MULTIQUIP DuoScreed LightWeight DSGPULW Guide

THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.
To find the latest revision of this
publication, visit our website at:
www.multiquip.com
OPERATION AND PARTS MANUAL
MODEL DSGPULW
DuoScreed LightWeight
(HONDA GX35SAT GASOLINE ENGINE)
Revision #7 (09/19/18)

PAGE 2 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
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DSGPULW DUOSCREED — PROPOSITION 65 WARNING

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 3
Grinding/cutting/drilling of masonry, concrete, metal and
other materials with silica in their composition may give
off dust or mists containing crystalline silica. Silica is a
basic component of sand, quartz, brick clay, granite and
numerous other minerals and rocks. Repeated and/or
substantial inhalation of airborne crystalline silica can
cause serious or fatal respiratory diseases, including
silicosis. In addition, California and some other
authorities have listed respirable crystalline silica as a
substance known to cause cancer. When cutting such
materials, always follow the respiratory precautions
mentioned above.
WARNING
Grinding/cutting/drilling of masonry, concrete, metal and
other materials can generate dust, mists and fumes
containing chemicals known to cause serious or fatal
injury or illness, such as respiratory disease, cancer,
birth defects or other reproductive harm. If you are
unfamiliar with the risks associated with the particular
process and/or material being cut or the composition of
the tool being used, review the material safety data
sheet and/or consult your employer, the material
manufacturer/supplier, governmental agencies such as
OSHA and NIOSH and other sources on hazardous
materials. California and some other authorities, for
instance, have published lists of substances known to
cause cancer, reproductive toxicity, or other harmful
effects.
Control dust, mist and fumes at the source where
possible. In this regard use good work practices and
follow the recommendations of the manufacturers or
suppliers, OSHA/NIOSH, and occupational and trade
associations. Water should be used for dust
suppression when wet cutting is feasible. When the
hazards from inhalation of dust, mists and fumes cannot
be eliminated, the operator and any bystanders should
always wear a respirator approved by NIOSH/MSHA for
the materials being used.
WARNING
SILICOSIS WARNING RESPIRATORY HAZARDS
DSGPULW DUOSCREED — SILICOSSIS WARNING

PAGE 4 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
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DSGPULW DUOSCREED —TABLE OF CONTENTS
Specification and part
number are subject to
change without notice.
Honda GX35SAT Engine
Air Cleaner Assembly ......................................... 38-39
Cam Pulley Assembly ........................................40-41
Carburetor Assembly .........................................42-43
Crankcase Assembly .........................................44-45
Crankshaft and Piston Assembly ......................46-47
Fan Cover and Clutch/Assembly........................48-49
Recoil Starter Assembly.....................................50-51
Flywheel and Ignition Coil Assembly ................. 52-53
Fuel Tank ............................................................54-55
Muffler Assembly ............................................... 56-57
Engine Top Cover Assembly .............................. 58-59
Labels ................................................................60-61
Terms and Conditions Of Sale — Parts .................. 62
Multiquip DS-Series —
Vibratory DuoScreed
Here's How To Get Help ............................................ 3
Table Of Contents ..................................................... 4
Parts Ordering Procedures ....................................... 5
Rules For Safe Operation ...................................... 8-9
Operation and Safety Decals .................................. 10
Specifications .......................................................... 11
General Information ................................................ 12
Components (DuoScreed) ...................................... 13
Components (Honda GX35SAT Engine) ................. 14
Assembly Instructions ........................................ 15-17
Starting ................................................................... 18
Application/Operation......................................... 19-22
Maintenance ...................................................... 23-24
Troubleshooting (DuoScreed) ................................. 25
Troubleshooting (Honds GX35SAT Engine) ............ 26
Explanation Of Codes In Remarks Column ............ 28
Suggested Spare Parts ........................................... 29
Nameplate and Decals....................................... 30-31
Main Assembly ................................................... 32-35
Blade Assembly ................................................. 36-37
NOTE

