Husqvarna Soff-Cut 150D User manual

Operator’s Manual
Read these instructions carefully and make sure
you understand them before using the 150D.
Manuel d’utilisation
Veuillez lire attentivement ces instructions et assurez-vous de
bien les comprendre avant d’utiliser la machine modèle 150D
Manual del operador
Lea cuidadosamente estas instrucciones y asegúrese
de que las comprende bien antes de usar el 150D.
150D

CONTENTS
Content Page
Table of contents ………………………….. 2
Unpacking .................................................. 2
Transporting ............................................... 2
Sound Data ................................................ 2
Introduction, personal safety ...................... 3
Registration of the product ………………… 4
General safety message ............................ 4
Safety warnings ......................................... 5
ProEdge series blades .............................. 6
ProEdge blade installation ........................ 7
What is what? ............................................ 8
Operating instructions ............................... 9
Blade depth adjustment ............................ 10
Fuel and fuel safety warnings …….…….... 11
Recommended fuels ................................. 11
Recommended oils …….......……….…..… 11
Maintenance ……………………………..... 12
Sawing contraction joints …………....…… 13
Maximizing the Soff-Cut system .......….... 14
Troubleshooting ........................................ 15
Technical specications ............................ 16
Conformity certicates .............................. 16
Warranty ................................................... 17
Your 150D saw has been shipped from the factory thoroughly
inspected. Only minimal assembly is required to start using the
saw. Remove the saw from the container using proper lifting
techniques. Discard or recycle the packing material per your
regional laws. In your container will be the 150D saw, a blade
shaft cover, two (2) blade shaft wrenches, spark plug wrench,
an owner’s manual, an engine owner’s manual, a part list, a
warranty card, two (2) 1/8” wide guide wheels (installed), and
two (2) 1/4” wide guide wheels (for use with XL6-V25-D V-
blade).
NOTE: No radius or bevel blade is included with the saw.
Purchase the appropriate Husqvarna ProEdge Series
blade from your local Husqvarna Construction Product
dealer.
CAUTION
Only use roll cage when lifting the 150D.
The 150D saw weights approximately 100 pounds (45.4
kilograms) when ready to use . Use safe lifting practices when
handling the saw. Always remove the diamond blade when
transporting the saw. Pull the locking pin and fold the handle
forward. The saw can be lifted from the center handle on the
roll cage. If two people are lifting the saw, use the roll cage bar
on each side of the saw and lift two hands. Always store the
saw in a completely lowered position and secured from
moving.
UNPACKING
2
TRANSPORTING
According to Standard ISO 3744:1998 and Directive 2000/14/
EC for environmental sound level and according to Standard
ISO 11201:1995 for sound level at the operator’s position, the
150D saw emits the following:
Sound power level Lwa 98 dB (A)
Sound pressure level Lpa 84 dB (A)
SOUND DATA
WARNING
Always wear safety approved hearing protection.
Upper handle
Lower handle
Roll cage
Locking pin

INTRODUCTION
Common sense:
The focus of this manual is HOW to operate and service the equipment safely.
It is not possible to cover every conceivable situation you can face when using this equipment. Therefore use this
product only in a manner described in this manual. Operation or handling the machine in any other manner can
lead to serious injury or death.
If a situation is not described in this manual it should be considered dangerous - and not be done.
If you are unfamiliar with this product make sure that you carefully understand how it functions and practice all
operations and handling before putting the machine to use. Familiarize yourself in the presence of an experienced
operator. Avoid all situations that are beyond your capability.
If you still feel uncertain about the operating procedures after reading these instructions DO NOT operate the
machine until you have consulted an experienced operator.
If you have further questions you can contact the closest Husqvarna Construction Products location by writing or
calling, see information below. You can also nd the closest location by searching the internet at;
www.husqvarnacp.com . Husqvarna Construction Products will willingly be of service and provide you with advice
as well as help you to use your product both efciently and safely.
Additional manuals are available at NO CHARGE and can also be obtained on the internet site.
Husqvarna Construction Products
265 Radio Road
Corona, California 92879
USA
Toll Free no: 800 776 3328 (USA & Canada)
Phone no: 951 272 2330
Telefax no: 951 272 2338
Internet Site: www.husqvarnacp.com
PERSONAL SAFETY EQUIPMENT
When working and operating the saw the following
approved personal safety items should be used:
Head
Protection
Hearing
Protection
Eye
Protection
Safety
Shoes
Protective
Gloves
The 150D is designed as a residential and light commercial decorative concrete cutting saw for the
contractor who wants a no-hassle way to make decorative cuts. It was also designed to be economical and
durable. The 150D has a low noise, low vibration Robin engine and is ideal for large and small jobs alike.
This saw is set up to handle the full line of Husqvarna ProEdge beveled blades, which create a “Tooled
Joint” look to control joints or saw cuts.
3

