Husqvarna X 4000 Manual

							11
OTHER 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.
Diamond blade
Inspect diamond blades daily for damage, cracks, secure fit 
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 all the in-
terlocks for operation especially the engine on/off switch 
for proper operation.
Belts 
Inspect the blade drive belt and transmission 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 bear-
ings 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, the transmission Every 50 hours
drive belt and belt tensioner.
Replace the fuel filter.                  Annually
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 from the saw. Keep all 
openings and slot on the engine shrouding on the saw clean 
open so air flows freely through the engine to insure proper 
cooling.
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.
Skid plate
Inspect the skid plate daily for damage, excessive wear in the 
blade slot, burrs on the concrete surface side, twisting and free 
movement up and down when installed on the blade block. 
Replace the skid plate with each new diamond blade. Never 
reuse the skid plates or spalling and raveling may result.
Battery
The battery is maintenance free. If the battery ever requires 
charging, use only a voltage regulated taper current charger 
designed specifically for sealed lead acid gel cell batteries 
rated at 2 amps or less (part # 505583501). A standard auto-
motive, or any other type, battery charger not designed specifi-
cally for sealed gel batteries will cause permanent damage to 
the installed battery and void any warranty. Do not leave the 
ignition key in the “ON” position as this will drain the battery.
WARNING 
- Connecting and disconnecting a battery can cause 
sparks and short circuits.  Do not short battery ter-
minals by allowing a wrench or any other object to 
contact both terminals at the same time. 
- A spark or flame can cause a lead acid battery to 
explode.
- Before connecting a battery, remove metal  
bracelets, wristwatch bands, rings, etc.  Use gloves 
and protective glasses or face shield when working 
with a battery.
Eye ProtectionExplosion DangerProtective Gloves 
						

							12
As concrete hydrates or cures and begins to set, it develops internal st\
resses which may cause random cracks. Random 
cracks cast doubt on the quality and workmanship of the concrete. Contra\
ction 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 location\
s 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. Contracti\
on joints should be sawn as soon as the concrete will 
support the weight of the saw and the operator without marking or damagi\
ng 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 ea\
ch 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 
						

							13
“ The timing of concrete operations - especially finishing 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 m\
entions other problems).
The patented Soff-Cut Ultra Early Entry system has revolutionized the method used to con\
trol random cracking. While Soff-
Cut is being specified 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 satisfactor\
y job, four components must exist 
to meet the “specification”:
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 cra\
cking 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 accordan\
ce 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 significant 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 patte\
rn 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 floor finishing, sometimes within 0 to 2 hours...if the cut is sawn within a few hours after the final finishing, 
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 finishing process. 
Joint cutting should begin as soon as the concrete will support the weig\
ht of the saw and the operator at each joint location 
and before final 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 finished product that they expect.
We hope this information is beneficial to building owners, general contractors, concrete finishers, saw operators and the 
entire industry. For additional information, contact Husqvarna Construction Products at\
 (951) 272-2330 or (800) 776-3328, or 
see our website www.husqvarnacp.com.
MAXIMIZING THE SOFF-CUT SYSTEM 
						

							14
TROUBLESHOOTING
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 that the spark plugs are clean and properly gapped.
- Check that choke is in the “off” position after engine is warm.
- Check that air filter is not dirty or plugged.
- Check that the throttle lever is properly set.
ENGINE WILL NOT START 
- Check that the rocker switch is in the “on” position.
- Check if there is fuel in the tank and it is the correct fuel.  
  Make sure there is no water in the fuel.
- Check that the spark plug wires are connected to the spark  
  plugs.
- Engine is flooded. Adjust the choke per the engine owner’s  
  manual.
- Check that the air filter is not dirty or plugged.
- Check the choke is in the “on” position for cold starts. Adjust  
  the choke per the engine owner’s manual.
- Check that the blade shaft rotates freely and no concrete has  
  built up in the blade block.
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.
- Check the skid plate for damage or burrs.
- Insure both driver tubes are contacting the rear wheels, 
  driver tubes are clean and rear wheels are not damaged.  
  Check that the smaller diameter driver tube is on the left  
  wheel (battery side) and the larger diameter driver tube is on  
  the right side (blade side).
SAW IS SPALLING AND RAVELLING CUT 
- Check to see if the diamond blade is worn out, glazed,  
  warped or damaged.
- Insure skid plate moves freely up and down the entire shaft  
  length without contacting the diamond blade.
- Check skid plate for excessive wear or gap around the  
  diamond blade.
- Check skid plate for tension or loose mounts. Skid plates are    
  preset at the factory.
- Check bottom of skid plate for metal burrs or irregularities.
- Insure skid plate is not twisted or bent.
- Check lexan covers for free movement up and down.
- Insure there is spring down pressure at each end of the skid  
  plate.
- 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 flanges.
- Insure that the diamond blade is the correct specification for  
  your area.
- Insure the slab is in clean with no debris that could raise the  
  skid plate or saw while cutting.
- Use Husqvarna joint protectors at all cut intersections.
- 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.
- Check that the front diverter in the blade block is not bent and  
  the diverter legs are not contacting the concrete. 
						

							EC DECLARATION OF CONFORMITYHusqvarna AB, SE-433 81 Göteborg, Sweden, tel: +46-31-949000, declares under sole responsibility that the Husqvarna Soff-Cut 4000 
dating from 2016 serial numbers and onwards (the year is clearly stated on the rating plate, followed by the serial number), complies with 
the requirements of the COUNCILíS DIRECTIVE: 
• of May 17, 2006 ”relating to machinery” 2006/42/EC
•  of February 26, 2014 ”relating to electromagnetic compatibility” 2014/30/EU.
•  of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.
 
The following standards have been applied: 
EN ISO 12100:2010, CISPR12:2007+A1:2009, EN 13862+A1:2009.
Huskvarna February 26, 2016
 
 
 
 
 
 
Joakim Ed 
Global R&D Director
Construction Equipment Husqvarna AB
(Authorized representative for Husqvarna AB and responsible for technical documentation.)
TECHNICAL SPECIFICATIONS
Engine
Model Kohler Command Pro CH640
Engine oil volume, 
quarts/liters 2/1.9
Gasoline tank vo-
lume, gal/liters  4.5/17
Type  Air cooled, 4-cycle, twin cylinder, hydrau-
lic overhead valves, gasoline engine.
Air filter  Dual element construction duty
Oil system  Full pressure lubrication with spin-on oil 
filter
Muffler  Low noise, front exhaust
Emissions  Complies with EPA Phase 2 and CARB 
Tier II USA regulations
Cooling  Air cooled
Cylinder  Aluminum with cast iron liner
Controls  Engine mounted manual throttle and 
choke levers, manual on/off switch.
Max. engine output, 
hp/Kw (see note 1) 20.5hp @ 3600rpm / 15.3kW@3600rpm
 
Note 1: As specified by the engine manufacturer. The power 
rating of the engines indicated is the average net power output 
(at specified rpm) of a typical production engine for the engine 
model measured to ISO3046. Mass production engines may dif-
fer from this value. Actual power output for the engine installed in 
the final machine will depend on the operating speed, environ-
mental conditions and other variables.
Weight and Dimensions
Weight – dry, lbs/kg 440/200
Weight with gasoline and oil full, lbs/kg 454/206
Length (handle folded in), inch/mm 61/1549
Width, inch/mm 28/711
Height, inch/mm 38/965
Blade
Material cut Green concrete only
Blade type13.5” (343 mm) or 12.0” (305 mm) dry cut 
with tri-arbor
TECHNICAL DATA
Blade rotation Counter clockwise, upcutting
Blade shaft speed, 
rpm3500
Cutting depth 3 inch maximum (76 mm) depending on  blade size and amount of blade wear
Cutting distance 
from wall, inch/mm 3 1/2 / 89 
Average cutting rate - Estimate only. Speed will vary with job 
conditions and concrete mixes.
3 inch (76 
mm) depth2 inch (51 
mm) depth
Soft aggregates, ft/min / m/min 14/4.3 24/7.3
Medium aggregates, ft/min / m/min 11/3.4 17/5.2
Hard aggregates, ft/min / m/min 7/2.1 9/2.7
Blades are available in 13.5 inch (343 mm) and 12 inch (305 mm) 
diameters and in 0.100 inch (2.5 mm), 0.250 inch (6.4 mm), 0.380 
inch (9.7 mm), and 0.500 inch (12.7 mm) widths.
Noise emissions (see note 1)
Sound power level, measured dB(A) 105
Sound power level, guaranteed dB(A) 108
Sound levels (see note 2)
Sound pressure level at the operators ear, dB(A) 90
Vibration levels, a
hv (see note 3)
Handle right, m/s22,7
Handle left, m/s23,8
Note 1: Noise emissions in the environment measured as sound 
power (L
WA) in conformity with EC directive 2000/14/EC.
Note 2: Noise pressure level according to EN 13862. Reported 
data for noise pressure level has a typical statistical dispersion 
(standard deviation) of 4.0 dB(A).
Note 3: Vibration level according to EN 13862. Reported data for 
vibration level has a typical statistical dispersion (standard devia-
tion) of 1.5 m/s
2. 
						

							www.husqvarnacp.com
1153475-262016-02-19
´®z+UOT¶6§¨
´®z+UOT¶6§¨
Original instructions