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 5
DSGPULW DUOSCREED — PARTS ORDERING PROCEDURES
www.multiquip.com
Ordering parts has never been easier!
Choose from three easy options:
WE ACCEPT ALL MAJOR CREDIT CARDS!
When ordering parts, please supply:
❒Dealer Account Number
❒Dealer Name and Address
❒Shipping Address (if different than billing address)
❒Return Fax Number
❒Applicable Model Number
❒Quantity, Part Number and Description of Each Part
❒Specify Preferred Method of Shipment:
✓ UPS/Fed Ex ✓DHL
■Priority One ✓Tr u ck
■Ground
■Next Day
■Second/Third Day
If you have an MQ Account, to obtain a Username
and Password, E-mail us at: parts@multiquip.
com.
To obtain an MQ Account, contact your
District Sales Manager for more information.
Order via Internet (Dealers Only):
Order parts on-line using Multiquip’s SmartEquip website!
■View Parts Diagrams
■Order Parts
■Print Specification Information
Note: Discounts Are Subject To Change
Goto www.multiquip.com and click on
Order Parts to log in and save!
Use the internet and qualify for a 5% Discount
on Standard orders for all orders which include
complete part numbers.*
Order via Fax (Dealers Only):
All customers are welcome to order parts via Fax.
Domestic (US) Customers dial:
1-800-6-PARTS-7 (800-672-7877)
Fax your order in and qualify for a 2% Discount
on Standard orders for all orders which include
complete part numbers.*
Order via Phone: Domestic (US) Dealers Call:
1-800-427-1244
Best Deal!
International Customers should contact
their local Multiquip Representatives for
Parts Ordering information.
Non-Dealer Customers:
Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.
Note: Discounts Are Subject To Change
Effective:
January 1st, 2006
NOTICE
All orders are treated as Standard Orders and will
ship the same day if received prior to 3PM PST.

PAGE 6 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
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DSGPULW DUOSCREED — SAFETY MESSAGE ALERT SYMBOLS
Safety precautions should be followed at all times when operating
this equipment. Failure to read and understand the Safety
Messages and Operating Instructions could result in injury to
yourself and others.
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
This Owner's Manual has been
developed to provide complete
instructions for the safe and
efficient operation of the Multiquip
Model DSGPULW LightWeight
(LW) DuoScreed
Refer to the
engine manufacturers instructions
for data relative to its safe
operation.
Before using this screed, ensure that the operating
individual has read and understands all instructions in this
manual.
SAFETY MESSAGE ALERT SYMBOLS
The three (3) Safety Messages shown below will inform you
about potential hazards that could injure you or others. The
Safety Messages specifically address the level of exposure to
the operator, and are preceded by one of three words: DANGER,
WARNING, or CAUTION.
HAZARD SYMBOLS
Engine exhaust gases contain poisonous
carbon monoxide. This gas is colorless and
odorless, and can cause death if inhaled.
NEVER operate this equipment in a confined
area or enclosed structure that does not
provide ample free flow air.
Potential hazards associated with the MQ DSGPULW DuoScreed
operation will be referenced with Hazard Symbols which appear
throughout this manual, and will be referenced in conjunction
with Safety Message Alert Symbols.
GASOLINE is extremely flammable, and its
vapors can cause an explosion if ignited. DO
NOT start the engine near spilled fuel or
combustible fluids. DO NOT fill the fuel tank
while the engine is running or hot. DO NOT
overfill tank, since spilled fuel could ignite if it
comes into contact with hot engine parts or
sparks from the ignition system. Store fuel in
approved containers, in well-ventilated areas
and away from sparks and flames. NEVER
use fuel as a cleaning agent.
Explosive Fuel
Lethal Exhaust Gases
Burn Hazards
Engine components can generate extreme heat.
To prevent burns, DO NOT touch these areas
while the engine is running or immediately after
operations. Never operate the engine with heat
shields or heat guards removed.
Rotating Parts
NEVER operate equipment with covers, or
guards removed. Keep fingers, hands, hair and
clothing away from all moving parts to prevent
injury.
NOTE
You WILL be KILLED or SERIOUSLY INJURED
if you DO NOT follow these directions.
You CAN be KILLED or
SERIOUSLY INJURED if
you DO NOT follow these directions.
You CAN be
INJURED if you DO NOT follow
these directions.
CAUTICAUTI
CAUTICAUTI
CAUTION
DANGERDANGER
DANGERDANGER
DANGER
WARNINGWARNING
WARNINGWARNING
WARNING