4
REGISTER THE PRODUCT
Please register your new 150D with Husqvarna Construction Products by mailing
in the registration card that came with the machine or you can register on the internet site
www.husqvarnawarranty.com
Registration will allow us to contact in case of any critical updates or recalls on this machine.
Warranty registration has also been found to be helpful in tracing stolen equipment.
Record the following information for your records:
PURCHASE DATE: ________________
MODEL No: ________________ SERIAL No: __________________
ENGINE MODEL: _____________ ENGINE TYPE: ______________ ENGINE CODE: ________________
The 150D model and serial number as well as the engine model number, engine type and code are critical in order
to obtain the correct service parts.
SAFETY HAZARDS
CAUTION
HEARING HAZARD
During the normal use of this
machine, operator may be
exposed to a noise level equal
to or higher than 85 dB(A). Use
hearing protection.
WARNING
ASPHYXIATION HAZARD
Running an engine in a con-
ned or badly ventilated area
can result in injury or death due
to asphyxiation or carbon
monoxide poisoning.
WARNING
CALIFORNIA PROP 65
Use of this product can expose
you to materials known to the
State of California to cause
cancer and/or birth defects or
other reproductive harm.
WARNING
DO NOT MODIFY THE PRODUCT
Under no circumstances may the design of the machine be modied without the permission of the manu-
facturer. Always use genuine accessories. Unauthorized modications and/or accessories can result in
serious personal injury or the death of the operator or others. Your warranty may not cover damage or
liability caused by the use of unauthorized accessories or replacement parts.
SAFETY DEFINITIONS
In this manual a Safety Alert Symbol followed by the signal words WARNING and CAUTION are used to
identify safety information about hazards which can result in death, serious injury and/or property damage.
These signal words mean:
WARNING indicates a hazard which, if not avoided, could result in death or serious injury.
CAUTION indicates a hazard which, if not avoided, might result in minor or moderate injury.
NOTICE indicates a message not related to personal injury.

5
SAFETY WARNINGS
WARNING
Failure to comply with the following warnings could
result in serious bodily injury or death!
PERSONAL SAFETY
• Read and understand instructions before operating saw.
• Always wear safety approved hearing, eye, head and
respiratory protection.
• Wear boots with non-slip soles to provide proper footing.
Steel-toed safety boots are recommended.
• Wear rubber work gloves to avoid contact with wet concrete
which can cause serious skin irritation.
• Know how to stop the saw quickly in case of emergency.
• Keep all parts of your body away from blade and other
moving parts. Do not wear loose clothing or jewelry which
can be caught in moving parts. Wear protective hair covering
to contain long hair.
• Use caution when loading and unloading saw.
• Stay alert. Maintain awareness of saw operation. Use
common sense. Do not operate saw when tired or after
consumption of any substance that would impair physical
function or rational judgment.
• Do not over reach. Keep proper footing and balance.
WORK AREA SAFETY
• Never operate the saw in any application or job where you
are not trained or supervised.
• Keep visitors, children and animals out of the work area.
• Observe all safety regulations for the safe handling of fuel.
Gasoline is extremely ammable and its vapors can explode
if ignited. Do not refuel indoors or in poorly ventilated areas.
Handle fuel in safety containers. Shut off the engine and
allow it to cool before refueling. Wipe the saw dry if fuel is
spilled on it. Always move away from the fueling area before
starting the engine. Do not smoke while refueling.
• Do not operate the saw while smoking or near an open ame.
• Do not operate the saw in areas of combustible material or
fumes. Sparks may occur from the saw that could cause a
re or explosion.
• Operate only in well ventilated areas. Engine exhaust contain
carbon monoxide which can cause loss of consciousness and
possible death.
• The mufer and engine become very hot during operation.
Keep all body parts and foreign material away from the
engine while running.
• Avoid dangerous environments. Do not expose saw to rain.
Keep work area well lit and clean.
SAW SAFETY
• Do not leave saw unattended while the engine is running.
• Do not alter the saw. Any alteration or modication is misuse
and may result in a dangerous condition.
• All safety guards must be in place before starting the engine.
• Only operate the saw from behind the machine with both
hands on the handle.
• Do not use damaged equipment, blades, guards or personal
protection equipment. Do not disable safety equipment or kill
switches.
• Do not operate the saw if there is a fuel leak.
• Use extreme caution when maneuvering the saw on ramps
or loading and unloading from trucks or trailers.
• Use only Husqvarna Construction Products replacement
parts. Use of unauthorized parts may create a danger.
• Do not use the saw as vehicle for transporting personnel or
equipment.
• Remove the ignition cable from the spark plug before
performing saw maintenance or changing blades to prevent
accidental engine starting.
• Remove all wrenches from the saw before starting.
• Never stand on the saw.
• When the saw is not in use or transporting, remove the blade
and lower the saw completely. Properly secure the saw to
prevent accidental movement.
BLADE SAFETY
• Examine cutting blades before each use. Do not use any
blades that has cracks, nicks, or aws. Tri-arbor hole should
be undamaged.
• Inspect blade anges for damage, excessive wear and
cleanliness before mounting the blade. The blade should t
snugly on clean, undamaged, tri-arbor shaft.
• Use only Husqvarna ProEdge Series blades or blades
marked with a maximum operating speed greater than 4450
rpm.
• Never operate the saw without the blade block assembly
securely in place including blade cover and lexan shields
installed in working order. A damaged blade block assembly
must be replaced to protect the operator.
• Make sure the blade does not make contact with the ground
or any other surface when maneuvering the saw.
• Avoid getting in direct line with the blade or contacting the
blade while it is rotating.

