Shindaiwa 6850-9430 Owner's manual

1
SHINDAIWA OWNER’S/OPERATOR’S MANUAL
GP3410 WATER PUMP
Minimize the risk of injury to yourself and others!
Read this manual and familiarize yourself with its
contents! Always wear eye and hearing protection
when operating this unit.
WARNING!
Part Number 68510-94310 Rev 3/07

2
WARNING!
Do not make unauthorized
modications or alterations to this unit or
any of its components or accessories.
WARNING!
A statement preceded by
the word “WARNING” contains infor-
mation that should be acted upon to
prevent serious bodily injury.
Read and follow this Owner’s/
Operator’s Manual. Failure to do
so could result in serious injury.
Wear eye and hearing protection
at all times during the operation of
this unit.
Do not operate this unit if you are
tired, ill, or under the inuence of
alcohol, drugs, or medicine.
Throughout this manual are special atten-
tion statements.
CAUTION!
A statement preceded by the word
“CAUTION” contains information that
should be acted upon to avoid dam-
aging the unit.
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 this unit, and 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 GP3410, 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.
Contents
Introduction
Attention Statements..............................2
General Safety Instructions...................3
Unit Description.....................................4
Specifications..........................................5
Installing Hoses......................................6
Priming the Pump..................................7
Mixing Fuel.............................................7
Filling the Fuel Tank..............................7
Starting Procedure.................................8
Checking/Adjusting Engine Idle .........9
Operating Tips........................................9
Maintenance .........................................10
Spark Arrester Maintenance...............13
Long Term Storage..............................13
Troubleshooting...................................14
Warranty................................................19
This Shindaiwa GP3410 water pump has
been designed and built to deliver superior
performance and reliability without compro-
mise to quality, comfort, or durability.
Shindaiwa high performance engines repre-
sent the leading edge of 4-cycle engine tech-
nology, delivering exceptionally high power
at remarkably low displacement and weight.
As an owner/operator, you’ll soon discover
why Shindaiwa is simply in a class by itself!
IMPORTANT!
The information contained in this manual
describes units available at the time of pro-
duction. While every attempt has been
made to give you the very latest information
about your Shindaiwa GP3410 water pump,
there may be some differences between
your pump and what is described here.
Shindaiwa Inc. reserves the right to make
changes in production without prior notice,
and without obligation to make alterations
to units previously manufactured.
PAGE
IMPORTANT!
A statement preceded by the word
“IMPORTANT” is one that possesses spe-
cial significance.
WARNING!
The engine exhaust from
this product contains chemicals
known to the State of California to
cause cancer, birth defects or other
reproductive harm.
To avoid water pump damage,
ll priming port with water
before use.

3
WARNING!
Never make unauthorized
attachment installations.
NEVER smoke or light res near the unit.
ALWAYS stop the engine and allow
it to cool before refueling. Avoid
overlling and wipe off any fuel that
may have spilled.
ALWAYS inspect the unit for fuel leaks
before each use. During each rell,
check that no fuel leaks from around
the fuel cap and/or fuel tank. If fuel
leaks are evident, stop using the
unit immediately. Fuel leaks must be
repaired before using the unit.
ALWAYS move the unit to a place well
away from a fuel storage area or other
readily ammable materials before
starting the engine.
NEVER place ammable material
close to the engine mufer.
NEVER run the engine without the
spark arrester screen in place.
NEVER operate the engine when
transporting the unit.
NEVER operate the engine indoors!
Make sure there is always good ven-
tilation. 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 improp-
erly installed parts.
ALWAYS keep the unit as clean as
practical. Keep it free of loose vegeta-
tion, mud, etc.
ALWAYS disconnect the spark plug wire
before performing any maintenance work.
Never operate power equipment
of any kind if you are tired or if you
are under the inuence of alcohol,
drugs, medication or any other sub-
stance that could affect your ability
or judgement.
Pumps 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!
You must be physically and mentally fit to
operate this unit safely.
General Safety Instructions
Work Safely
Stay Alert WARNING!
Minimize the Risk of Fire
WARNING!
Use Good Judgment
WARNING!
Safety labels
IMPORTANT!
Safety and Operation Information Labels:
Make sure all information labels are undam-
aged and readable. Immediately replace dam-
aged or missing information labels. New
labels are available from your local authorized
Shindaiwa dealer.