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 7
Accidental Starting
DSGPULW DUOSCREED — SAFETY MESSAGE ALERT SYMBOLS
ALWAYS place the engine ON/OFF switch in
the OFF position when the DuoScreed is not
in use.
Respiratory Hazard
ALWAYS wear approved respiratory
protection.
Equipment Damage Messages
Other important messages are provided throughout this manual
to help prevent damage to your DuoScreed, other property, or
the surrounding environment.
ALWAYS wear approved eye and hearing
protection.
Sight and Hearing hazard
This DuoScreed, other property,
or the surrounding environment
could be damaged if you do not
follow instructions.
NOTE

PAGE 8 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
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DSGPULW DUOSCREED — RULES FOR SAFE OPERATION
The following safety guidelines should always be used when
operating the
MQ DSGPULW DuoScreed.
General Safety:
■ DO NOT operate or service this
equipment before reading this entire
manual.
The operator MUST BE familiar with proper safety
precautions and operations techniques before using
generator.
■ This equipment should not be operated by persons under
18 years of age.
■ NEVER operate this equipment without proper protective
clothing, shatterproof glasses, steel-toed boots and other
protective devices required by the job.
■ NEVER operate this equipment when not
feeling well due to fatigue, illness or taking
medicine.
■ NEVER operate this equipment under the influence or
drugs or alcohol.
Failure to follow instructions in this manual may lead to
serious injury or even DEATH ! This equipment is to be
operated by trained and qualified personnel only! This
equipment is for industrial use only.
DANGER - READ THIS MANUAL!
■ ALWAYS check the machine for loosened threads or bolts
before starting.
■ NEVER operate the DuoScreed in an explosive
atmosphere or near combustible materials. An explosion
or fire could result causing severe
bodily harm or even
death.
■ NEVER touch the hot exhaust manifold,
muffler or cylinder. Allow these parts
to cool before servicing engine or
generator.
■ HighTemperatures – Allow the engine
to cool before performing service and
maintenance functions. Contact with hot! components
can cause serious burns.
■ The engine of the DuoScreed
requires an adequate free flow
of cooling air. NEVER
operate the DuoScreed in any
enclosed or narrow area where
free flow of the air is restricted.
If the air flow is restricted it
will cause serious damage to
the engine and may cause injury to people. The
DuoScreed's engine gives off DEADLY carbon monoxide
gas.
■ NEVER use accessories or attachments, which are not
recommended by Multiquip for this equipment. Damage
to the equipment and/or injury to user may result.
■ Manufacturer does not assume responsibility for any
accident due to equipment modifications. Unauthorized
equipment modification will void all warranties.
■ Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.
■ Always refuel in a well-ventilated area, away from sparks and
open flames.
■ Always use extreme caution when
working with flammable liquids. When
refueling, stop the engine and allow it
to cool. DO NOT smoke around or near
the machine. Fire or explosion could
result from fuel vapors, or if fuel is spilled
on a hot engine.
■ NEVER operate the DuoScreed in an explosive atmosphere
or near combustible materials. An explosion or fire could result
causing severe
bodily harm or even death.
■ Topping-off to filler port is dangerous, as it tends to spill fuel.
Wipe up any spilled fuel immediately.

