWAYS stop the engine and
allow it to cool before refueling.
Avoid overfilling and wipe off any
fuel that may have spilled.
ALWAYS move the unit to a place
well away from a fuel storage
area or other readily flammable
materials before starting the
engine.
NEVER place flammable material
close to the engine muffler.
NEVER run the engine without
the spark arrester screen in place.
33
MAINTENANCE AND REPAIR REQUIREMENTS
You are responsible for the proper use and maintenance of the engine. You should keep all
receipts and maintenance records covering the performance of regular maintenance in the event
questions arise. These receipts and maintenance records should be transferred to each subse-
quent owner of the engine. Shindaiwa Kogyo Co., Ltd. reserves the right to deny warranty
coverage if the owner has not properly maintained the engine. Shindaiwa Kogyo Co., Ltd. will not
deny warranty repairs, however, solely because of the lack of repair, maintenance or failure to
keep maintenance records.
MAINTENANCE, REPLACEMENT OR REPAIR OF EMISSION CONTROL DEVICES AND
SYSTEMS MAY BE PERFORMED BY ANY REPAIR ESTABLISHMENT OR INDIVIDUAL;
HOWEVER, WARRANTY REPAIRS MUST BE PERFORMED BY A DEALER OR SERVICE
CENTER AUTHORIZED BY SHINDAIWA KOGYO CO., LTD. THE USE OF PARTS THAT ARE
NOT EQUIVALENT IN PERFORMANCE AND DURABILITY TO AUTHORIZED PARTS MAY
IMPAIR THE EFFECTIVENESS OF THE EMISSION CONTROL SYSTEM AND MAY HAVE A
BEARING ON THE OUTCOME OF A WARRANTY CLAIM.
If other than the parts authorized by Shindaiwa Kogyo Co., Ltd. are used for maintenance
replacements or for the repair of components affecting emission control, you should assure
yourself that such parts are warranted by their manufacturer to be equivalent to the parts
authorized by Shindaiwa Kogyo Co., Ltd. in their performance and durability.
OBTAINING WARRANTY SERVICE
All repairs qualifying under this limited warranty must be performed by a dealer authorized by
Shindaiwa Kogyo Co., Ltd.
If any emission-related part is found defective during the warranty period, it is your responsibil-
ity to present the product to an authorized Shindaiwa dealer. Bring your sales receipts showing
the date of purchase for this engine. The dealer authorized by Shindaiwa Kogyo Co., Ltd. will
perform the necessary repairs or adjustments within a reasonable amount of time and furnish you
with a copy of the repair order. All parts and accessories replaced under this warranty become the
property of Shindaiwa Kogyo Co., Ltd.
To locate an authorized Shindaiwa dealer near you, contact your Shindaiwa Distributor. For the
name and telephone number of the Shindaiwa Distributor in your area, please call Shindaiwa Inc.
at [phone] between the hours of 8:00 AM and 5:00 PM Pacific Standard Time.
THIS WARRANTY IS ADMINISTERED BY
Shindaiwa Inc.
11975 S.W. Herman Rd.
Tualatin OR. 97062
[phone]

5
The Properly Equipped Operator (general)
Always operate with
both hands firmly
gripping the unit.
Wear close-fitting clothing to
protect legs and arms. Gloves
offer added protection and are
strongly recommended. Do not
wear clothing or jewelry that
could get caught in machinery
or underbrush. Secure long
hair so that it is above
shoulder level.
NEVER wear
shorts!
Wear hearing protection devices and a
broad-brimmed hat or helmet.
Always wear eye protec-
tion such as goggles or
safety glasses.
Keep away from the rotating
trimmer line at all times, and
never lift a moving attachment
above waist-high.
Wear appropriate footwear (non-skid
boots or shoes): do not wear open-
toed shoes or sandals. Never work
barefooted!
Keep a proper
footing and do
not overreach—
maintain your
balance at all times
during operation.
Always make sure the
appropriate cutting attach-
ment shield is correctly
installed and in good
condition.
Figure 1
32
Shindaiwa Kogyo Co., Ltd.
Federal Emission Design And Defect Limited Warranty
Utility And Lawn And Garden Engines
Shindaiwa Kogyo Co., Ltd. warrants to the initial purchaser and each subsequent owner, that
this utility equipment engine (herein engine) is designed, built and equipped to conform at the
time of initial sale, to all applicable regulations of the U.S. Environmental Protection Agency
(EPA), and that the engine is free of defects in materials and workmanship that would cause this
engine to fail to conform with EPA regulations during its warranty period. This emission warranty
is applicable in all States, except the State of California.
For parts listed under PARTS COVERED, the dealer authorized by Shindaiwa Kogyo Co., Ltd.
will, at no cost to you, make the necessary diagnosis, repair, or replacement of any defective
emission-related component to ensure that the engine complies with applicable U.S. EPA
regulations.