4
Unit Description
Fuel Filler
Cap
Spark Plug
Recoil Starter
Handle
Air Cleaner
Choke
Throttle
Lever
Discharge
Connection
Handle
Fuel Tank
Stop Switch
Suction
Connection
Filler Plug
Mufer
Drain
Plug
Using the illustrations above as a guide,
familiarize yourself with this unit and its
various components. Understanding the
unit helps ensure top performance, long
service life, and safer operation.
Discharge
Connection
Filler Plug
Fuel Tank
Figure 1A
GP3410
Priming Port
Priming
Port
Specications
Model GP3410
Engine Type 4 cycle air-cooled gasoline engine, vertical cylinder
Displacement 34 cc (38mm x 30mm); 2.07 cu. in. (1.50 x1.18 in.)
Maximum Output 1.0 kw/1.4 HP @ 8000 min-1
Fuel/Oil Ratio 50:1 with Shindaiwa 2-cycle mixing oil
Carburetor Walbro rotary type with primer bulb
Ignition PCI
Spark Plug NGK CMR5H
Starting Recoil starter
Stopping Push button
Fuel tank capacity 20.0 oz. (0.6 liter)
Weight 15.6 pounds (7.1 kg)
PUMP
Type General purpose, centrifugal, self-priming
Suction Diameter 1.0 inches (25mm)
Discharge Diameter 1.0 inches (25mm)
Maximum Suction Head (vertical lift) 26.25 feet (8 meters)
Maximum Total Pump Head 164 feet (50 m)
Maximum Pump Discharge 34.3 gal/min (130 liters/min)

5
Prior to Assembly
Before assembling this unit, make sure
you have all the components required for
a complete unit:
GP3410 engine-driven pump
Spark plug wrench


Assembly
Spanner
3mm Hex Wrench
4mm Hex Wrench



Install the Suction and Discharge Hoses
Assemble a barbed hose fitting, ring
nut, and gasket as shown, and thread
the completed hose fitting assembly
onto the pump suction port. Assemble
the remaining hose fitting to the pump
discharge port.
Push a 1.0" suction hose (not provided)
over the suction hose fitting on the pump
body, and secure with a 1.0" hose clamp as
shown. Working at the opposite end of the
suction hose, use a second 1.0" hose clamp
to install and secure the suction strainer.
Submerge the suction hose strainer in
the water source. For maximum per-
formance, avoid placing the strainer
directly in heavy accumulations of
leaves, silt, or other debris.
1.
2.
3. IMPORTANT!
Place the pump as close to the water
source as possible. Increases in suction
lift will lower pump performance. Do not
exceed maximum suction head of 26 feet.
CAUTION!
This pump is intended for pumping
fresh water only.
Ingested debris can damage the
pump impeller and seals.
Never operate the pump if the
strainer is missing or damaged.
Suction
Hose
Suction
Strainer
Hose Clamp
Barbed Hose
Fitting
Hose Clamp
Ring Nut
Gasket
Suction Port
Discharge Port
Install the discharge hose (not pro-
vided) and secure with the remaining
1.0" hose clamp.
Recheck that both the suction and dis-
charge hoses are free from obstruc-
tions, and that all connections are
tightly secured.
4.
5.
Figure 1B
Priming Port
Parts bag including:
1.0" hose clamps (3 each)
hose fittings and gaskets (2 each)
strainer

●
●
●
Priming
Before the pump can develop suction
or “lift” at the water source, the pump
impeller must first be primed by filling
the pump housing with water. Once the
GP3410 has been primed, additional prim-
ing should be required only if the pump
has been drained or otherwise emptied.
Remove the filler plug at the top of the
pump housing. Use care not to lose the
sealing ring beneath the filler plug.
1.
Filler Plug
CAUTION!
Never allow the pump to run dry!
Operation without water can perma-
nently damage the pump seals.
Fill the pump housing through the
priming port (Figure 2) with clean
water until water overflows from the
filler plug hole on the pump body.
Replace and securely tighten the filler
plug.
2.
3.
Figure 2
Priming port
Sealing ring
IMPORTANT!
A damaged or missing filler plug seal may
allow air to leak into the pump housing.
Air leakage can lower performance!

