Shindaiwa X7502831600 User Manual
SHINDAIWA OWNER’S/OPERATOR’S MANUAL
C344 BRUSHCUTTER
X7502831600
06/10
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.
Introduction
50FEET
(15m)
HOT SURFACE
The Shindaiwa H4 series of hand-held
power equipment is designed and built
to deliver superior performance and
reliability without compromise to quality,
comfort, safety or durability. Shindaiwa
engines represent the leading edge of
high-performance engine technology,
delivering exceptionally high power
with remarkably 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.
Echo, Inc. reserves the right to make
changes to products without prior
notice, and without obligation to
make alterations to units previously
manufactured.
WARNING!
The engine exhaust from
this product contains chemicals
known to the State of California
to cause cancer, birth defects or
other reproductive harm.
Contents
PAGE
Safety ................................................... 3
Product Description .............................. 5
Specications ....................................... 5
Emission Control .................................. 6
Assembly .............................................. 6
Mixing fuel .......................................... 10
Filling the fuel tank...............................11
Starting the Engine ............................ 12
Stopping the Engine ........................... 13
Checking Unit Condition ..................... 13
Operation ............................................ 13
Maintenance ....................................... 16
Long Term Storage ............................. 21
Troubleshooting Guide ....................... 22
Warranty ............................................. 25
PAGE
IMPORTANT!
The operational procedures described in this manual are intended to help you get the most from this unit 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 H4 series hand-held
power equipment, or if you do not understand something in this manual, contact Shindaiwa at the address printed on the back of
this Manual.
Attention Statements
Throughout this manual are special
“attention statements”.
DANGER!
A statement preceded by
the triangular attention symbol and
the word “DANGER” contains information that should be acted upon to
prevent serious injury or death.
A statement preceded by the word
“IMPORTANT” is one that possesses
special signicance.
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.
IMPORTANT!
CAUTION!
A statement preceded by the
word “CAUTION” contains information that should be acted upon
to prevent mechanical damage.
NOTE:
A statement preceded by the word
“NOTE” contains information that is
handy to know and may make your job
easier.
Warning and Operational Labels
Read and follow this operator's
manual. Failure to do so could
result in serious injury..
Wear eye and hearing protection at all times during operation
of this unit. Wear head protection where there is a risk of falling objects.
Make sure no one is within
15 M / 50 feet of an operating
machine.
2
Beware of thrown or richocheted
objects
DO NOT operate this unit
with a blade unless the unit is
equipped with a Shindawiaapproved handlebar or barrier.
WARNING: Surface can be hot.
Always wear gloves when handling
this unit.
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.
Safety
HOT SURFACE
Work Safely
Trimmers and brushcutters 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 this
unit!
WARNING!
Never make unauthorized
attachment installations.
Stay Alert
You must be physically and mentally t
to operate this unit safely.
WARNING!
Use Good Judgment
WARNING!
Never operate power equipment of
any kind if you are tired or if you
are under the inuence of alcohol,
drugs, medication or any other substance that could affect your ability
or judgement.
ALWAYS inspect unit before each
use. Replace any damaged parts.
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 stop the unit immediately if
it suddenly begins to vibrate or shake.
Inspect for broken, missing or improperly installed parts or attachments.
Safety Labels
NEVER extend trimming line beyond
the length specied for your unit.
ALWAYS keep the unit as clean as
practical. Keep it free of loose vegetation, mud, etc.
ALWAYS hold the unit rmly with both
hands when cutting or trimming, and
maintain control at all times.
ALWAYS use the proper cutting tool
for the job.
ALWAYS keep the handles clean.
ALWAYS disconnect the spark plug
wire before performing any maintenance work.
ALWAYS, if a saw blade should bind
fast in a cut, shut off the engine immediately. Push the branch or tree to
ease the bind and free the blade.
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.
3
Safety (continued)
The Properly Equipped Operator
Wear hearing protection devices and a
broad-brimmed hat or helmet. A helmet
is required when using a blade-equipped
brushcutter to clear small trees.
Prolonged exposure to excessive noise
is fatiguing and could lead to impaired
hearing.
Wear close-tting 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!
Long-term exposure to vibration
can damage your hands.
Keep a proper footing and do not
overreach. Maintain your balance at all
times during operation.
Wear appropriate footwear (non-skid
boots or shoes): do not wear opentoed shoes or sandals. Never work
barefooted!
Always wear eye protection such as
goggles or safety glasses to shield
against thrown objects.
Always wear a harness when operating the unit .
It adds comfort and helps ensure safety by limiting
movement fore and aft. When the harness is
adjusted properly, the unit should balance with the
cutting attachment parallel to the ground.
Always operate with both hands
rmly gripping the unit.
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 handlebar
is installed in accordance with the
manufacturers instructions.
Always make sure
the appropriate cutting
attachment shield is correctly
installed and in good
condition. Do not
operate the unit if the
cutting attachment
shield is missing,
loose, or broken.
Keep away from the rotating
trimmer line or blade at all
times, and never lift a moving
attachment above waist-high.