MANUFACTURERS WARRANTY COVERAGE
When sold within the U.S., this engine’s emission control system is warranted for a period of two
(2) years from the date this product is first delivered to the original retail purchaser.
OWNER’S WARRANTY RESPONSIBILITIES
As the engine owner, you are responsible for the performance of the required maintenance listed
in your owner’s manual. Shindaiwa Kogyo Co., Ltd. recommends that you retain all receipts
covering maintenance on your engine, but Shindaiwa Kogyo Co., Ltd. cannot deny a warranty
claim solely for the lack of receipts or for your failure to ensure the performance of all scheduled
maintenance.
As the engine owner, you should however be aware that Shindaiwa Kogyo Co., Ltd. may deny
your warranty coverage if your engine or a part has failed due to abuse, neglect, improper
maintenance or unapproved modifications.
You are responsible for presenting your engine to the nearest dealer authorized by Shindaiwa
Kogyo Co., Ltd. when a problem exists.
If your Shindaiwa Dealer is unable to answer questions regarding your warranty rights and
responsibilities, you should then contact your Shindaiwa Distributor.
For the name and telephone number of the Shindaiwa Distributor in your area, please call
Shindaiwa Inc. at [phone] between the hours of 8:00 AM and 5:00 PM Pacific Standard
Time.
PARTS COVERED
Listed below are the parts covered by the Federal Emission Design and Defect Warranty. Some
parts listed below may require scheduled maintenance and are warranted up to the first scheduled
replacement of that part. The warranted parts include:
1. Carburetor Internal Components
• Valve Assembly-throttle, Jet, Metering Diaphram
2. Ignition System Components
• Ignition Coil
• Flywheel Rotor
The emission control system for your particular Shindaiwa engine may also include certain
related hoses and connectors.
LIMITATIONS
The Federal Emission Design and Defect Warranty shall not cover any of the following:
(a) conditions resulting from tampering, misuse, improper adjustment (unless they were
made by the dealer or service center authorized by Shindaiwa Kogyo Co., Ltd. during a warranty
repair), alteration, accident, failure to use the recommended fuel and oil, or not performing
required maintenance services,
(b) the replacement parts used for required maintenance services,
(c) consequential parts used for required maintenance services,
(d) diagnosis and inspection fees that do not result in eligible warranty service being
performed, and
(e) any non-authorized replacement part, or malfunction of authorized parts due to use of
non-authorized parts.
The following statement only applies to United States and its territories

6
Safety Labels
Figure 2
IMPORTANT!
Safety and Operation Information Labels:
Make sure all information labels are
undamaged and readable. Immediately
replace damaged or missing information
labels. New labels are available from your
local authorized Shindaiwa dealer.
31
Troubleshooting Guide
ADDITIONAL PROBLEMS
Excessive
vibration.
Warped or damaged
tool.
Loose gearcase.
Bent main shaft/worn or
damaged bushings.
Inspect and repair
tool as required.
Tighten gearcase securely.
Inspect and replace
as necessary.
Cutting attachment
will not move.
Shaft not installed
in powerhead, coupler
or gearcase.
Broken shaft.
Damaged gearcase.
Inspect and reinstall
as required.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.

7
50
FEET
Be Aware of the Working Environment
Avoid long-term
operation in very hot or
very cold weather.
Make sure bystanders or
observers outside the 50-foot
“danger zone” wear eye
protection.
Be extremely
careful of
slippery terrain,
especially
during rainy
weather.
Always make sure
the appropriate
Cutting Attachment
shield is correctly
installed.
If contact is made with a hard
object, stop the engine and inspect
the cutting attachment for damage.
Be constantly alert for objects and debris that
could be thrown from the rotating cutting attach-
ment or bounced from a hard surface.
Reduce the risk of
bystanders being
struck by flying debris.
Make sure no one is
within 50 feet (15
meters)—that’s about
16 paces—of an
operating attachment.
When operating in rocky terrain or near electric
wires or fences, use extreme caution to avoid
contacting such items with the cutting attachment.
Figure 3
30
ADDITIONAL PROBLEMS
Troubleshooting Guide
Poor
acceleration.
Clogged air cleaner
element.
Clogged fuel filter.
Carburetor mixture
too lean.
Idle speed set too low.
Clean the air cleaner
element.
Replace the fuel filter.
Consult with an authorized
servicing dealer.
Adjust: 2,750 rpm (min
-1
) (Ⳳ250)
Engine stops
abruptly.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or
loose terminal.
Ignition failure.
Piston seizure.
Reset the switch and re-start.
Refuel.
Replace filter.
Drain and refill with fresh, clean
unleaded gasoline with a pump octane
of 87 or higher mixed with
50:1 Shindaiwa Premium 2-cycle
mixing oil or with an equivalent high
quality 2-cycle mixing oil.