6
Mixing Fuel Example of 50:1 mixing
quantites
IMPORTANT!
Mix only enough fuel for your immediate
needs! If fuel must be stored longer than
30 days and Shindaiwa oil with fuel
stabilizer is not used, it should first be
treated with a fuel stabilizer such as
StaBil™.
CAUTION!
Never use any fuel containing more
than 10% alcohol by volume. Some
gasolines contain alcohol as an oxy-
genate! Oxygenated fuels may cause
increased operating temperatures.
Under certain conditions, alcohol-
based fuels may also reduce the lubri-
cating qualities of some mixing oils.
Generic oils and some outboard
motor oils may not be intended
for use in high-performance air-
cooled 4-cycle and 2-cycle engines,
and should never be used in your
Shindaiwa engine!
CAUTION!
This engine is designed to oper-
ate on a 50:1 mixture consisting of
unleaded gasoline and a premium
2-cycle mixing oil only. Use of non-
approved mixing oils can lead to
excessive maintenance costs and/or
engine damage.
Use only fresh, clean unleaded gaso-
line with a pump octane rating of 87 or
higher.
Mix gasoline with 50:1 Shindaiwa
4 cycle or 2-cycle mixing oil or
with an equivalent high quality 2-cycle
mixing oil.


Filling the Fuel Tank
Place the unit on the ground or on a flat
surface.
Clear any dirt or other debris from
around the fuel filler cap.
Remove the fuel cap, and fill the fuel
tank with clean, fresh fuel mixture.
Replace and firmly tighten the fuel cap.
1.
2.
3.
4.
STOP the engine before refueling.
ALWAYS allow the unit to cool
before refueling!
Wipe all spilled fuel and move the
unit at least 10 feet (3 meters) from
the fueling point before restarting!
NEVER start or operate this unit if
there is a fuel leak.
■
■
■
■
NEVER start or operate this unit if
the carburetor, fuel lines, fuel tank
and/or fuel tank cap are damaged.
NEVER smoke or light any res near
the unit or fuels!
NEVER place any ammable mate-
rial near the engine mufer!
NEVER operate the engine without
the mufer and spark arrester in
place and properly functioning!
■
■
■
■
WARNING!
Minimize the risk of re!
Gasoline 2-cycle mixing oil
liters milliliters
2.5 - 1 50 ml
5 - 1 100 ml
10 - 1 200 ml
20 - 1 400 ml

7
IMPORTANT!.
The primer system only pushes fuel
through the carburetor. Repeatedly press-
ing 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.
Set throttle control lever to the half
open position. See Figure 3.
Press the primer bulb until fuel can be
seen flowing in the transparent return
tube. See Figure 4.
1.
2.
Starting the Engine
WARNING!
Never start the engine from
the operating position.
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.
After the engine starts, allow the
engine to warm up at idle 2 or 3 min-
utes before operating the unit.

When the Engine Starts
Ignition
Switch
Set the choke lever to the CLOSED
position if the engine is cold.
While holding the pump handle firmly
with your left hand, use your other
hand to slowly pull the recoil starter
handle until resistance is felt, then pull
quickly to start the engine.
3.
4.
When the engine starts, slowly move
the choke lever to the "OPEN" posi-
tion. See Figure 7. (If the engine stops
after the initial start, close the choke
and restart.)
When the engine starts, gradually
move the throttle control lever back to
the idle position (counterclockwise).
5.
6.
Figure 4
Figure 3
Figure 6
Open
Primer bulb
Return tube
Figure 5
Close
Figure 8
Figure 7
IMPORTANT!
To stop the GP3410 pump engine, push
the red ignition switch until the engine
completely stops. See Figure 8.
If the engine does not start
Repeat the appropriate procedures
for starting a warm or cold engine.
If the engine fails to starts, fol-
low the procedures in “Starting a
Flooded Engine”.
1.
2.