Be Aware of the Working Environment
Avoid long-term
operation in very hot
or very cold weather.
Be extremely careful
of slippery terrain,
especially during rainy
weather.
Be constantly alert for
objects and debris that
could be thrown either
from the rotating cutting
attachment or bounced
from a hard surface.
If contact is made with a hard object,
stop the engine and inspect the cutting
Make sure
bystanders
or observers
outside the
15 meter (50
feet) “danger
zone” wear eye
protection.
Always make sure
the appropriate
cutting attachment
shield is correctly
installed.
attachment for damage.
Reduce the risk of bystanders
being struck by ying debris. Make
sure no one is within 15 meters
(50 feet)— that’s about 16 paces
of an operating attachment. Stop
immediately if a child, pet, or
person comes within a 15 meter
(50 feet)radius. Outside this radius,
there is still a risk of injury from
Do not operate the unit
if the cutting attachment
shield is missing, loose,
15 METERS
(50 FEET)
blade when brushcutting or
can injure while it continues
ALWAYS clear your work area of
trash or hidden debris that could
be thrown back at you or toward
a bystander. When operating in
rocky terrain or near electric wires
or fences, use extreme caution to
avoid contacting such items with
the cutting attachment.
thrown objects.
or broken.
Beware of a coasting
edging. A coasting blade
to spin after the throttle
trigger is released or after
the engine is stopped.
4
Product Description
Using the illustration as a guide,
familiarize yourself with your
machine and its various components. Understanding your
machine helps ensure top performance, long service life and safer
operation.
Throttle Lock
Button
Throttle
Trigger
Ignition
Switch
Throttle Interlock
Hanger
Gearcase
Outer Tube
Cutting Attachment
Shield
Handle
Shoulder
Strap
Grip
WARNING!
Hip Pad
Do not make unauthorized
modications or alterations to any of
these units or their components.
Specications
Engine Name C344
Engine Type 4-cycle, vertical cylinder, air cooled
Dry Weight (Without guard and strap) 7.16 kg/15.8 lb.
Bore x Stroke 38 x 30 mm / 1.49 x 1.18 in.
Displacement 34 cc/2.07 cu. in.
Fuel/Oil Ratio 50:1 with *ISO-L-EGD or JASO FD class engine oil
Fuel Tank Capacity 700 ml/23.7 oz.
Carburetor Type Diaphragm-type
Ignition One-piece electronic, program-controlled
Spark Plug** NGK CMR5H
Plug Gap 0.6 mm / 0.024 inch
Torque 16.7 - 18.6 N∙m / 148 -165 in • lbs
Air Cleaner Type Foam pre-lter; sealed felt main lter
Starting Method Recoil
Stopping Method Slide switch
Transmission Type Automatic, centrifugal clutch w/bevel gear
Engine Idle Speed 3,000 RPM
Clutch Engagement Speed 4,500 RPM
Wide Open Throttle Speed (W.O.T.) 10,500 RPM
Fuel
Tank
Specications are subject to change without notice.
5
Handlebar and Throttle assemblyŶ
Outer tube
Lower cap
retaining
screws
Handlebar
Ignition switch
Throttle
trigger
Hanger
Mounting the brushcutter handlebar
Handle positioning
label
Bands
This unit comes fully assembled with the
exception of the cutting attachment shield
and cutting attachment.
Prior to Assembly
Before assembling, make sure you have all
the components required for a complete
unit and inspect unit and components for
any damage.
Engine and shaft assembly
Ŷ
Cutting attachment shieldŶ
Cutting attachmentŶ
Kit containing cutting attachment Ŷ
shield, mounting bracket and hardware,
this owner’s/operator’s manual and tool
kit for routine maintenance. Tool kits
vary by model and may include a spark
plug/screwdriver combination wrench,
and a scraper.
Emission Control (Exhaust & Evaporative)
EPA 2010 and Later and/or C.A.R.B. TIER III
The emission control system for the engine is EM/TWC (Engine Modication and 3-way Catalyst) and for the fuel tank
the Control System is EVAP (Evaporative Emissions) or N (for nylon tank). Evaporative emission may be applicable to
California models only.
An Emission Control Label is located on the unit. (This is an EXAMPLE ONLY; information on label varies by en-
gine FAMILY).
PRODUCT EMISSION DURABILITY (EMISSION COMPLIANCE PERIOD)
The 300 hour emission compliance period is the time span selected by the manufacturer certifying the engine
emissions output meets applicable emissions regulations, provided that approved maintenance procedures are
followed as listed in the Maintenance Section of this manual.
Assembly
This unit comes fully assembled with
the exception of the handlebar, cutting attachment shield and cutting
attachment.
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.
Prior to Assembly
Before assembling, make sure you
have all the components required for
a complete unit and inspect unit and
components for any damage.
Engine/Outer tube assembly
■
Handlebar and Throttle assembly ■
Cutting attachment shields ■
■
Cutting Attachment
Shoulder Strap w/Hip Pad ■
Cutting attachment shield mounting ■
brackets and assembly hardware
Cutting attachment adapter plates
■
4 mm hex key wrench (Also use as ■
a locking tool)
T-wrench
■
Handlebar Assembly
Install the handlebar:
Remove four (4) upper cap retaining 1.
screws, and remove upper cap from
handlebar mounting bracket.