Clean and replace spark plug,
tighten the terminal.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Engine difficult
to shut off.
Ground (stop) wire is
disconnected, or switch
is defective.
Overheating due to
incorrect spark plug.
Overheated engine.
Test and replace
as required.
Replace the spark plug with a
Champion CJ8 or equivalent spark
plug of the correct heat range.
(For electro magnetic compliance
(EMC) use a NGK BMR6A resistor plug)
Adjust the spark plug electrode gap to
0.024-inch (0.6 mm).
Idle engine until cool.
Cutting
attachment
moves at
engine idle.
Engine idle too high.
Broken clutch spring or
worn clutch spring boss.
Set idle: 2,750 rpm (min
-1
) (Ⳳ250)
Replace spring/shoes as
required, check idle speed.

8
NEVER operate the unit with the
cutting attachment shield or other
protective devices (harness, ignition
switch, etc.) removed!
NEVER use a cracked or warped
cutting attachment: replace it with a
serviceable one.
ALWAYS make sure the cutting
attachment fits properly into the cutter
holder. If a properly installed attach-
ment vibrates, replace the attachment
with new one and re-check.
ALWAYS stop the engine immediately
and check for damage if you strike a
foreign object or if the unit becomes
tangled. Do not operate with broken
or damaged equipment.
NEVER allow the engine to run at
high RPM’s without a load. Doing so
could damage the engine.
NEVER operate a unit with worn or
damaged fasteners or attachment
holders.
Use only authorized Shindaiwa parts
and accessories with your Shindaiwa
trimmer. Do not make modifications
to this unit without the written
approval of Shindaiwa, Inc.
ALWAYS make sure the cutting
attachment is properly installed and
firmly tightened before operation.
Check Unit Condition
A Cutting Attachment Shield or
other protective device is no
guarantee of protection against
ricochet. YOU MUST ALWAYS
GUARD AGAINST FLYING
DEBRIS!
WARNING!
29
Troubleshooting Guide
LOW POWER OUTPUT
Is the engine
overheating?
Operator is overworking
the machine.
Carburetor mixture is
too lean.
Improper fuel ratio.
Fan, fan cover, cylinder
fins dirty or damaged.
Carbon deposits on the
piston or in the muffler.
Shorten trimmer line. Cut at
a slower rate.
Consult with an authorized
servicing dealer.
Refill with fresh, clean unleaded
gasoline with a pump octane
of 87 or higher mixed with
50:1 Shindaiwa Premium 2-cycle
mixing oil or with an equivalent high
quality 2-cycle mixing oil.
Clean, repair or replace
as necessary.
Consult with an authorized
servicing dealer.
Engine is rough
at all speeds.
May also have
black smoke
and/or unburned
fuel at the
exhaust.
Clogged air cleaner
element.
Loose or damaged
spark plug.
Air leakage or clogged
fuel line.
Water in the fuel.
Piston seizure.
Faulty carburetor and/
or diaphragm.
Service the air cleaner.
Tighten or replace.
Replace the spark plug with a
Champion CJ8 or equivalent spark
plug of the correct heat range.
(For electro magnetic compliance
(EMC) use a NGK BMR6A resistor plug)
Adjust the spark plug electrode gap to
0.024-inch (0.6 mm).
Repair or replace fuel
filter and/or fuel line.
Refill with fresh, clean unleaded
gasoline with a pump octane
of 87 or higher mixed with
50:1 Shindaiwa Premium 2-cycle
mixing oil or with an equivalent high
quality 2-cycle mixing oil.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Engine is
knocking.
Overheating condition.
Improper fuel.
Carbon deposits in the
combustion chamber.
See above.
Check fuel octane rating;
check for presence of
alcohol in the fuel (pg. 17).
Refuel as necessary.
Consult with an authorized
servicing dealer.

9
Product Description
Using the accompanying illustrations
as a guide, familiarize yourself with
your unit and its various components.
Understanding your unit helps ensure
top performance, long service life, and
safer operation.
Do not make unauthorized
modifications or alterations to any
of these products or their
components.
Cutting Attachment
Shield
Outer Tube
Throttle Trigger
Trimmer Head
Ignition Switch
Handle
Fuel Tank
Grip
Cylinder Cover
Air Cleaner
Cover
Spark Plug
WARNING!
Figure 4
28
Troubleshooting Guide
ENGINE DOES NOT START
Does the engine
crank?
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Good
compression?
Loose spark plug.
Excess wear on
cylinder, piston, rings.
Tighten and re-test.
Does the tank
contain fresh
fuel of the
proper grade?
Refill with fresh, clean unleaded
gasoline with a pump octane
of 87 or higher mixed with
50:1 Shindaiwa Premium 2-cycle
mixing oil or with an equivalent high
quality 2-cycle mixing oil.