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 9
■ ALWAYS read, understand, and follow
procedures in Operator’s Manual before
attempting to operate equipment.
■ ALWAYS be sure the operator is familiar
with proper safety precautions and operations techniques
before using DuoScreed.
■ Refer to the HONDA Engine Owner's Manual for engine
technical questions or information.
■ NEVER use accessories or attachments, which are not
recommended by Multiquip for this equipment. Damage to
the equipment and/or injury to user may result.
■ NEVER run engine without air cleaner. Severe engine
damage may occur.
■ ALWAYS service air cleaner frequently to prevent carburetor
malfunction.
■ ALWAYS store equipment properly when it is not being
used. Equipment should be stored in a clean, dry location
out of the reach of children.
Transporting
■ ALWAYS shutdown engine before transporting.
■ Tighten fuel tank cap securely and close fuel cock to prevent
fuel from spilling.
■ Drain fuel when transporting DuoScreed over long distances
or bad roads.
■ ALWAYS tie-down the DuoScreed during transportation by
securing the DuoScreed with rope.
■ NEVER attach a forklift or other lifting device to the lifting bar.
This bar is only for
manual lifting on the jobsite .
DSGPULW DUOSCREED — RULES FOR SAFE OPERATION
Maintenance Safety
■ NEVER lubricate components or attempt service on a running
machine.
■ ALWAYS allow the machine a proper amount of time to cool
before servicing.
■ Keep the machinery in proper running condition.
■ Fix damage to the machine immediately and always replace
broken parts.
■ Dispose of hazardous waste properly. Examples of potentially
hazardous waste are used motor oil, fuel and fuel filters.
■ DO NOT use plastic containers to dispose of hazardous
waste.
■ DO NOT pour waste, oil or fuel directly onto the ground,
down a drain or into any water source
Emergencies
■ ALWAYS know the location of the
nearest
fire extinguisher .
■ ALWAYS know the location of the
nearest and
first aid kit .
■ ALWAYS know the location of the
nearest phone or keep a phone on
the job site, in case of emergencies.
■ ALWAYS have easy access to the phone
numbers of the nearest
Ambulance , Doctor
and Fire Department . This information will
be invaluable in the case of an emergency.

PAGE 10 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
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Machine Safety Decals
The DUOSCREED is equipped with a number of safety decals. These decals (Figure 1) are provided for operator safety and
maintenance information.The illustrations below shows these decals as they appear on the machine. Should any of these decals
become unreadable, replacements can be obtained from your dealer.
DSGPULW DUOSCREED — OPERATION AND SAFETY DECALS
Figure 1. Operation and Safety Decals
ALL LW blades will use eccentric
position number 1
. Decal DCL 141
is for HD blades.
NOTE