Place handlebar on mounting 2.
bracket, and secure with upper cap
and four (4) screws.
Adjust handlebar position for best 3.
operator comfort and control, then
tighten upper and lower cap retaining screws securely.
Secure cable to outer tube with two 4.
(2) bands provided.
Throttle lock
button
Throttle
Assembly
Throttle interlock
Handle bar
Upper cap
retaining screws
Upper
cap
Lower cap
6
Assembly (continued)
Throttle Linkage and Ignition
Leads
Adjust throttle trigger free play
The throttle trigger free play should
be approximately 4 - 6 mm (3/16”
- 1/4”). Make sure that the throttle
lever operates smoothly without
binding.
Loosen the air cleaner cover 1.
knob(s) and remove the air cleaner
cover.
Place throttle linkage (A) through 2.
adjustment xture (B) and install
wire end into large carburetor throttle swivel hole (C). Check throttle for
freedom of movement and that wide
open throttle / low idle extremes are
adjusted properly.
4-6 mm
(3/16”-1/4”)
Throttle Free Play
Throttle trigger free play
Turn the cable adjuster in or out as 3.
required to obtain proper free play 4
- 6 mm (3/16 - 1/4 in.).
Connect 2 ignition stop leads from 4.
throttle cable tubing to 2 ignition
leads on engine.
Reinstall the air cleaner cover.5.
Cable
Adjuster
Remove air cleaner cover
B
A
C
Install Cutting Attachment Shield
CAUTION
Wear Gloves or personal injury may result:
• Cutoff knife is sharp.
• Gearcase and surrounding area may be hot.
Tools Required: Screwdriver
Parts Required: Plastic debris shield, shield plate, (3) 5 x 10 mm screws
NOTE
The plastic shield is for use with the Nylon Line Head only. Install Metal Shield
when using plastic or metal blades.
1. Remove plastic threaded shaft sleeve and adapter plate (C) from PTO
shaft (A).
2. Place the shield on the bottom of the bearing housing ange.
3. Place shield plate (B) on shield, align holes. Install three (3) screws from
bottom through plate and shield into gear case.
A
B
C
7
Assembly (continued)
Install trimmer head
Tools required: 4 mm hex key wrench (locking tool)
Parts required: adapter plate, trimmer head
NOTE
Use the 4 mm hexagonal wrench as a gear housing locking tool.
1. Assemble adapter plate (C) onto PTO shaft.
2. Align locking hole in adapterr plate with notch in edge of gear housing
and insert head locking tool (D).
3. Thread line head (E) onto shaft by turning it counter-clockwise until head
is tight against adapter plate (C).
4. Remove locking tool (D).
IMPORTANT
Semi-automatic nylon line heads must be used only with plastic debris shield with
cut-off knife. Using nylon line heads with metal debris shield can result in trimmer
damage, caused by operation with excessive line length.
D
A
C
To advance trimmer line
Tip:
To advance trimmer line, tap trimmer head against the ground while the head is
turning at normal operating speed.
Nylon line replacement
See Maintenance Section for Loading Trimmer Line.
Remove nylon line head
NOTE
Do not disassemble nylon line head.
1. Align locking hole in upper plate with notch in edge of gear housing and insert head locking tool (D).
2. Remove line head (E) by turning it clockwise until head is completely off of shaft.
3. Remove locking tool (D).
Blade Installation
WARNING!
You must install the U-Handle and all Blade Conversion parts shown in the following instructions before operating this
unit with a metal blade, otherwise serious injury may result.
D
E
NOTE
Model C344 includes U-Handle, and necessary blade conversion parts. Blades are not provided with trimmer/brushcutters
and must be selected for type of cutting being performed.
Install Metal Shield
Tools Required: 8 x 10 mm Open-end Wrench, Screwdriver, 17x19 mm Wrench,
Locking Tool
Parts Required: Metal Shield, Shield Bracket,
3 - 5 x 10 mm screws w/captivated at and lock-
washer, (metal shield to gear housing).
2 - 5 x 8 mm screws, 2 - 5 mm nuts, 2 - 5 mm lock-
washers, (bracket to shield).
2 - 5 mm nuts, 2 - 5 mm lockwashers
(Bracket to Gear Housing)
8
Assembly (continued)
1. If installed remove nylon line head, upper xing plate, shield plate, and plastic
shield:
a. Align locking hole in upper plate with notch in edge of gear housing and
insert head locking tool (A).
b. Remove line head (B) by turning it clockwise until head is completely off of
shaft.
c. Remove locking tool.
C
A
B
d. Remove three screws holding shield plate (E) and plastic shield (C) to gear
housing.
e. Retain line head (B), adapter plate (D), shield plate, and plastic shield
(C).
2. Loosely attach bracket (I) to shield (J) and attach shield to bottom of gear
housing (F) with hardware provided.
3. Tighten all shield hardware.
C
E
D
F
I
J
9
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