Fuel incorrect, stale, or
contaminated; mixture
incorrect.
Is fuel visible
and moving in
the return line
when priming?
Check for clogged fuel
filter and/or vent.
Clean as required;
restart.
Is there spark at
the spark plug
wire terminal?
The ignition switch
is in “O” (OFF) position.
Shorted ignition ground.
Faulty ignition unit.
Move switch to “I” (ON)
position and re-start.
Check the
spark plug.
If the plug is wet, excess
fuel may be in the
cylinder.
The plug is fouled
or improperly gapped.
The plug is damaged
internally or of the
wrong size.
Crank the engine with the
plug removed, reinstall the
spark plug, and re-start.
Clean and re-gap the spark plug
to 0.024 inch (0.6 mm). Re-start.
Replace the spark plug with a
Champion CJ8 or equivalent spark
plug of the correct heat range.
(For electro magnetic compliance
(EMC) use a NGK BMR6A resistor plug)
Adjust the spark plug electrode gap to
0.024-inch (0.6 mm).

10
Specifications*
Shindaiwa Model/Engine ...................................................................... F230/SE230
Transmission Type ....................... Automatic centrifugal clutch with flexible shaft
Gear Reduction ................................................................................... Direct coupling
Rotation........................................................ Clockwise (when viewed from the top)
Operating Speed ................................................................... 5000—9000 rpm (min-1)
Dry Weight .......... 4.4 kg/9.8 lbs (not including trimmer head and debris shield)
Engine Dimensions (L x W x H) ........ 1770 x 280 x 280 mm/70 x 11 x 11 inches
Engine Type ...................................................... 2-cycle, vertical-cylinder, air-cooled
Bore x Stroke ................................................................. 32 x 28 mm/1.26 x 1.10 in.
Displacement ................................................................................. 22.5 cc/1.4 cu. in.
Maximum Power Output ............................................. 1.1 HP @ 7500 rpm (min-1)
Fuel/Oil Ratio ............................................. 50:1 with Shindaiwa 2-cycle Mixing Oil
Fual Tank Capacity ........................................................................... 554 ml/18.7 oz.
Carburetor Type ........................................................ Walbro WYL, diaphragm-type
Ignition .................................................. One-piece electronic, transistor-controlled
Spark Plug ............................................................................................. Champion CJ8
...................................For electro magnetic compliance (EMC) use NGK BMR6A
Air Cleaner Type ........................................... Non-reversible flocked filter element
Starting Method ................................................................................................. Recoil
Stopping Method ...................................................................................... Slide switch
Prior to Assembly
Before assembling, make sure you
have all the components required for a
complete unit:
■Engine assembly
■Outer tube assembly
■Cutting attachment shield
■Trimmer head
■Tool kit containing hex wrench, open-
end wrench (8 mm and 10 mm),
spark-plug/screwdriver combination
wrench, and this manual
Carefully inspect all components for
damage.
IMPORTANT!
The terms “left”, “left-hand”, and “LH”;
“right”, “right-hand”, and “RH”; “front”
and “rear” refer to directions as
viewed by the operator during normal
operation.
*Specifications are subject to change without notice.
27
CAUTION!
Gasoline stored in the carburetor
for extended periods can cause
hard starting, and could also lead
to increased service and mainte-
nance costs.
FLEXIBLE DRIVE CABLE Clean
and lubricate the flexible drive cable
as follows:
Cable (clean
and grease)
Shaft Tube
1. Remove the powerhead and slide
the flexible cable from the shaft
tube assembly.
2. Wash the cable thoroughly in a
solvent bath, and then coat the
entire cable with Shindaiwa
Premium Gearcase Lubricant.
3. Install the cable in the shaft tube,
then replace the powerhead in the
reverse order of removal.
NOTE:
For maximum cable life, the flexible
cable should be reversed “end-for-
end” during reinstallation.
Figure 28
Long Term Storage
Whenever the unit will not be used for
30 days or longer, use the following
procedures to prepare it for storage:
■Clean external parts thoroughly
and apply a light coating of oil to all
metal surfaces.
■Drain all the fuel from the fuel tank.
IMPORTANT!
All stored fuels should be stabilized
with a fuel stabilizer such as
STA-BIL™ , if oil with fuel
stabilizer is not used.
To remove the remaining fuel from
the fuel lines and carburetor and with
the fuel drained from the fuel tank.
1. Prime the primer bulb until no
more fuel is passing through.
2. Start and run the engine until stops
running.
3. Repeat steps 1 and 2 until the
engine will no longer start.
■Remove the spark plug and pour
about 1/4 ounce of 2-cycle mixing
oil into the cylinder through the
spark plug hole. Slowly pull the
recoil starter 2 or 3 times so oil will
evenly coat the interior of the
engine. Reinstall the spark plug.