8
Adjusting Engine Idle
Idle Speed Adjustment
Place the unit on the ground and start
the engine, and then set throttle control
lever to idle postion. Allow engine to
idle 2-3 minutes until warm.
If a tachometer is available, the engine idle
speed should be adjusted to 3,000 (±300)
RPM (min-1).
1.
2.
IMPORTANT
A clean and unrestricted airflow is essen-
tial to your pump’s engine performance
and durability! Before attempting any car-
buretor adjustments, inspect and clean the
engine air filter as described in the Main-
tenance section of this manual.
NOTE
Carburetor fuel mixture adjustments are
preset at factory and cannot be serviced
in the eld.
Starting the Engine (continued)
Starting a ooded engine
Follow the starting procedures for a
warm engine.
If the engine still fails to start or fire,
refer to the troubleshooting chart at the
end of this manual.
5.
6.
CAUTION!
Incorrect spark plug installation can
result in serious engine damage!
Disconnect the spark plug lead, and
then use the spark plug wrench to
unscrew the spark plug (counter- clock-
wise to remove.) See Figure 9
If the spark plug is fouled or is soaked
with fuel, clean or replace the plug as
necessary. For spark plug specificia-
tions and gapping procedure, see the
Maintenance section.
While the spark plug is removed, crank
the engine several times to clear excess
fuel from the combustion chamber.
Replace the spark plug and tighten it firmly
with the spark plug wrench. If a torque
wrench is available, torque the spark plug
to 148-165 inch-lbs. (170-190 kg/cm).
1.
2.
3.
4.
Idle
Adjustment
Screw
Decrease Idle
Increase Idle
Figure 9
Figure 10

9
Burn danger/Danger from spilled
fuel! Always stop the pump engine
before transporting the pump. The
engine mufer and other components
may be very hot during or after pump
operation. Carry the pump by the han-
dle only. The pump must remain level at
all times.
Danger of Asphyxiation! This pump
is intended for outdoor use in well
ventilated areas only!
■
■
Danger from moving parts! The pump
rotor will rotate whenever the engine is
cranked or operated. Stop the engine
and disconnect the spark plug terminal
before performing any maintenance or
installations on this pump. Never oper-
ate this pump unless all covers and
shields are in place, and both the suc-
tion and discharge hoses are installed
and rmly connected to the pump.
■Explosion Hazard! Never attempt
to start or operate this pump in the
presence of explosive or combustible
materials!
Never attempt to transfer fuels or
other hazardous liquids with the
GP3410! This pump is designed
and warranted for pumping FRESH
WATER ONLY!
■
■
50
45
40
35
30
25
20
15
10
5
0 50 100 150 200 250 300
Operating Tips for Maximum Performance
Minimize friction by using the
correct 1.0" ID suction and discharge
hoses specified, with a minimum of
connections. Keep all hose runs as
short as possible.
Keep the suction head (vertical lift)
as short as possible. Do not exceed
the pump’s maximum suction head of
26 feet.
Avoid air leaks.
All suction-side connections must
be tightly secured.
Make sure the filler cap and drain
plug on the pump housing are
tight and free from leakage.
Protect the discharge hose from
crushing-type damage, especially
from motor vehicles.
Abrasive debris can damage the
pump impeller and seals, and should
be avoided.
To minimize clogging the strainer
when pumping near mud or debris,
place the strainer in a bucket or on a
bed of stones.
1.
2.
3.
a.
b.
4.
5.
6.
CAUTION!
Sudden pressure increases (such as
from vehicles driving on the discharge
hose) can split the discharge hose and
may also damage the pump body.
Keep all pets and bystanders away
from the pump during operation and
fueling.
Beware the pump may shift sud-
denly during operation, especially
when the hoses rst ll with water.
Do not wear loose clothing, jewelry,
or long hair that could get caught in
machinery.
■
■
■
Always wear eye protection such as
goggles or safety glasses.
Always wear hearing-protection
devices when operating this unit.
Wear appropriate footwear such
as nonskid boots or shoes. Steel-
toed rubber boots are strongly
recommended. NEVER WORK
BAREFOOT!
Gloves are recommended.
■
■
■
■
WARNING!
Figure 11
WARNING!
Protect the discharge hose
from crushing.
Minimize clogging from debris: Place the
suction strainer on a bed of stones or tied
in a bucket.
Figure 12
Keep the suction lift
distance as short as
possible.
Be careful when locating the
pump; the pump may shift
suddenly during operation!
The higher the lift, the less
the discharge quantity.
Discharge Quantity ( liters per minute)
Total head (meters)

