Frequently Asked Questions

1. How is it wearing?
Front or back heavy? Machine leveling issue. Ensure the bubble level is centered on your grinding surface.
- On a fixed rear axle machine, have the wheels worn down substantially?
- Is the shaft seated properly on the spacer between the bearing and the hub assembly?


Left or right? Follow with the below questions:
2. Wheels even? (Ensure by putting a tape measure on each wheel)
3. Is it a diamond disc? Or a multi-accessory disc?
4. Tool/s have even wear?
5. Disc shaft square to the bearing bracket (under the hood)?
6. Have any of the parts in this disc assembly been repaired/replaced?
   - If so, was the disc assembly bought in parts? Or total assembly?
   - If bought in separate parts, was the hub/disc leveled when assembled?
7. Is the axle/fork on the rear of the machine bent? Has the machine been dropped?
8. Have the neoprene rings in the hub assembly worn? (A lot of disc flex will be present)
9. Bolts in hub assembly, have they sheared?
10. What's the grinding application? (Perpendicular approach to unevenness, NOT parallel)
In most cases, when a 120 grit tool is used and the surface is not leaving the smooth finish that is normally left behind after using a 120 grit tool it is because of skipped processes. It is required of the customer to use a 70 grit accessory in between the 30 grit grinding and the 120 grit grinding to remove the 30 grit scratch marks. The proper steps are 30 grit, 70 grit then 120 grit.
We currently manufacture only one machine that can polish concrete, which is our Dual-Disc Heavy Duty grinder (2D-HDP or 2D-HDE). Our low speed and turbo grinders will not competently polish concrete, these machines do not have the weight, speed or disc layout required for concrete polishing. The standard slow speed and turbo grinders can be used however to refurbish, refinish or re-purpose concrete by following the chart below.
The Magna-Trap retrofit kit allows customers with a wood wedge style grinder or "classic" style grinder to adapt their machine to accept the EDCO Multi-tooling disc which accepts Magna-trap low profile accessories as well a multitude of other trapezoidal accessories.
There is not a scientific method to removing the bolts holding the disc on to the machine.
There are many different reasons why the disc seems "seized" on to the disc mounting plate. There could be concrete slurry (dust & water mixture), rust or something else acting as a locking substance keeping the mounting hardware from coming loose.

The best method we have seen customers use to remove the disc mounting hardware is to use a bolt extractor (Easy Out). If this doesn't work, we have seen customers drill the screws out to remove them. Also, customers heat up the hardware and this helps loosen the mounting hardware for easier removal.

The best way to prevent this from occurring is to wash/clean the grinding disc assembly after every rental/use.
We set the belts on our machines with approximately ¼" to ½" of belt deflection. If the belts are too tight it will cause strain on the motor/engine and in some cases not allow the motor/engine to start its rotation cycle.
Every EDCO machine is different when it comes to maintenance.

Please visit our Parts Lists & Manuals page (www.edcoinc.com/manuals&partslists) to the machine specific parts list and operators manual where you will find information on how to tension the belts and align the pulleys on your EDCO machine.
EDCO machines feature primarily Baldor and Leeson motors which can be configured to run with 115v or 230v power sources. Most of these motors have a diagram depicted on the outside of the motor case, normally located near the junction box. These diagrams have different schematics locating the required connections for High Voltage (230v) or Low Voltage (115v). Ensure you have checked the polarity of the motor before adjusting the motor to guarantee that it remains in the same polarity once this adjustment is completed.

Also ensure the plug on the cord from the switch of the EDCO machine is rated for the voltage increase if adjusting from 115v to 230v. Most of our machines wired for 230v feature a twist-lock plug combination rated for 250v (#40037 & #40000)
  • Put shaft assembly through both bearings.
  • Tighten the bottom bearing (inside the shroud).
  • “Snug” or half-tighten two of the four bolts holding the top bearing in place, two opposites.
  • Square the disc shaft off of the bearing mount bracket in two places (90° from each other), see photos.
  • Tighten top bearing in place.
  • Shaft should freely slide through the two bearing without any resistance.
Based on your serial number of the machine, please see the below parts list addendum that shows the parts required to put a dust skirt on the classic style EDCO grinders manufactured between 1991 and 2005.
Yes. See below for the parts diagram and retrofit instructions.
Based on our customer feedback and data, we have collected that our 33 Lb. propane tank (#50473) operates under normal operating conditions for approximately 1.5 hours. Our 20 Lb. propane tank (#15130) operates under normal operating conditions for approximately 1 hour.
Gasoline or propane powered equipment should not be used in enclosed or partially enclosed areas. Gasoline and propane is extremely flammable and poisonous. Small gasoline engines produce high concentrations of carbon monoxide (CO) example: A 5HP 4 cycle engine with operation in an enclosed 100,000 cu. Ft. area (100' x 100' x 10') with only one change of air per hour is capable of providing deadly concentrations of C0 in less than fifteen minutes. The same area with 5 air changes per hour is capable of providing noxious fumes in less than 30 minutes. Please see your machine specific operator's manual and parts list manual for more information.
Part numbers that are detailed on the capacitor itself will be the best signifier.