■Before storing the unit, repair or
replace any worn or damaged parts.
■Remove the air cleaner element
from the carburetor and clean it
thoroughly with soap and water. Let
dry and reassemble the element.
■Store the unit in a clean,
dust-free area.

11
23001
23002
Driveshaft/Powerhead
Grip
Spark
Plug
Main
Shaft
Tube
Clamp
Outer Tube
1. Place the powerhead on a clean, flat
surface, spark plug facing up.
See Figure 5.
2. Use the
4mm hex
wrench to
loosen the
tube clamp
screw. Verify
that the D-
shaped shim
washer is
positioned as
shown in
Figure 6.
Tube Clamp
Hex
Wrench
Shim
Washer
CAUTION!
Do not remove the D-shaped shim
washer! The shim washer pre-
vents damage from overtightening
the tube clamp screw.
3. Slide the outer tube into the tube
clamp until the tube bottoms. If
installation is difficult, rotate the
outer tube or mainshaft slightly
until you feel the flexible shaft
engage with the powerhead.
4. Position the outer tube so that the
ignition switch is facing up and the
throttle trigger is down. Slide the
outer tube into the powerhead until
the throttle grip just contacts the
tube clamp.
5. Tighten the clamp screw firmly.
Connect the Outer Tube to the Powerhead
CAUTION!
Do not force the shaft tube into the
powerhead! Excessive force can
damage the shaft tube and
mainshaft.
Clamp
Screw
Figure 5
Figure 6
Assembly
Throttle
Trigger
Ignition
Switch
26
135-hour Maintenance
After every 135 hours of operation
or if engine becomes hard to start
and has low power. The spark
arrester screen should be inspected
and cleaned.
1. Remove the spark plug boot.
2. Remove the engine cover by
loosening the engine cover knob
(the knob is captive) and lifting the
cover from the engine.
WARNING!
Never operate the unit with a
damaged or missing muffler or
spark arrester! Operating with
missing or damaged exhaust
components is a fire hazard and
could also damage your hearing.
3. Remove the spark arrester
screen screw.
4. Remove the spark arrester screen
and clean with a stiff bristle brush.
IMPORTANT!
If carbon deposits are severe or if no
performance improvement is noted,
your 230 grass trimmer should be
returned to your Shindaiwa authorized
servicing dealer.
5. Reassemble the spark arrester
screen and engine cover in
reverse order.
23024
Engine Cover
Engine Cover
Knob
Figure 18
Spark
Arrester
Screen
Spark Arrestor
Retaining Screw
Muffler

12
23005
Assembly
Throttle Linkage and Ignition Leads
Remove the Cylinder Cover.
1. Remove the cap from the spark
plug.
2. Loosen the black cylinder cover
knob (about a dozen full turns are
required), and then lift off the
cylinder cover.
NOTE:
If the cover binds on the muffler outlet
tube, pull gently on the corner of the
cover as shown (see inset).
Connect the Throttle Cable.
1. Route the ribbed cable over the
tube clamp to the top left side of the
engine.
2. Install the black wire between the
two cable adjuster nuts as shown.
See Figure 8.
3. Connect the S-shaped end of the
throttle cable to the throttle lever
on top of the carburetor.
See Figure 9.
Install the black wire
between the two cable
adjusters.
Connect the
throttle cable
Ignition
Ground
Lead
Cable Adjuster
Figure 8
Figure 9
23006
Loosen the
cylinder cover
knob and
disconnect the
spark plug cap
Lift the corner of
the cover
Figure 7
25
23023
50-Hour Maintenance
Every 50 hours of operation
(more frequently in dusty or dirty
conditions):
■Remove and clean the cylinder
cover and clean grass and dirt from
the cylinder fins.
■Use a hooked wire to extract the
fuel filter from inside the fuel tank.
See figure 26. Remove and replace
the filter element. Before reinstall-
ing the filter, inspect the condition
of the fuel line. If damage or
deterioration is noted, the F230
Grass Trimmer should be removed
from service until it can be in-
spected by a Shindaiwa-trained
service technician.
Filter Element
Hooked
Wire
Figure 26
CAUTION!
Make sure you do not pierce the
fuel line with the end of the
hooked wire, the line is delicate
and can be damaged easily.

13
Assembly
Throttle Linkage and Ignition Leads
Black Wire
Terminal Black Wire
Ignition Ground
Lead
Assemble and Adjust the Throttle Cable.
1. Insert the throttle-cable housing
into the notch on the fan cover, and
clamp the black wire’s connector
between the fan cover and the
outer cable adjuster nut.
See Figure 10.
2. Tighten the two throttle cable
adjuster nuts.
IMPORTANT!
Adjust and tighten the cable nuts to
allow approximately 1/4-inch freeplay
at the throttle trigger.