10
WARNING!
Non-standard parts may not
operate properly with your unit and
may cause damage and lead to per-
sonal injury.
WARNING!
Before performing any
maintenance, 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.
Daily Maintenance
Prior to each work day, perform the
following:
Remove dirt or debris from the engine,
check the cooling fins and air cleaner for
clogging and clean them as necessary.
1.
Carefully remove any accumulation of
dirt or debris from the muffler or the
fuel tank. Dirt build-up in these areas
could cause engine overheating, induce
premature wear, or create a fire hazard.
2. Check for loose or missing screws or
components.
Check the entire unit for leaking fuel.
3.
4.
10-Hour Maintenance
Loosen
thumbscrews
Figure 13A
(more frequently in dusty conditions)
Remove the air filter cover by loosening
the two thumbscrews. See Figure 13A.
Remove and inspect the pre-filter. If
the pre-filter is torn or otherwise dam-
aged, replace it with a new one. See
Figure 13B.
Clean the pre-filter with soap and water.
Let dry before reinstalling.
Inspect the air filter element. If the ele-
ment is damaged or distorted, replace
it with a new one.
Tap filter gently on a hard surface to dis-
lodge debris from element or use com-
pressed air from the inside to blow debris
out and away from the air filter element.
1.
2.
3.
4.
5.
Filter
Element
Pre-lter
IMPORTANT!
MAINTENANCE, REPLACEMENT OR RE-
PAIR 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 AUTHO-
RIZED BY SHINDAIWA CORPORATION.
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 OUT-
COME OF A WARRANTY CLAIM.
General Maintenance
Mufer
This unit must never be operated with
a faulty or missing spark arrester or
muffler. Make sure the muffler is well
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 connections
tight and clean.
Fasteners
Make sure nuts, bolts, and screws (except
carburetor adjusting screws) are tight.
NOTE:
Using non-standard replacement parts
could invalidate your Shindaiwa warranty.
CAUTION!
Never operate the unit if the air lter
assembly is damaged or missing!
Maintenance
IMPORTANT!
Direct the air stream at the inside face of
the filter only!
Figure 13B
Install the filter element, pre-filter and
cover in the reverse order of removal.
6.

11
50-hour Maintenance
Every 50 hours of operation
(more frequently in dusty or dirty
conditions):
Remove and clean the cylinder cover
and clean dirt from the cylinder fins.
Use a hooked wire to extract the fuel filter
from inside the fuel tank. See Figure 15.
1.
2.
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.
Every 10 to 15 hours of operation:
CAUTION!
Before removing the spark plug,
clean the area around the plug to
prevent dirt and debris from getting
into the engine’s internal parts.
Clean the spark plug
and check the gap at
the electrode.
10/15-Hour Maintenance
0.024–0.028 inch
(0.6–0.7 mm)
Figure 14
NOTE:
The NGK CMR5H also meets the
requirements for electro magnetic com-
pliance (EMC).
Remove and replace the filter element.
Before reinstalling the new filter ele-
ment, inspect the condition of all the fuel
system components (fuel pick-up line,
fuel return line, tank vent line, tank vent,
fuel cap and fuel tank). If damage, split-
ting or deterioration is noted, the unit
should be removed from service until it
can be inspected or repaired by a Shin-
daiwa-trained service technician.
3. Filter Element
Hooked
Wire
Figure 15
Remove and clean the spark plug.
Adjust the spark plug electrode gap to
0.024 - 0.028 inch (0.6 - 0.7 mm). If the
spark plug must be replaced, use only
an NGK CMR5H or equivalent resis-
tor type spark plug of the correct heat
range. See Figure 14.
■
Maintenance (continued)