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 11
DSGPULW DUOSCREED — SPECIFICATIONS
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PAGE 12 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
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DSGPULW DUOSCREED — GENERAL INFORMATION
Introduction
The Multiquip DuoScreed is a hand held vibratory screed
designed to strike-off and consolidate concrete slabs. It is
comprised of two major components, the power unit (gasoline
engine), and the strike-off blade. Generally this screed
operates ideally in concrete with a slump of 2 inches or
greater. Its applications include patios, driveways, sidewalks
and floor slabs.
Assembly
There are no tools required to assemble the DuoScreed. The
power unit (engine) is connected to the to the blade by means of
a spring-loaded clamp. Springs within the clamp assembly
prevent vibration from loosening the power unit from the blade.
Handle Adjustments
The handle assembly on the DuoScreed is height adjustable for
operator comfort.The handle design used on this screed allows
the operator to remain upright at all times and can be quickly
adjusted without any tools.
Vibratory System
The vibratory system of the DuoScreed produces low amplitude
high frequency vibrations, designed to level and compact
concrete.This vibratory system is mounted at an angle to transmit
vibration laterally and vertically through the blade to produce a
strong, dense slab.
The engine drives a two piece eccentric weight by means of a
one-piece flexible shaft.This weight produces a vibratory action
which simultaneously allows the DuoScreed to level the slab
and consolidate the concrete beneath the surface.
Blades
The DuoScreed can utilize various blade widths. This screed
uses a
lightweight (LW) type blade. The widths can range
anywhere from 6~16 feet (1.82~ 4.87 meters). See Table 1 for
more detailed information. Since different length blades will
require varying amounts of vibration, the DuoScreed features
adjustable eccentric weights.
Engine
The Multiquip DuoScreed is equipped with a Honda Model
GX35SAT, 1.6 HP, mini 4-cycle gasoline engine. This engine is
lightweight and requires no fuel mixing.
Drive System
The Honda 1.6 HP engine drives a flexible shaft that requires no
greasing. Its short one piece design runs directly to the vibrator
housing and does not bend. This type of design eliminates a
major source of friction and reduces the likelihood of shaft failure.
Transport
To transport your DuoScreed simply unclamp the power unit
from its base. Additionally, the handles can be folded down
for storage. The power unit weighs approximately 29 lbs.
(13.0 kg), and the LW blades weigh approximately 1.95 lbs/
ft (2.9 kg/m). Figure 2 shows the location of the components
of the DuoScreed. The function of each component is
described on the next page.
Some blade widths may not be
available. Please contact MQ unit sales
for available blades.
NOTE

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 13
DSGPULW DUOSCREED — COMPONENTS
Figure 2. DuoScreed Components
Figure 1 shows the location of the components of the DuoScreed.
The function of each component is described below:
1. START/STOP Switch – When starting the engine, place
this switch in the START position. When stopping the
engine, place in the STOP position.
2. Recoil Starter – Manual-starting method. Pull the starter
grip until resistance is felt, then pull briskly and smoothly.
3. Oil Cap – Remove this cap to add engine oil.
4. Throttle Control Lever – Move the throttle lever to the
down position for full throttle (max RPM's), for engine idle,
move the throttle lever to the
up position.
5. Fuel Cap/Tank – Remove the fuel tank cap to add unleaded
fuel ONLY! DO NOT mix fuel. DO NOT over fill. Tank
holds approximately .172 gallons (.65 liters).
6. Handle Bar Adjustment Knobs – Loosen these two
knobs to adjust the handle bar to a suitable working position.
7. Handle Bar – Used in the steering of DuoScreed.
8. Hand Grip – When operating the DuoScreed use this hand
grip to maneuver the machine.
9. Support Stand Latch – Use this latch to lock support
stand in place when DuoScreed is in operation.
10. Support Stand – Use this stand to support the DuoScreed
when not in use.
11. Flexible Drive Shaft– Connected to the drive shaft of the
engine, provides the vibrational force for the eccentric
weights.
12. Shock Mounts – Used to absorb the vibration generated
by the DuoScreed. These shock mounts minimize the
transfer of vibration to the operator.
13. Spring-Loaded Wing Nuts– Turn these 3 spring loaded
wing nuts counterclockwise to release the blade from the
aluminum clamping strip, turn clockwise to secure the blade
to the clamping strip.
14. Blades – The DuoScreed comes equipped from the factory
with LW type blades. Reference Table 1 for details.
15. Eccentric Cover – Encloses the adjustable eccentric
weights. Press the spring clip tab inward and slide the cover
upward to gain access to the eccentric weights.
16. Locking Nuts – These 3 locking nuts are used in
conjunction with the 3 spring loaded wing nuts which
secure the blade to the aluminum clamping strip. Important!
always cover the two outer nuts with the provided plastic
cap. This will prevent concrete and other debris from
entering the quick disconnect system.
17. Lifting Bar– This bar is only for manual lifting on the jobsite.
Not to be used for manual lifting with a forklift or other lifting
device.
18. Gasoline Engine – This DuoScreed uses a HONDA
GX35SAT 1.6 HP gasoline engine. Refer to the
HONDA
owners manual for engine information and related topics.