6
PROEDGE SERIES BLADES
The ProEdge Line of beveled diamond blades is especially designed for architectural scoring to replace labor-intensive hand
tooling. These specialty blades are ideal for residential and commercial applications to chase standard joints for a beveled look.
Chasing cuts using the ProEdge blades would begin the next day or later after the concrete is placed and control joints have
been made. Choose the correct specication of ProEdge blade to suit your particular needs
ProEdge V-Blade XL6-V21-D 3/8” (9.53mm) wide bevel blade for existing 0.100” (2.54mm) wide saw cut
XL6-V23-D 5/8” (15.88mm) wide bevel blade for existing 0.100” (2.54mm) wide saw cut
XL6-V25-D 5/8” (15.88mm) wide bevel blade for existing 0.250” (6.35mm) wide saw cut
XL6-V500-D 1” (25.4mm) wide bevel blade for existing 0.500” (12.7mm) wide saw cut
ProEdge Radius Blade XL6-R250-D 5/8” (15.88mm) wide bevel blade for existing 0.100” (2.54mm) wide saw cut
XL6-R500-D 3/4” (19.1mm) wide bevel blade for existing 0.100” (2.54mm) wide saw cut
3/8"
1/8"
.100" - .120"
Existing
Joint
5/8"
1/4"
.100" - .120"
Existing
Joint
5/8"
.250"
3/16"
Existing
Joint
5/8"
.100" - .120"
Existing
Joint
1" 1/4"
.500"
Existing
Joint
.100" - .120"
3/4"
Existing
Joint
R.250 R.500
XL6-V21-D XL6-V23-D XL6-V25-D
XL6-R250-D XL6-V500-D XL6-R500-D
Choose the correct specication of ProEdge Blade based on the width of the pre-existing control joint as follow:

7
PROEDGE BLADE INSTALLATION
NOTE:
The 150D is shipped from the factory with the blade pre-
set to the proper cutting depth. Little or no adjustment is
necessary.
Step 1
With the saw turned off, fold the saw handle to its full upright
position and install the locking pin in the handle. With both
hands, push down on the handlebar and raise the saw to its
full height and locked position.
Step 2
Remove the blade block cover (A) by turning the two locking
knobs counter-clockwise. With the two wrenches supplied
with the saw, insert one in the slot at the front of the engine
and one on the bolt on the blade shaft in the blade block (B).
Rotate the blade shaft counter-clockwise with wrench on the
blade shaft bolt (C) until the second wrench engages the ats
on the other end of the shaft.
Step 3
Remove the blade shaft bolt by continuing to turn the bolt
counter-clockwise. Remove the outer arbor washer or ange
(D).
WARNING
Inspect the blade (F) for any damage. Do not use any
blade that has cracks, nicks, aws or a damaged arbor.
Make sure the blade is marked with a maximum operat-
ing speed greater than 4450 rpm.
Step 4
Match the blade tri-arbor to the blade shaft arbor and install
the blade rmly against the rear ange (E). Insure the blade is
installed on the tri-arbor correctly. Match the female tri-arbor of
the outer washer or ange with the blade shaft and install the
blade shaft bolt turning clockwise. Be sure the outer ange is
fully seated and rmly holding the diamond blade in position.
Step 5
Install the blade cover (A) by turning the two knobs and tighten
until fully seated against the blade block.
When replacing a worn blade, thoroughly clean the concrete
from blade block and blade cover before installing the new
blade. Discard the old skid plate and replace it with a new skid
plate.
NOTE:
Use the 1/4” wide guide wheels (front and rear included
with the saw) when chasing 1/4” saw cuts with the XL6-
V25-D blade. To replace guide wheels, remove lock nut
and slide out the shoulder bolt. Make note of the washers
and other parts removed and the order of assembly. Slide
the bronze bushing from inside the old guide wheel and
insert into the new one. Both front and rear guide wheels
must be replaced; do not mix different width guide wheels.
Install the new guide wheels using the same shoulder
bolts, lock nuts and plastic washers.
Half-inch wide guide wheels (not included with the saw) also
available for use with ProEdge Blade XL6-V500-D, when chas-
ing 1/2” wide saw cuts.
A
C
D
E
B