12
Maintenance (continued)
Remove cylinder cover, rocker arm cover,
and set piston at TDC-compression.
Loosen adjuster locknut so that the
2.5 mm Allen socket head adjustment
screw can turn freely.
1.
2.
Insert .004" (0.10 mm) feeler gauge for
both intake and exhaust between valve
stem tip and rocker arm.
Turn adjustment screw (clockwise =
tighter, counter-clockwise = looser)
until feeler gauge is almost snug. Back
off just enough to allow gauge to slip
out with limited resistance.
While holding adjustment screw in
place with Allen driver, tighten locknut
with wrench.
3.
4.
5.
Turn engine over several times, and
return to TDC-compression. Recheck
with proper feeler gauge to make sure
clearance adjustment did not change as
a result of tightening locknut. Re-adjust
as necessary.
Replace rocker arm cover gasket to
assure proper sealing and install cover.
6.
7.
CAUTION!
Performing a valve adjustment
incorrectly may cause hard start-
ing and/or can damage the engine.
If you are unfamiliar with this engine
or uncomfortable with this proce-
dure, consult with an authorized
Shindaiwa servicing dealer.
Maintenance after first 139-hours,
then every 150-hours thereafter.
Combustion chamber should be decar-
bonized, and the valve clearance should
be adjusted. It is highly recommended
that this is done by a Shindaiwa-trained
service technician.
1.
Replace the spark plug annually: Use
only NGK CMR5H or equivalent resis-
tor type spark plug of the correct heat
range. Set spark plug electrode gap to
0.024-0.028 inch (0.6 -0.7 mm).
2. NOTE:
The NGK CMR5H also meets the
requirements for electro magnetic com-
pliance (EMC).
Figure 16
Figure 17 Figure 18
139/150-Hour Maintenance
Valve Adjustment
IMPORTANT!
If a new gasket is not available and/or the
old gasket is not damaged, the old gas-
ket may be reused. Never use cracked or
damaged gaskets!

13
IMPORTANT!
All stored fuels should be stabilized with
a fuel stabilizer such as STA-BIL™, if
Shindaiwa oil with fuel stabilizer is
not used.
Long Term Storage
Whenever the unit will not be used for 30
days or longer, use the following proce-
dures to prepare it for storage:
Clean external parts thoroughly.
Drain all the fuel from the fuel tank.
Remove the remaining fuel from the
fuel lines and carburetor. To do so:
Prime the primer bulb until no more
fuel is passing through.
Start and run the engine until it stops
running.
Repeat steps 1 and 2 until the engine
will no longer start.


1.
2.
3.
CAUTION!
Gasoline stored in the carbure-
tor for extended periods can cause
hard starting and could also lead
to increased service and mainte-
nance cost.
Spark Arrester Maintenance
Hard starting or a gradual loss of performance
can be caused by carbon deposits lodged in
the spark arrester screen. For maximum per-
formance, the spark arrester screen should be
periodically cleaned as follows.
Remove engine cover to expose muf-
fler. Remove the spark arrester from
the muffler. The arrester is press-fit in
place; there are three screws to remove.
1.
Mufer
Spark Arrester
Screen
Figure 19
Spark Arrester
Screen Cover
Use a plastic scraper or wire brush
to remove carbon deposits from
the arrester screen and wipe clean
exhaust base.
Inspect the screen carefully, and
replace any screen that has been per-
forated, distorted, or is otherwise
unserviceable.
Press the spark arrester into the
exhaust base.
If carbon accumulation in the muffler
or cylinder are severe, or if you do not
notice an improvement in performance
after servicing, have the unit inspected by
an authorized servicing Shindaiwa dealer.
2.
3.
4.
WARNING!
Never operate this unit with
a damaged or missing mufer or
spark arrester! Operating with miss-
ing or damaged exhaust components
is a re hazard, and can also dam-
age your hearing!
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 reas-
semble the element.
Remove the drain plug and drain all water
from the pump housing. See Figure 20.
Store the unit in a clean, dust-free area.