PAGE 14 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
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DSGPULW DUOSCREED — COMPONENTS (HONDA GX35SAT ENGINE)
1. Spark Plug – Provides spark to the ignition system. Set
spark plug gap to 0.6 - 0.7 mm (0.024 - 0.028 inch) Clean
spark plug once a week.
2. Muffler – Used to reduce noise and emissions. DO NOT
touch muffler while engine is running, let engine cool before
performing any maintenance.
3. Spark Arrester – Prevents sparks from leaving the engine
exhaust system, which could ignite flammable materials.
4. Starter Grip – Grip this handle to start engine. See engine
starting section of this manual.
5. Recoil Starter (pull rope) – Type of engine starting method.
6. Oil Filler Cap – Remove this cap to add engine oil. Engine
oil capacity is 0.11 quart (0.1 liters). Use SAE 10W-30.
7. Fuel Tank – Holds .65 liters (approximately .172 gallon) of
unleaded gasoline.
8. Fuel Filler Cap – Remove this cap to add unleaded
gasoline to the fuel tank. Make sure cap is tighten securely.
DO NOT over fill.
9. Priming Bulb – Used in the starting of a cold engine or an
engine that has run out of fuel. Press the priming bulb
repeatedly until fuel can be seen inside the clear plastic
bulb.
10. Air Cleaner – Prevents dirt and other debris from entering
the fuel system. Release latch on side of air filter
compartment to gain access to filter element.
11. Choke Lever – Used in the starting of a cold engine, or in
cold weather conditions.The choke enriches the fuel mixture
for starting a cold engine.
Figure 2. HONDA GX35SAT Components

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 15
DSGPULW DUOSCREED — ASSEMBLY INSTRUCTIONS
Assembly Instructions
This section will explain how to assemble the DuoScreed.
It is recommended that you familiarize
yourself with the DuoScreed’s
components. For assistance
identifying components called out in
the text, refer to Figure 1.
1.The DuoScreed is comprised of two major components.
The power unit (Honda GX35SAT Engine) and the strike-
off blade. This DuoScreed is equipped with a quick
disconnect system, with which the power unit can be
mounted onto two aluminum clamping strips with ease.
2.The aluminum clamping strip (retaining plate) is located at
the base of the power unit. This clamping strip is what
holds the blade in place with the aid of three quick
disconnect spring loaded wing nuts (Figure 3) that can
either be tighten or loosened by hand.
Figure 3. Blade Quick Disconnect System
3. Determine whether you will be using the DuoScreed on
forms or as a wet screed .This will decide how the power
unit will be mounted
. If the DuoScreed will be used as a wet
screed the wing nuts should be located above the smooth
edge of the blade. If the DuoScreed will be used on forms
(Figure 3) the wing nuts should be located above the curled
edge of the blade.
4. Loosen each of the three wing nuts about 1/4 inch (8 mm).
It is not necessary to completely remove the wing nuts from
the aluminum clamping strip.
5. Locate the two red indicator arrows (Figure 4) on the top of
the blade. The power unit should be placed squarely
between the two markers.
NOTE

PAGE 16 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
l
6. Place the front of the power unit over the blade (Figure 3)
until the front of the clamp is seated within the front blade
collar.
7. Ease the power unit back to allow the rear clamp to seat
itself within the rear blade collar. It may be necessary to
further loosen the wing nuts to allow the clamp to fit around
the blade collar.
8. Securely hand tighten each of the three wing nuts. The
wing nuts are spring loaded to prevent them from coming
loose during operation.
DSGPULW DUOSCREED — ASSEMBLY INSTRUCTIONS
Figure 4. Blade Mounting Diagram
Figure 5. Handle Bar Adjustment Knob
9. Two handle bar adjustment knobs (Figure 5) are located at
the base of the steering handle bar. Loosen these two knobs
to adjust the height of the steering handle bar to a suitable
working position.
10. The DuoScreed is now ready for operational use.