3. Using finger pressure only, connect
the black switch wire from the
cable tube to the red ignition wire
on the powerhead. Wire routing
must be as shown in the illustration
with the black wire located away
from the throttle cable and carbure-
tor linkage.
4. Reinstall the engine cover and
tighten the captive engine cover
screw. Re-install the lower engine
cover screws.
5. Reinstall the spark plug boot.
CAUTION!
Routing of wiring must not inter-
fere with throttle operation.
Figure 10
Reinstall the Spark
Plug Cap
Red Wire
24
10-Hour Maintenance
10/15-Hour Maintenance
Clean the spark plug and
check the gap at the
electrode.
Figure 25
23021
Loosen
Knob
Figure 24
Every 10 hours of operation (more
frequently in dusty or dirty conditions):
Remove the air cleaner element. See
figure 24. Clean or replace as neces-
sary. To clean element: Wash it
thoroughly in soap and water. Let it
dry before reinstalling the element.
CAUTION!
Do not operate the unit if the air
cleaner or element is damaged,
or if the element is wet.
Every 10 to 15 hours of operation:
Remove and clean the spark plug. Adjust
the spark plug electrode gap to 0.024-
inch (0.6 mm). If the spark plug must be
replaced, use only a Champion CJ8 or
equivalent spark plug of the correct
heat range. (For electro magnetic
compliance (EMC) use a NGK BMR6A
resistor plug.) See Figure 25.
CAUTION!
Before removing the spark plug,
clean the area around the plug to
prevent dirt and debris from falling
into internal engine parts.
Remove and clean
or replace
the element

14
23008
About 10 inches
Outer Tube
Handle
2 Screws
(M5 x 45 mm)
2 Screws
(M5 x 30 mm)
Nut
Connect the Handle to the Outer Tube.
1. Position the handle on the outer
tube as shown.
2. Gently press the handle onto the
outer tube.
3. Install the 30 mm screws securing
the handle (30mm [1-in.] upper,
45mm [1.7-in.] lower). Tighten
finger-tight ONLY at this time.
NOTE:
The screws and nuts are packed in the
tool kit.
4. Locate the handle in the best
position for operator comfort
(usually about 10 inches ahead of
the throttle lever).
5. Secure the handle by alternately
tightening the four socket-head
screws in a diagonal or “criss-
cross” fashion.
Handle
Assembly
Figure 11
23
General Maintenance
Daily Maintenance
Prior to each work day, perform the
following:
■Remove all dirt and debris from the
engine, check the cooling fins and
air cleaner for clogging, and clean
as necessary.
■Carefully remove any accumulations
of dirt or debris from the muffler and
fuel tank. Dirt build-up in these areas
can lead to engine overheating, fire,
or premature wear.
■Check for loose or missing screws or
components. Make sure the cutting
attachment is securely fastened.
■Check the entire unit for leaking
fuel or grease.
Muffler
This unit must never be operated with a
faulty or missing spark arrestor or
muffler. Always make sure the muffler is
tightly secured and in good condition. A
worn or damaged muffler is a fire
hazard and may also cause hearing loss.
Spark Plug
Keep the spark plug and wire connec-
tions clean and tight.
Fasteners
Make sure nuts, bolts, and screws
(except carburetor adjusting screws)
are tight.
IMPORTANT!
MAINTENANCE, REPLACEMENT
OR REPAIR OF EMISSION CON-
TROL DEVICES AND SYSTEMS
MAY BE PERFORMED BY ANY
REPAIR ESTABLISHMENT OR
INDIVIDUAL; HOWEVER, WAR-
RANTY REPAIRS MUST BE PER-
FORMED BY A DEALER OR SER-
VICE CENTER AUTHORIZED BY
SHINDAIWA KOGYO CO., LTD. THE
USE OF PARTS THAT ARE NOT
EQUIVALENT IN PERFORMANCE
AND DURABILITY TO AUTHO-
RIZED PARTS MAY IMPAIR THE
EFFECTIVENESS OF THE EMIS-
SION CONTROL SYSTEM AND MAY
HAVE A BEARING ON THE OUT-
COME OF A WARRANTY CLAIM.
WARNING!
Before performing any mainte-
nance, repair or cleaning work on
the unit, make sure the engine and
cutting attachment are completely
stopped. Disconnect the spark
plug wire before performing
service or maintenance work.
WARNING!
Non-standard parts may not
operate properly with your unit and
may cause damage and lead to
personal injury.
NOTE:
Using non-standard replacement
parts could invalidate your Shindaiwa
warranty.

15
1. Align the cutting attachment shield
under the flange as shown
2. Tighten the three screws finger-
tight ONLY at this time.
3. Secure the cutting attachment
shield by alternately tightening the
three screws.
Install the Cutting Attachment Shield on the Outer Tube.
CAUTION!
Attach the screws “finger-tight”
before final tightening.