However, a rule of thumb for EDCO machines is that the start capacitor is encased in plastic as where the run capacitor is encased with a metallic material. Another distinguisher between the two capacitors is the "uF" rating on each of the capacitors, a start capacitor has a much higher uF rating than a run capacitor.
The best calculator for generator requirements is to triple the horse power of the machine and that is the suggested kW of the generator you should use with your EDCO machine. Our TG-10 grinder has a 5 hp electric motor on it, which we recommend is paired with a 15 kW generator.

Ensure that the calculated kW is dedicated to the particular machine. Do not attempt to plug a grinder and a vacuum to the generator when the generator is only rated to operate the grinder. This can cause damage to both of the machines by under powering the machines and starving the motors for power causing the motors to overwork and burn through its capacitors and potentially damage the internals of the motor.
If you replacing the contactor only, ensure you have the color of your existing contactor, as you must replace it with the same color contactor. If you have an older style Baco brand e-stop these are no longer available and must be replaced by a Lovato part (See the diagram below). The contactors on the Baco switches are replaceable and we still carry some of these parts in our inventory, however the switch button itself is not replaceable and we recommend obtaining the retrofit kit (#51423) described below.
Some of EDCO saws are designed and have the capability to make multiple cuts with one pass. What is required to set up multiple blades in an additional blade guard, blade retaining cap, arbor nut, arbor washer and additional parts required to deliver water to the additional blade guard. The EDCO current machines that are capable of parallel or multiple blade cutting are: DS-18, SS-20, SS-24, SS-26.

We also offer custom designed blade guards for customers who need to cut with 2-3 blades on the same side of the machine with spacing in between the blades. If you have any questions about this please contact EDCO's technical support. techsupport@edcoinc.com
There are times that the mechanism responsible for engaging the drive system on the saw is not tightened completely. Ensure that the hardware pictured below is fastened tightly, if there is looseness present it is not going to work properly and allows for the lever to be moved and not engage the drive linkage. If this is the case, tighten the hardware and make sure the linkages are set properly so that when the lever is in the neutral position that the saw does not move in forward or reverse.
The main cause for the pump not activating upon engaging the switch is that the switch has become disconnected from the wiring harness. See picture below for a visual for where to check to ensure proper connection between the three wires from the wiring harness to the switch. If one of the features (movement up or movement down) is disabled but the other feature still works, it could be one of the wires on either side of the center wire. If the center wire is detached there will be no power to the switch.

If the hydraulic system does not release the machine down out of the raised position, check to ensure the black box (circled in blue below) is getting power.

The set screw (circled below in red), is the adjustment setting for the pressure of the hydraulic system. If the system is not raising the machine or struggling to raise the machine, fine adjustments can be made to this screw.
The toggle switch on the blade saver has to be in the dry position to start the saw. DO NOT flip the Blade Saver toggle switch to Wet Cut until water pressure has been applied and the engine has been started. This does not apply to the SS-26E.
EDCO self-propelled saws have a linkage system between the drive lever and the transmission that require fine adjustments during initial assembly. In some cases the linkages become loose and can cause the issue you may be experiencing. See the picture below, ensure that the control arm mounted to the transmission is in the neutral position when the lever on the console is in the neutral position and that all mounting hardware is fastened tightly.

EDCO C-10 has the optional straight cut wheel kit (#49015) which is available for purchase. This kit mounts in front of the caster wheels near the front of the machine and elevates the machine past the point of where these caster wheels contact the surface, allowing the machine to track in a straighter fashion and for easier transportation.
Per Table 1, Specified Exposure Control Methods When Working with Materials Containing Crystalline Silica, to be OSHA compliant with an EDCO Masonry Saw, "the saw must be used with the integrated water delivery system that continuously feeds water to the blade."
We recommend going directly from pan-to-bag when using our vacuums and disposing of these bags in an approved location. The most important part about concrete dust disposal is disposing of the dust in proper thickness bags to avoid bags from becoming damaged and leaking hazardous dust clouds. We do offer 6 mil bags for purchase (ED970503).
There are several filter options on modern EDCO vacuums, the MicroClean filter (white accordion filter), the HEPA 2.0 filter, HEPA MAXX.

For the standard MicroClean filter: Knock the material off of the filter via the hand shaker on the machine, motorized shaker or reverse pulse. Remove any material between the pleats, by hand only. DO NOT USE ANY PRESSURIZED WATER/AIR EXCEEDING 15PSI on these filters. The best method to clean this filter is to use another vacuum to remove the dust. Inspect the filter for tears or material blockage, if there are tears present the filter needs replaced. MicroClean filters should last several years with proper maintenance and care, these filters also feature a 3 year guarantee from the manufacturer.

HEPA 2.0 filters do not have a lifespan rating, as they only capture the smaller particles of silica dust and there is not enough data relevant to the lifecycle of these filters to advise a replacement schedule on these filters. However, as long as these filters are maintained and free of tears this filter does not need replaced for several years. Use the same methods from cleaning the standard MicroClean filter to clean the HEPA 2.0 filters.

HEPA MAXX filters are equipped with a differential pressure gauge. The gauge measures the pressure above against the pressure below the filter, thereby measuring the restriction of airflow due to contamination. HEPA filters should be replaced when the gauge consistently measures 8 inches W.C. Consult your operator's manual and parts list for instructions and parts required to replace the HEPA MAXX filter.
EDCO masonry saws are equipped with submersible water pumps; either a belt driven pump on gas model EDCO masonry saws or electric pumps on electric EDCO masonry saws. These pumps are put through rigorous conditions but have proven themselves over time with proper maintenance and operation. Some common issues we have seem with customers is that:
  1. The screen and/or tubing on the water pump system has become clogged with debris.
  2. The drive wheel on the belt driven pump is not fully engaged on the driving belts. (Pictures below)
  3. The gaskets within the water pump could potentially have been torn or are not seated properly (See parts list breakdown for your machine).
A standard EDCO core drill rig will accept up to an Ø12" bit without any additional adapters. Part number 97060k can be purchased, which features adapters to space the drill away from the center mast enough to fit an Ø14" drill bit. Part number 97061k can be purchased, which features the adapters required to space the drill away from the center mass enough to fit up to an Ø16" drill bit. So, the maximum core bit diameter able to be used on an EDCO core drill rig with the proper adapters is Ø16".
The shear pin is there to protect the drill motor from being damaged. If the shear pins are continuously breaking there are a couple processes to check before looking at faulty shear pins.
  1.  Ensure you are using the proper speed with the proper size bit (high speed for any bit smaller than Ø4", low speed for any bit larger than Ø4")
  2. Ensure the bit has the proper diamond bond for your application. (Rebar present, soft/hard concrete)
  3. If the operator is forcing the bit in to the concrete, keep an eye on the amp meter and ensure you are drilling around the motors amperage rating and not exceeding the rating. This could potentially damage the motor as well.
  4. If this is a reoccurring issue, we do offer a clutch drill motor for the core drill rigs. However this is not retrofit-able and requires the purchase on a new drill motor.
EDCO does not recommend the repair of any machine while it is suspended by the lifting bail. Never work under equipment without first properly securing the equipment to prevent it from moving or falling and also always work on a flat and level surface.
Based on the 2012 EPA EVAP regulations, we are no longer allowed to offer a vented fuel tank cap. If you are looking to replace a vented fuel tank cap, the new gas tank system is required to retrofit to the current EPA standards. See the below parts bulletin for information.
There are several air powered machines that EDCO offers. Below is a list of requirements for different EDCO machines and their respective air compressor requirements:

CD-3 - 100CFM @ 100 PSI
CD-5 - 160CFM @ 100 PSI
ASB-14 - 180CFM @ 100 PSI
ALR Chisel Scalers - 6-8CFM @ 90 PSI
Big Stick Chisel Scalers - 12-15CFM @ 90PSI
Dual-Disc Grinders: Lubriplate 630-2 Grease
Turbo Grinders: Lubriplate 930-AA Hi Temp Grease
Motor Oil For Gas Engines: 10W-30
Motor Oil for Diesel Engines: 15W-40
Chisel Scalers Lubrication: Dexron III ATF
Hydraulic Pumps on self-propelled units: Dexron III ATF
Scabbler machine oil: Pneumatic Oil
GX160 - .83 Gallons
GX200 - .83 Gallons
GX240 - 1.4 Gallons
GX270 - 1.4 Gallons
GX340 - 1.6 Gallons
GX390 - 1.6 Gallons
GXV160 - .4 Gallons
GXV340 - .4 Gallons