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 17
DSGPULW DUOSCREED — ASSEMBLY INSTRUCTIONS
Eccentric Weight Adjustment
There are two eccentric weights (Figure 6) that are supplied
with the DuoScreed. These weights are located inside the
eccentric weight compartment, which is located at the bottom of
the unit.
Figure 6. Eccentric Weight Location
These weights determine the amount of vibration that will travel
down the blade. Depending on the type of blade that is used, will
determine the position of the two eccentric weights. Reference
Figure 7 in determining how your eccentric weights should be
positioned.
1.To gain access to the eccentric weight compartment, press
the spring clip tab on the eccentric cover and slide the
cover upward to remove.
2. Loosen the eccentric locking wing nut.
3. Use the chart in Figure 7 to determine what position your
eccentric weights should be in (position 1, 2 or 3).
Example:
A 16 ft. (5.0 meters) blade will place the eccentric weights in
position 3. Please note that all LW blades widths use position 1.
Figure 7. Eccentric Weight Positions

PAGE 18 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
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DSGPULW DUOSCREED — STARTING
Engine Pre-Check
1. Fill the fuel tank (Figure 8 ) with unleaded gasoline. DO NOT
over fill. Topping-off to filler port is dangerous, as it tends to
spill fuel. Wipe up any spilled fuel immediately.
Figure 8. Fuel Tank
1. Place the engine in a level position.
2. Check the engine oil level by unscrewing the engine oil dip
stick (Figure 9) from its holder.
3. If oil is not observed at the edge of the oil filler hole, fill with
oil until oil is present at edge of oil filler hole. Remember to
add oil slowly to avoid overflowing, as the engine oil tank
capacity is small.
Figure 9. Engine Oil Dipstick/Oil Filler Hole
4. Reinstall the engine oil dipstick securely.
Starting The Engine
1. To start a cold engine, move the choke lever (Figure 10) to
the CLOSED position. If restarting a warm engine leave the
choke lever in the OPEN position.
Figure 10. Choke Lever
3. Set the engine START/STOP switch (Figure 12) to the
START position.
4. Pull the starter rope (Figure 13) lightly until you feel resis-
tance, the pull briskly. Return the starter rope gently.
Figure 12. Engine START/STOP Switch
2. Press the priming bulb (Figure 11) repeatedly until fuel can
be seen inside the clear plastic bulb.
Figure 11. Priming Bulb Location
Figure 13. Engine Starter Rope
5. Once the engine has started, allow it to idle for 3 to 5 minutes.

DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 7 (09/19/18) — PAGE 19
DSGPULW DUOSCREED — APPLICATION/OPERATION
Application/Operation
1. Before placing the DuoScreed in concrete for screeding,
it is a good idea to apply
form oil to the blade and all
frame parts that may come in contact with the concrete.
This form oil will become useful when cleaning the
DuoScreed. Make sure to saturate the unit with a good
amount of form oil.
2. Prepare a grid of #5 rebar pins (Figure 14) equally spaced
approximately every 9 to 11 feet. If a 10 ft. screed blade
is going to be used space the grade pins every 9 feet, if
a 12 ft. screed blade is required, space the grade pins
every 11 ft. Make sure to drive the pins deeply into the
ground.
3. Use a
string line or laser to set the pins to grade (height).
The grade should be to the top of the grade pins. Remem-
ber, before any concrete is to be poured, make sure that
the top of the pins are dead on grade.
Figure 14. DuoScreed On Forms and Grade Pins
4. Once all the grade pins have been placed correctly and
are dead on grade, concrete can then be poured on top
of grade pins.
5. Level, and form the concrete as close as possible to
grade. Mark the top of each pin so that its exact location
will be known. Use a hand trowel to float the edges and
plumbing grade pins.
6. If chalk lines are used for grade against forms, walls or
existing concrete, float out the grade with a hand float
along the edge.
7. Two workers will be required to assist the DuoScreed
operator when making the 12-18 concrete bases, one on
each side.These workers will rake the concrete in toward
the center of the DuoScreed away form the bases to avoid
changing base elevation.

PAGE 20 — DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. #7 (09/19/18)
l
Figure 15. Throttle Lever
DSGPULW DUOSCREED — APPLICATION/OPERATION
8. Set the DuoScreed blade down in the concrete base in the
left most corner of the grid between the two grade pins as
shown in Figure 16. Adjust the DuoScreed's handle bar
to a height where the operators is not bending over, but
standing upright with arms extended forward.
9. To begin screeding move the engine throttle lever (Figure
15) midway between idle and full throttle. Notice that the
DuoScreed's vibration will cause the blade to sink into the
concrete base until it touches the top of the grade pins
10. Pull the DuoScreed from the edge of the grid's
top left
corner, horizontally toward the center .Notice that as the
DuoScreed passes over the grade pins a small circle of
concrete around the grade pins will appear.This indicates
that the Duoscreed has vibrated the grade pin, and that
the operators is
dead on grade .
11. Keep the DuoScreed blade level and create a level base
between 12-18 inches wide.
12. After a complete pass over the first set of grade pins has
been made, remove the DuoScreed from the concrete
base and position it over the second set of grade pins
(Figure 16), overlapping the first set of grade pins be-
tween 12-18 inches. Repeat this process until all
left edge
grade pins have a level base between 12-18 inches wide.
Before placing the DuoScreed in
concrete, make certain the unit has
been set up (blade) for
wet screeding .
This can be verified by observing that
the operator's toes are pointing
towards the smooth side of the blade
(Figure 3), from the operators's position
(handle bars).
NOTE
13. Repeat steps 9 through 12 pulling the DuoScreed from
the edge of the grid's
top right corner, horizontally toward
the center.
14. Remember to build the bases in long parallel strips
across the pins and on the hand floated edges and
against plumbing or other outs, leaving the long unfin-
ished areas about 8 or 9 feet wide. Once the bases are
built, the workers can more accurately shape the concrete
to grade.
15. When
all the bases have been completed, the operator and
his two workers can begin to work down the long parallel
unfinished 8 to 9 foot wide middle portions. When moving the
DuoScreed down the middle portions, the ends of the
DuoScreed blade should be resting on the bases, and the
leading edge of the blade should be approximately 1/8 to
1/4 inch above each base depending on the slump and
condition of the concrete. Have workers adjust the concrete
along the face of the DuoScreed's blade to assure that the
base is level with no high or low areas ahead of the blade.
16. Keep the engine throttle between 1/2 to 2/3 of full speed, if
necessary readjust the DuoScreed's vibration to meet the
condition of the concrete. Remember to move rapidly and
watch both ends of the blade to assure that the blade remains
1/8 to 1/4 of an inch above the concrete base. Always keep
the workers alert for concrete height changes.
Shut-Down
1. NEVER
stop the engine suddenly while running at high
speed.
2. Move the engine
throttle lever (Figure 15) to the low
speed position (idle).
3. Set the engine ON/OFF switch (Figure 12) to the OFF
position.
4. Remove the DuoScreed from the slab surface.
Cleaning
1. Allow the engine to
cool before cleaning. When the engine
has cooled, use a damp and a mild detergent to remove all
concrete and foreign debris. DO NOT spay the engine with
water.
2. To remove all concrete and foreign debris from the
DuoScreed, wash the DuoScreed's blade and frame using
water and a mild detergent. Remember, if form oil was
applied before the machine was placed in concrete, the
cleanup will be much easier.