Figure 20
Drain plug
Maintenance (continued)

14
Pump
No output/low
output.
Pump is internally damaged.
Engine Does Not Start
Poor output at
higher suction lifts
Symptom Possible Cause
Suction strainer or hose is clogged or
damaged. (NOTE: liner-type hoses
can also collapse internally).
Remedy
Clean or replace components as
required.
Consult with an authorized servicing
dealer.
What to Check Possible Cause Remedy
Pump was not primed.
Pump head too high.
Suction hose too long.
Air leak in suction hose.
Prime pump.
Move discharge pipe.
Use shortest suction length possible.
Tighten all connections.
Air leak in suction hose.
Air leakage in pump.
Worn pump impeller or volute.
Engine not operating at full rpm.
Tighten all connections.
Inspect and repair as required.
Repair or replace components as required.
Consult with an authorized
servicing dealer.
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
Does the engine crank?
Good compression?
Does the tank contain
fresh fuel of the proper
grade?
Is fuel visible and
moving in the return
line when priming?
Is there spark at the spark
plug wire terminal?
Check the spark plug.
The plug is damaged internally or of
the wrong size.
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Loose spark plug.
Excess wear on cylinder, piston,
rings.
Fuel incorrect, stale, or contaminated;
mixture incorrect.
Check for clogged fuel filter
and/or vent.
The ignition switch is in “O” (OFF)
position.
Shorted ignition ground.
Faulty ignition unit.
If the plug is wet, excess fuel may be
in the cylinder.
The plug is fouled or improperly
gapped.
Consult with an authorized
servicing dealer.
Tighten and re-test.
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.
Replace fuel filter or vent as required.
Restart.
Move switch to “I” (ON) position
and restart.
Consult with an authorized
servicing dealer.
Crank the engine with the plug
removed, reinstall the plug, and restart.
Clean and regap the plug to .024” /
0.6mm-0.7mm . Restart.
Replace the spark plug. Check the
“Specifications” section for the correct
plug for your unit. Restart.
Troubleshooting Guide (continued)

15
Troubleshooting Guide (continued)
Operator is overworking the unit.
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.
Clogged air cleaner element.
Loose or damaged spark plug.
Air leakage or clogged fuel line.
Cut at slower rate.
Consult with an authorized servicing
dealer.
Refill with clean fresh unleaded gasoline
with a pump octane of 87 or higher, mixed
with Premium 2-cycle mixing oil at a 50:1
gasoline/oil ratio.
Clean, repair or replace as necessary.
Consult with an authorized servicing
dealer
Clean or replace the air filter
Tighten or replace the spark plug.
Restart. Check the Product Specifications
page in this manual for the correct spark
plug for this unit.
Repair or replace fuel filter and/or fuel
line.
Water in the fuel.
Piston seizure.
Faulty carburetor and/or diaphragm
Overheating condition.
Improper fuel.
Carbon deposits in the combustion
chamber.
Check fuel octane rating; check for
presence of alcohol in the fuel. Refuel as
necessary.
Consult with an authorized servicing
dealer.
Refill with fresh fuel/oil mixture.
Consult with an authorized servicing
dealer.
Consult with an authorized servicing
dealer.
Is the engine overheating?
Engine is rough at all
speeds. May also have black
smoke and/or unburned
fuel at the exhaust.
Engine is knocking.
LOW POWER
What To Check Possible Cause Remedy