Carefully inspect the cutting
attachment shield installation to
make sure it is tightened securely
and does not wobble. DO NOT
OPERATE THE F230 WITHOUT
THE CUTTING ATTACHMENT
SHIELD IN PLACE AND
TIGHTLY SECURED!
Screw
(3 used)
Flange
Cutting Attachment
Shield
Cutting Attachment Shield
WARNING!
Figure 12
Assembly
22
Your Shindaiwa F230 Grass Trimmer
may be equipped with one of several
Shindaiwa trimmer head models, each
with features for specific applications
and/or operational requirements.
NOTE:
For proper operation, always refer to
the instructions accompanying the
trimmer head being used.
Available trimmer head styles include:
■Semi-automatic. Trimmer line is
indexed when the operator taps the
trimmer head on the ground during
operation.
■Manual. The operator indexes line
manually with the grass trimmer
stopped.
Cutting Grass
Trimming and Mowing Grass
Hold the grass trimmer so the
trimmer head is angled slightly into
the area to be cut. To ensure maxi-
mum trimmer-line service life, cut only
with the tip of the trimmer line. Cut
grass by swinging the unit’s trimmer
head from left to right. Keep the
trimmer head horizontal.
Edging
Tilt the handle about 100°to the left
(from horizontal) and move forward,
holding the trimmer vertically.
CAUTION!
Do not push the rotating line into
trees, wire fences, or any material
that could tangle or break line ends.
CAUTION!
Operation at low RPM can lead to
premature clutch failure.
Figure 22
Figure 23
Engine Operating Speeds
Operate the unit at full throttle while
cutting grass.

16
Mount the Trimmer Head.
Your F230 Grass Trimmer
should now be completely
assembled.
1. Turn the unit over so the shaft from
the gearcase faces up. Remove the
plastic protector from the shaft.
2. Slip the trimmer head holder onto
the gearcase shaft.
3. Rotate the trimmer head holder
until the notch on its skirt aligns
with the hole in the gearcase, then
insert the long end of the hex
wrench into the hole (the wrench
prevents the gear shaft from
rotating while the trimmer head is
being installed).
4. While holding the hex wrench, fit
the trimmer head onto the holder
and thread it in place.
IMPORTANT!
The trimmer head has a right-hand
thread, so turn it clockwise to install.
5. Remove the hex wrench.
Trimmer Head
Remove
Protector
Align
Notches
Position
Tool Holder Install Trimmer Head
Hex
Wrench
Figure 13
Assembly
The F230 Grass Trimmer should
NEVER be operated with a blade-
type attachment.
WARNING!
21
NEVER operate the unit with the
cutting attachment shield or other
protective devices (ignition switch
etc.) removed!
WARNING!
A cutting attachment shield or
other protective device is no
guarantee of protection against
ricochet. YOU MUST ALWAYS
GUARD AGAINST FLYING
DEBRIS!
Use only authorized Shindaiwa parts
and accessories with your Shindaiwa
trimmer. Do not make modifications
to your unit without the written
approval of Shindaiwa, Inc.
ALWAYS make sure the tool is
properly installed and firmly tight-
ened before operation.
NEVER use a cracked or warped
cutting attachment: replace it with a
serviceable one.
ALWAYS make sure the cutting
attachment fits properly into the
appropriate attachment holder. If a
properly installed attachment
vibrates, replace the attachment with
a new one and re-check.
ALWAYS stop the engine immedi-
ately and check for damage if you
strike a foreign object or if the unit
becomes entangled. Do not operate
with broken or damaged equipment.
NEVER allow the engine to run at
high RPM without a load. Doing so
could damage the engine.
NEVER operate a unit with worn or
damaged tools or tool holder.
Checking Unit Condition Shoulder Strap
Adjust the shoulder strap so the pad
rests comfortably on the off-side
shoulder with the cutting attachment
parallel to the ground. Make sure all
hooks and adjustment devices are
secure.
NOTE:
Although a shoulder strap accessory
is not required for use with 230 grass
trimmers, a shoulder strap can
increase operator comfort during
extended periods of operation.
See Figure 21.
Optional Accessories
Figure 21
Shoulder Strap ....... P/N 22410-17202
Hangar ................... P/N 22410-12210
Hangar Bolt ............ P/N 01020-05120
Hangar Nut............. P/N 01500-05041
Spacer .................... P/N 22035-14130

17
WARNING!
Minimize the risk of fire!
■Stop engine before refueling.
■Always allow the engine to
cool before refueling!
■Wipe all spilled fuel and move
the engine at least 10 feet (3
meters) from the fueling point
and source before restarting!
■Never smoke or light any fires
near the engine or fuel
source!
■Never place any flammable
material near the engine
muffler!
■Never operate the engine
without the muffler and spark
arrester in good working
condition.
IMPORTANT!
Mix only enough fuel for your immedi-
ate needs! If fuel must be stored
longer than 30 days and oil with
fuel stabilizer is not used, it should
first be treated with a fuel stabilizer
such as StaBil™.
Filling the Fuel Tank
1. Place the trimmer on a flat, level
surface.
2. Clear any dirt or other debris from
around the fuel filler cap.
3. Remove the fuel cap, and fill the
tank with clean, fresh fuel.
4. Reinstall the fuel filler cap and
tighten firmly.
Mixing Fuel
CAUTION!
This engine is designed to operate
on a 50:1 mixture consisting of
unleaded gasoline and 2-cycle
mixing oil only. Use of non-
approved mixing oils can lead to
excessive carbon deposits.
CAUTION!
Some types of gasoline contain
alcohol as an oxygenate. Oxygen-
ated gasoline may cause in-
creased operating temperatures.
Under certain conditions, alcohol-
based gasoline may also reduce
the lubricating qualities of some 2-
cycle mixing oils. Never use any
type of gasoline containing more
than 10% alcohol by volume!
Generic oils and some outboard
oils may not be intended for use in
high-performance 2-cycle type
engines, and should never be
used in your Shindaiwa engine.
■Use only fresh, clean unleaded
gasoline with a pump octane of 87
or higher.
■
Mixed with 50:1 Shindaiwa Premium
2-cycle mixing oil or with an equivalent
high quality 2-cycle mixing oil.
Examples of 50:1 mixing quantities
■ 1 gallon of gasoline to 2.6 oz. mixing oil
■ 5 litres of gasoline to 100 ml. mixing oil
20
Idle the engine briefly before stopping
(about 2 minutes), then slide the
ignition switch to the “O” (engine
OFF) position.
Stopping the Engine Adjusting Engine Idle
Idle Adjusting
Screw
Figure 19 Figure 20
23016
The engine must return to idle speed
whenever the throttle lever is re-
leased. Idle speed is adjustable, and
must be set low enough to permit the
engine clutch to disengage the cutting
attachment.
Idle Speed Adjustment
1. Place the trimmer on the ground,
then start the engine, and then
allow it to idle 2-3 minutes until
warm.
2. If the attachment rotates when the
engine is at idle, reduce the idle
speed by turning the idle adjust-
ment screw counter-clockwise.
See Figure 20.
3. If a tachometer is available, the
engine idle speed should be final
adjusted to 2,750 (±250) rpm (min-1).
4. Carburetor fuel mixture adjust-
ments are preset at factory and
cannot be serviced in the field.
WARNING!
The cutting attachment must
NEVER rotate at engine idle! If the
idle speed cannot be adjusted by
the procedure described here,
return the trimmer to your Shin-
daiwa dealer for inspection.

18
Starting the Engine
4. While holding the outer tube firmly
with one hand, slowly pull the
recoil starter handle until resis-
tance is felt, then pull quickly to
start the engine.
1. Slide the ignition switch to the “I”
position (engine ON).
2. Press the primer bulb until fuel can
be seen flowing in the transparent
return tube.
3. Set the choke lever to the CLOSED
position if engine is cold.
Make sure the
cutting head
is clear of
obstructions!
Primer Bulb
Return Tube
IMPORTANT!
Engine ignition is controled by a two position switch mounted on the throttle
housing labeled, "I" for ON or START and "O" for OFF or STOP.
Figure 14 Figure 16
Figure 15 Figure 17
Closed
IMPORTANT!
The primer system only pushes fuel
through the carburetor. Repeatedly
pressing the primer bulb will not flood
the engine with fuel.
CAUTION!
Do not pull the recoil starter to
the end of the rope travel. Pulling
the recoil starter to the end of the
rope travel can damage the
starter.
23013
23011
19
23015
Starting the Engine (continued)
WARNING!
Never start the engine from the
operating position.
WARNING!
The cutting attachment may rotate
when the engine is started!
When the Engine Starts...
■After the engine starts, allow the
engine to warm up at idle 2 or 3
minutes before operating the unit.
■After the engine is warm, pick
up the unit and clip on the harness
if so equipped. See page 21.
■Advancing the throttle makes the
cutting attachment turn faster;
releasing the throttle permits the
attachment to stop turning. If the
cutting attachment continues to
rotate when the engine returns to
idle, carburetor idle speed should
be adjusted (see the next page).
IMPORTANT!
If the engine fails to start after several
attempts with the choke in the closed
position, the engine may be flooded
with fuel. If flooding is suspected,
move the choke lever to the open
position and repeatedly pull the recoil
starter to remove excess fuel and start
the engine. If the engine still fails to
start, refer to the troubleshooting
section of this manual.
5. When the engine starts, slowly
move the choke lever to the
"OPEN" position. See Figure 18.
(If the engine stops after the initial
start, close the choke and restart.)
Figure 18
Open