WHAT IS WHAT
D
C
E
B
A
I
F
What is what?
A. Oil dipstick or ll
B. Oil drain
C. Fuel shut off lever
D. Choke lever
E. Throttle lever
F. Starter rope
G. Air cleaner
H. Fuel tank
I. Engine on/off switch
Model number and serial
number
8
GH
H
A

9
OPERATING INSTRUCTIONS
Experience is very important when running the 150D saw. A
skilled worker is highly recommended. Always do an inspec-
tion of the saw before starting the engine. Check the fuel (H)
and oil level (A) per the enclosed engine manual. SAE 10W/30
oil and unleaded gasoline with an 87 or higher octane should
be used. Observe all safety regulations for the safe handling
of fuel. Always check the engine oil with the saw turned off,
completely lowered and the engine level! Do not screw the oil
dipstick into the oil ller neck to check the oil level. Check that
all controls are in good working order. Check for loose bolts or
nuts. Check for fuel or oil leaks. WARNING
Do not leave the saw unattended while the engine
is running! Always secure the saw from movement
while unattended.
Insure all guards are secure, undamaged and properly in-
stalled.
To start the engine, turn the fuel valve (C) on by the carburetor
on the side of the engine. Raise the blade by pushing down on
the handle bar with both hands to the full and locked position.
Turn the engine kill switch (J) to the “ON” or “1” position. Move
the engine throttle lever (E) 1/3 of the way to the open position.
Close the engine choke lever (D). The closed choke position
enriches the fuel mixture for starting a cold engine. The open
choke position provides the correct fuel mixture for operation
after the engine starts and for restarting a warm engine. Start
the engine by pulling the rope handle (F) on the side of the
engine. After the engine starts, slowly close the choke lever.
Allow the engine to warm for a few minutes.
WARNING
Do not operate saw if there is a fuel leak!
WARNING
Do not operate the saw unless all guards, safety
equipment and the engine kill switch are in place and
operational!
Always clean the blade block assembly thoroughly before stor-
ing the saw. Always close fuel valve before transporting.
Blade release lever
Handle locking pin
Blade block
Front guide wheel
Check the air lter (G) and clean or replace if necessary.
Check for proper specication of blade Check that the blade
and skid plate are in good condition. Check that the handle is
in full upright position and pinned. Check that the front guide
and rear guide wheels spin freely. Make sure the work site is
clean, well lit and hazard free.
WARNING
ASPHYXIATION HAZARD
Running an engine in a conned or badly ventilated
area can result in injury or death due to asphyxiation
or carbon monoxide poisoning.
WARNING
Before each use, carefully inspect the 150D for any
damage to any of its parts and components. Pay
careful attention to any leakage of gasoline or oil.
Under no circumstance should the 150D or any of
its attachments be operated if you nd damage or
are suspicious that something appears to be dam-
aged.
Open the engine throttle lever to full open position for maxi-
mum engine speed. Line up the rear guide wheel with the pre-
existing saw cut. Push down on the saw handle and pull the
blade release lever to slowly lower the saw and drop the rear
guide wheel, then the front guide wheel, into the saw cut.
NOTE: Do not completely lower the saw and the blade
into the concrete until the front and rear guide wheels are
positively aligned in the saw cut.
WARNING
The 150D saw is not designed for Ultra Early Entry
concrete sawing. The ProEdge line of blades is not
designed, nor is meant, for placing initial saw joints
for controlling random cracking. Although the saw
will accept a standard Excel Series blade, doing so
will cause spalling and raveling of saw joints when
cutting green concrete.
Once the guide wheels are in the saw cut, lower the saw com-
pletely to start chasing the joint. Chase an existing saw joint for
approximately one foot and verify blade/guide wheel alignment
and that the proper decorative cut is achieved. Increase the
forward speed of the saw until the blade and engine are work-
ing at maximum efciency. Maintain an even speed; pushing
the saw too fast will cause the blade to ride up out of the
saw joint causing uneven beveling.
Do not hit the blade block assembly against any object. Dam-
age may result. Push down on the back of the handle bar to
raise the saw out of the cut to the full locked position. Move the
engine throttle lever to the full closed position. Turn the engine
kill switch (J) to the “OFF” position.

10
BLADE DEPTH ADJUSTMENT
NOTE: The radius and V-blade depth of cut for the 150 saw
is preset at maximum depth at the factory for optimum
performance. Do not attempt the following adjustment un-
less necessary.
To adjust the blade for shallower cuts (narrower width) loosen
the DEPTH ADJUST JAM NUT counter-clockwise. Turn the
DEPTH ADJUST BOLT clockwise.
NOTE: Each full revolution of the DEPTH ADJUST BOLT
will reduce the beveled or radius cut width by 1/8”.
Loosen the HEIGHT ADJUST JAM NUT counter-clockwise.
Make sure the rear wheels are at on the ground by pushing
the down on the REAR OF MAINFRAME, then turn (by hand)
the HEIGHT ADJUST BOLT clockwise until it touches the
guide wheel shaft.
Back off a quarter turn (counter-clockwise) and lock in place by
tightening the HEIGHT ADJUST JAM NUT. Chase an existing
saw joint for approximately one foot to verify that the proper
decorative cut is achieved.
WARNING
Do not adjust for more depth--doing so will produce
an undesirable “house effect” beveled cut. See illus-
trations below.

11
FUEL HANDLING
PROPER FUEL
Taking the following precautions will lessen the risk
of injury and property damage:
- Use extreme care in handling gasoline. It is
extremely ammable and the vapors are explosive.
- Extinguish all cigarettes, cigars, pipes, and other
sources of ignition.
- Use only approved gasoline containers.
- Never remove gas cap or add fuel with the engine
running. Allow engine to cool a minimum of 3
minutes before refueling.
- Never fuel the machine indoors.
- Never store the machine or fuel container where
there is an open ame, spark, or pilot light such as
on a water heater or other appliances.
- Never ll containers inside a vehicle or on a truck
or trailer bed with a plastic liner. Always place
containers on the ground away from your vehicle
when lling.
- Remove the 150D from the truck or trailer and
refuel it on the ground. If this is not possible, then
refuel the equipment with a portable container,
rather than from a gasoline dispenser nozzle.
- Keep the nozzle in contact with the rim of the fuel
tank or container opening at all times until fueling is
complete. Do not use a nozzle lock-open device.
- If fuel is spilled on clothing, change clothing
immediately.
- Never overll fuel tank. Always wipe off any spilled
fuel or oil. Replace fuel cap and tighten
The Robin engine is certied to operate on automotive unlead-
ed gasoline with a pump octane rating (M+R) of 87 or higher.
Fuel tank capacity is 0.7 gallon (2.7 liters).
Refuel in a well-ventilated area with the engine stopped.
You may use regular unleaded gasoline containing no more
than 10% ethanol (E10). Do not use gasoline containing
methanol.
Use of fuels with an ethanol content of more than 10% (E10)
may cause starting and/or performance problems. It may also
damage metal, rubber, and plastic parts of the fuel system, as
well as posing a re hazard.
Do not use fuel that is older than 30 days. Old fuel can cause
running problems as well as fuel system damage.
The engine will not operate on gasoline
marketed as E-85 (85% ethanol)
OIL HANDLING
WARNING
Used oil is a hazardous waste product. Dispose
of used oil properly. Do not discard with household
waste. Check with your local authorities, service
center, or dealer for safe disposal/recycling facility.
NOTICE
ENGINE OIL
Oil Recommendation
The engine holds approximately 0.6 quart (0.6 liter) when
changing oil.
- Use a 4-stroke automotive detergent oil of API service class
SE or higher grade.
- Do not use special additives.
- Choose a viscosity according to the table below.
Please read the enclosed Robin Operator’s Manual for com-
plete oil information.

12
Engine Oil
Checking, Adding and Changing Oil
Check the engine oil level (A) daily with saw fully lowered and
the engine level. See the enclosed Robin manual for more
details.
Use SAE 10W-30 viscosity detergent automotive type with API
service class SE or higher grade oil.
Note: Engine holds approximately 0.6 quart (0.6 liter) when
changing oil and oil lter.
Changing the Oil
Change oil after the rst 5 to 8 hours of use.
Thereafter every 50 hours.
MAINTENANCE
Guards
Check all guards for damage and proper function daily espe-
cially the blade block. Blade block and cover should be secure
to the saw and not damaged. Lexan side covers on the blade
block should move freely up and down.
The oil drain plug is located at the bottom of the engine block.
Place a pan under the drain and remove the plug. Drain the oil
and replace the plug. Using a long neck funnel, ll the engine
with 0.6 quarts (0.6 liters) of oil. When full, the oil level should
be at the high level mark on the dipstick (A) or to the top of the
threads on the engine ll hole. The engine is equipped with an
oil alert system that will stop the engine if the oil level is low.
A
Oil drain plug
NOTICE
Used oil is a hazardous waste product. Dispose of
used oil properly. Do not discard with household
waste. Check with your local authorities, service
center, or dealer for safe disposal/recycling facility.
AIR FILTER
The air cleaner element should be replaced every 50 hours.
Refer to the supplied engine manual and the “Cyclone Dual-
Filter-Element Type” for additional information.
ADDITIONAL ENGINE INFORMATION
Please see the Robin Operator’s Manual for additional infor-
mation about servicing the engine.
The manual also has specic information about specications,
tune-up parts, engine warranty, emission compliance, etc.
Diamond blade
Inspect diamond blades daily for damage, cracks, secure t
to the arbor, loss of segments, warping or overheating. If any
blade shows any of these problems, discard the blade and
never use.
Saw controls
Inspect all controls for proper function daily. Check the engine
on/off switch (J) for proper operation.
J
Belts
Inspect the blade drive belt for cracks or signs of wear. The
belt tension is controlled by belt tensioner and does not require
adjustment. Inspect the belt tensioner for free movement up
and down. Insure the belt tensioner bearings roll freely.
Blade shaft bearings
Lubricate the blade shaft bearings with 3 pumps of Lithium 12
based grease every 50 hours.
MAINTENANCE SCHEDULE
Check guarding, diamond blade, Daily
skid plate, lexan covers, controls and oil levels.
Clean blade block assembly and saw. Daily
Replace air cleaner. Every 50 hours
Replace engine oil. Every 50 hours
Grease blade shaft bearings. Every 50 hours
Check blade drive belt. Every 50 hours
Cleaning
Clean the blade block of any excess concrete build up after
each use. Keep the handle bars and controls clean and dry.
Immediately clean any spilled fuel (H) from the saw. Keep all
openings and slot on the saw clean open so air ows freely
through the engine compartment to insure proper cooling.
H
WARNING
Do not modify the saw! Use only Husqvarna Construc-
tion Products replacement parts. Use of unauthorized
parts may create a danger or damage the engine.

13
As concrete hydrates or cures and begins to set, it develops internal stresses which may cause random cracks. Random
cracks cast doubt on the quality and workmanship of the concrete. Contraction joints are cut in concrete to relieve these
stresses before they seek their own relief in the form of random crack. The Soff-Cut Ultra Early Entry system controls random
cracking through the early timing of a saw cut at predetermined locations to create weakened planes in the concrete that
subsequently crack at the bottom of the cut to relieve stress. Husqvarna sawed contraction joints should be a minimum of
1/8th the concrete depth and a minimum of 1” (25mm) deep. Contraction joints should be sawn as soon as the concrete will
support the weight of the saw and the operator without marking or damaging the concrete. There are many possibilities for
joint layout. Joint layout should be provided, the saw contractor should submit a detailed joint layout for approval prior to cut-
ting. Several factors affect joint spacing including:
• Concrete thickness
• Type, amount and location of reinforcement
• Shrinkage potential of concrete-cement (type, quantity), aggregate (size, quantity, quality), water to cement ratio,
admixtures, concrete temperature
• Base friction
• Slab restraints
• Layout of foundations, racks, pits, equipment pad, trenches, etc.
• Environmental factors - temperature, wind, humidity
• Methods and quality of concrete curing.
Generally, contraction joint patterns should divide slabs into approximate square panels per the recommended spacing
shown.
RECOMMENDED CONTRACTION JOINT SPACING
Concrete thickness, in. (mm) Maximum spacing, ft. (m)
3.5 (90) 8 (2.4)
4, 4.5 (100, 114) 10 (3.0)
5, 5.5 (125, 140) 12 (3.6)
6 (150) or greater 15 (4.5)
At all intersecting cross cuts, install Husqvarna joint protectors at each joint to prevent joint damage. Install an additional joint
protector where the right wheel will cross the joint to prevent concrete damage.
SAWING CONTRACTION JOINTS

14
“ The timing of concrete operations - especially nishing and jointing - is critical”, states a quote from the foreword of
the American Concrete Institute (ACI) 302.1 R-96. It goes on to say that “Failure to address this issue can contribute to unde-
sirable characteristics in the wearing surface as cracking...” (It mentions other problems).
The patented Soff-Cut Ultra Early Entry system has revolutionized the method used to control random cracking. While Soff-
Cut is being specied more today than ever, sometimes the ultra early-entry spec is not always followed on the job site. In
order for the Soff-Cut system and an experienced Husqvarna contractor to do a satisfactory job, four components must exist
to meet the “specication”:
1. A Soff-Cut Ultra Early Entry dry up-cut saw
2. A Husqvarna Excel Series dry-cutting diamond blade
3. A Husqvarna anti-ravel skid plate installed with every new diamond blade
4. An operator skilled in using the Soff-Cut Ultra Early Entry cutting system.
Without this, joints can not be cut clearly enough to control random cracking before it starts, which is what the building owner
is paying for.
The ACI Spec 302.1R-96 says it best:
“Early-entry dry-cut saws use diamond-impregnated blades and a skid plate that helps prevent spalling. Timely chang-
ing of skid plates is necessary to effectively control spalling. It is best to change skid plates in accordance with manufacturer’s
recommendations...The goal of saw-cutting is to create a weakened plane as soon as the joint can be cut...The timing of the
early-entry process allows joints to be in place prior to development of signicant tensile stress in the concrete...”
The Portland Cement Association (PCA) engineering bulletin, Concrete Floors on the ground, also states:
“Proper jointing can eliminate unsightly random cracks. Aspects of joining that lead to a good job are choosing the
correct type of joint for each location, establishing a good joint pattern and layout, and installing the joint at the correct time...
Timing of joint sawing is critical...Lightweight, high-speed, early-cut saws have been developed to permit the joint sawing
very soon after oor nishing, sometimes within 0 to 2 hours...if the cut is sawn within a few hours after the nal nishing,
random cracking can be controlled...”
Husqvarna has the only Ultra Early Entry dry-cutting system (Soff-Cut) which controls random cracking through the early tim-
ing of the cut. With the patented Soff-Cut method, control joints are usually cut within 0 to 2 hours after the nishing process.
Joint cutting should begin as soon as the concrete will support the weight of the saw and the operator at each joint location
and before nal set. If the joints are not being cut within this time frame then the Soff-Cut Ultra Early Entry method is not be-
ing followed and building owners are not getting what they are paying for or the nished product that they expect.
We hope this information is benecial to building owners, general contractors, concrete nishers, saw operators and the
entire industry. For additional information, contact Husqvarna Construction Products at [phone] or [phone], or
see our website www.husqvarnacp.com.
MAXIMIZING THE SOFF-CUT SYSTEM

15
TROUBLESHOOTING
ENGINE WILL NOT START
- Check if there is fuel in the tank and it is the correct fuel.
Make sure there is no water in the fuel.
- Check if the fuel valve is turned to the “on” position.
- Check if the kill switch is in the “on” position.
- Check that the spark plug wire is connected to the spark
plug.
- Engine is ooded. Adjust the choke per the engine owner’s
manual.
- Check the choke is in the “on” position for cold starts. Adjust
the choke per the engine owner’s manual.
- Oil level is too low. Engine is equipped with an oil alert
system that will not let the engine start unless the engine oil
level is within the correct range.
- Check that air lter is not dirty or plugged.
- Check that the blade shaft rotates freely and no concrete has
built up in the blade block.
ENGINE RUNS ROUGH, BACK FIRES OR CAN NOT
REACH FULL SPEED
- Check if there is fuel in the tank and it is the correct fuel.
Make sure there is no water in the fuel.
- Check for correct oil level. Engine oil alert system may
function intermittently if oil level is not within the correct
range.
- Check that air lter is not dirty or plugged
- Check that spark plug is clean and properly gapped.
- Check that throttle lever is properly set
- Check the choke is in the “on” position for cold starts. Adjust
the choke per the engine owner’s manual.
- Oil level is too low. Engine is equipped with an oil alert
system that will not let the engine start unless the engine oil
level is within the correct range.
BEVEL OR RADIUS CUT INCONSISTENT
- Check to see if the diamond blade is worn out, glazed,
warped or damaged.
- Insure front and rear guide wheels can move freely up and
down without binding.
- Insure front and rear guide wheels can spin freely.
- Do not push the saw too fast. Sawing too fast will cause the
blade to ride up out of the concrete.
- Make sure the guide wheels are aligned in the pre-existing
saw cut before starting.
- Make sure the existing saw cuts are clean and free of debris.
- Check lexan covers for free movement up and down.
- Insure there is spring down pressure on each guide wheels.
- Do not twist or move the saw sideways while cutting.
- Check that the engine is running properly and at full throttle.
- Check belt and belt idler for proper tension.
- Insure the diamond blade is properly mounted and secured
with clean anges.
- Insure the slab is in clean with no debris that could raise the
saw while cutting.
- Clean excess concrete debris from the blade block assembly.
- Check that the scrapers in the blade block are not bent or
binding.
- Insure that the blade block shafts are not bent or damaged.
- Re-cut the joint in the opposite direction.
SAW PULLS TO ONE SIDE WHILE SAWING
- Check front and rear guide is properly aligned with the center
of the diamond blade.
- Check to see if diamond blade is worn out, glazed, warped or
damaged.
- Do not twist or move the saw sideways while cutting. Make
gradual changes in pressure on the handlebar to control the
saw in the cut.
- Insure that all wheels rolls freely and smoothly.
- Do not force the saw. Allow the diamond blade to cut at its
own rate of speed.

16
TECHNICAL SPECIFICATIONS
Weight and Dimensions 150D
Weight – dry 96 lbs 43.5 kg
Weight with gasoline and oil full 100 lbs 45.4 kg
Length (handle folded in) 34 inch 864 mm
Width 19 inch 483 mm
Height 21 inch 533 mm
Blade
Material cut Control joints on cured concrete only
Blade type 6.0 inch (152 mm) ProEdge Radius and Bevel blades
Blade rotation Counter clockwise, upcutting
Blade shaft speed 4450 rpm
Cutting distance from wall 4.5 inch 114 mm
Engine: Robin EX 13
Engine oil volume 0.6 quarts 0.6 liters
Gasoline tank volume 0.7 gal 2.7 liters
Type Air cooled, 4-cycle, single slant cylinder, overhead
camshaft, gasoline engine
Air lter Cyclonic type
Oil system Oil alert with auto shut down sensor
Mufer Silent type 75 dbA, exhaust deector, spark arrestor
Emissions Complies with EPA Phase 2 and CARB Tier II USA
regulations
Cooling Air cooled with internal and external cooling ns
Cylinder Aluminum with cast iron liner
Controls Engine manual throttle, choke and fuel shut off levers,
manual on/off switch
Starting system Manual recoil starter with automatic mechanical
compression release and zero kick back
CALIFORNIA AIR RESOURCES BOARD (CARB): This machine is considered a preempt Off-Road
Application as relating to CARB standards. Under construction equipment, and in particular, as a Saws :
concrete, masonry, cutoff, with engine power less than 19KW (25hp), CARB standards do not apply to this
machine.
For more information see the website http://www.arb.ca.gov/msprog/offroad/preempt.htm
CONFORMITY CERTIFICATES

17
WARRANTY
HUSQVARNA EQUIPMENT WARRANTY
New 150D sold by Husqvarna Construction Products are warranted to be free from manufacturing defects in nor-
mal service for a period of six (6) months for labor and up to one (1) year on parts from date of purchase by the
original consumer purchaser or date of introduction into rental company eet.
Our obligation under this warranty is expressly limited to the replacement or repair at Husqvarna Construction Prod-
ucts, or at a service facility designated by us, of such part or parts if inspection shall disclose it to have been defec-
tive.
This warranty does not apply to defects caused by damage, unreasonable use, faulty repairs made by others (or
defects caused by failure to provide reasonable maintenance, while in the possession of the consumer). Further, the
warranty is void if the product, or any of its components, are altered or modied by the consumer purchaser, or if the
product is used in an inappropriate manner not recommended by the manufacturer.
The use of any other blade except Husqvarna Construction Products blades and skid plates will void the warranty
and could cause internal damage to the motor.
In no event shall Husqvarna Construction Products be liable for any indirect, incidental or consequential damages
from the sale or use of the product. This disclaimer applies both during and after the term of this warranty.
This warranty gives you specic legal rights and other possible rights, which may vary from state to state. Some
states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or
exclusion may not apply to you. Some states do not allow limitations on how long an implied warranty lasts so the
above limitation may not apply to you.
WARRANTY ON ENGINE
Husqvarna Construction Products does not perform warranty repairs or reimburse for warranty repairs on engines.
Engine warranties are provided by the engine manufacturer.
To obtain warranty repair: Take your engine along with your proof of purchase to any general purpose dealer or dis-
tributor nearest you.
If you are unable to obtain warranty service or are dissatised with the warranty service you received, contact the
owner of the dealership involved. Normally, this should resolve your problem. For further assistance, call our parts
and service department at 1-800-776-3328 or 1-951-272-2330.
COPYRIGHT 2009 HUSQVARNA CONSTRUCTION PRODUCTS
Covered by one or more of the following U.S. Patents
4769201, 4889675, 4928662, 4938201, 5056499, 5086750, 5184597, 5303688, 5305729, 5373834, 5441033,
5505189, 5507273, 5570677, 5575271, 5579754, 5582899, 5603310, 5660161, 5664553, 5666939, 5689072,
58030371, 6892719, 6990972, 7073495, 7163010, 7258115.
Other U.S. and foreign patents pending.
WARRANTY ON REPLACEMENT PARTS
There is a three (3) months warranty from date of purchase on all replacement parts.

2009-03
505 41 78-10
Printed In U.S.A.