16
ADDITIONAL PROBLEMS
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or loose terminal.
Ignition failure.
Piston seizure.
Ground (stop) wire is disconnected or
switch is defective
Overheating due to incorrect spark plug
Clogged air filter.
Clogged fuel filter.
Lean fuel/air mixture.
Idle speed set too low.
Switch turned off.
Refuel. See Fuel section of manual.
Replace fuel filter.
Drain; replace with clean fuel. See Fuel
section of manual..
Clean or replace spark plug. Check
the Specifications page in this manual
for the proper spark plug for your unit.
Tighten the terminal.
Replace the ignition unit.
Consult with an authorized
servicing dealer
Test and replace as required.
Replace the spark plug. Check the
Specifications page in this manual for
the proper spark plug for your unit.
Clean or replace the air filter.
Replace the fuel filter.
Consult with an authorized
servicing dealer.
Reset the switch and re-start.
Overheated engine.
Warped or damaged attachment.
Loose gearcase.
Poor acceleration.
Engine stops abruptly.
Engine difficult to shut
off.
Excessive vibration.
Idle engine until cool.
Inspect and replace attachment
as required.
Tighten gearcase securely.
Bent main shaft/worn or damaged
bushings. Inspect and replace as necessary.
Troubleshooting Guide (continued)
What To Check Possible Cause Remedy
Adjust: 2,700 (±300) min-1.

17
Shindaiwa Corporation 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 dur-
ing its warranty period. This emission warranty is applicable
in all States, except the State of California.
For parts listed under PARTS COVERED, the dealer autho-
rized by Shindaiwa Corporation will, at no cost to you, make
the necessary diagnosis, repair, or replacement of any defec-
tive 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 war-
ranted 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 Cor-
poration recommends that you retain all receipts covering mainte-
nance on your engine, but Shindaiwa Corporation cannot deny a war-
ranty 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 Corpo-
ration 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 Corporation 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 replace-
ment of that part. The warranted parts include:
1. Carburetor Internal Components
• Valve Assembly-throttle, Jet, Metering Diaphragm
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 adjust-
ment (unless they were made by the dealer or service cen-
ter authorized by Shindaiwa Corporation during a warranty
repair), alteration, accident, failure to use the recommended
fuel and oil, or not performing required maintenance services,
Shindaiwa Corporation
Federal Emission Design And Defect Limited Warranty Utility And Lawn
And Garden Engines
(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 war-
ranty service being performed, and
(e) any non-authorized replacement part, or malfunction of autho-
rized parts due to use of non-authorized parts.
MAINTENANCE AND REPAIR REQUIREMENTS
You are responsible for the proper use and maintenance of the
engine. You should keep all receipts and maintenance records cover-
ing the performance of regular maintenance in the event questions
arise. These receipts and maintenance records should be transferred
to each subsequent owner of the engine. Shindaiwa Corporation
reserves the right to deny warranty coverage if the owner has not
properly maintained the engine. Shindaiwa Corporation will not deny
warranty repairs, however, solely because of the lack of repair, main-
tenance or failure to keep maintenance records.
MAINTENANCE,REPLACEMENTORREPAIROF EMISSION CON-
TROL DEVICES AND SYSTEMS MAY BE PERFORMED BY ANY
REPAIR ESTABLISHMENT OR INDIVIDUAL; HOWEVER, WAR-
RANTYREPAIRSMUSTBEPERFORMEDBYADEALERORSERVICE
CENTER AUTHORIZED BY SHINDAIWA CORPORATION THE USE
OFPARTS THAT ARE NOT EQUIVALENT IN PERFORMANCE AND
DURABILITY TO AUTHORIZED PARTS MAY IMPAIR THE EFFEC-
TIVENESSOFTHEEMISSIONCONTROLSYSTEMANDMAYHAVE
A BEARING ON THE OUTCOME OF A WARRANTY CLAIM.
If other than the parts authorized by Shindaiwa Corporation are used
for maintenance replacements or for the repair of components affect-
ing emission control, you should assure yourself that such parts are
warranted by their manufacturer to be equivalent to the parts autho-
rized by Shindaiwa Corporation in their performance and durability.
OBTAINING WARRANTY SERVICE
All repairs qualifying under this limited warranty must be performed
by a dealer authorized by Shindaiwa Corporation
If any emission-related part is found defective during the warranty
period, it is your responsibility to present the product to an autho-
rized Shindaiwa dealer. Bring your sales receipts showing the date
of purchase for this engine. The dealer authorized by Shindaiwa Cor-
poration 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 Corporation
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]
Limited Warranty

18
NOTES:

19
NOTES:

20
NOTES: