Troubleshooting a Concrete Saw

Concrete saws are a great asset for your business. They are convenient and handy tools to have around for different uses and sawing techniques. If proper maintenance is not performed on time, the results can be very expensive and time-consuming. It all comes down to preventing the most frequent issues with your concrete saw at the right time. Next, we list the six most common problems a troubleshooting guide for concrete saws. Take a look at the following guide before you throw in the towel and decide to replace your equipment.  

1.   Engine will not start: 

A. Emergency stop button is activated: Pull the emergency stop button. 
B. Fuel tank is empty: Verify that there is enough fuel in the tank. 

Note: Use octane gasoline. (We recommend Octane 87+ Gasoline).
Replace oil regularly to ensure longevity. We recommend to add SAE10W-30 Oil.

C. Fuel filter clogged: If the fuel filter or fuel lines are clogged, replace them.

Note: Change the gasoline in the gas tank. Old gasoline can clog up the carburetor, making it difficult to start the engine.  

D. Check for failing battery connection: Be sure to clean and tighten battery cables
E. Main circuit breaker has fallen: Identify a short wire issue if the copper inside deteriorates and/or splits. 
F. Weather conditions: If the machine is used in cold weather, pre-heat the engine with a spark plug.  
G. Engine malfunction: Read and refer to the engine manual instructions.

2.    Saw will not lower: 

A. Battery worn out: Test your battery, and charge it. Otherwise, replace it. 
B. Defective lower button: Check if you notice cracks, then replace lower button. 
C. Wrong blade: Ensure the blade matches the desired application, otherwise contact the blade manufacturer. 

3.    Saw will not raise:

Defective raise button: Check raise button, if it is worn out, replace it. 

4.    Engine starts too slow/too fast: 

False start: If your starter rope pulls without any resistance, you can remove the starter assembly. 
Note: Clean the starter assembly or replace the starter by adding lightweight oil, and place it back. 

5.    Gauging compression: 
Lack of piston resistance: Piston rings can possibly be worn or the piston itself could be scoring. 

Note: Use a compression gauge to find the Pounds Per Square Inch (PSI). The ideal PSI for your saw is 160, anything less than 125 means a piston damage.

6.    Short belt life: 

A. Loose belts: Can cause slippage, check belt tension regularly. 
B. Sheaves are misaligned: Use straightedge to check proper alignment of the blade shaft sheave. 
C. Belts contacting pavement: Fix axle maximum depth in the front stop bolt for belt clearance. 
D. Mismatched belt: Replace the full belt set.

Note: Never mix old with new belt sets. 

E. Power Take Off (PTO) is overheated: Check belt tension and lubricate PTO.

Note: We recommend lubricating PTO approximately every 20 hours after using the concrete saw. 

These are the six most common problems with concrete saws that are not impossible to fix. Concrete saws require regular maintenance, which you can learn more about in our blog “Concrete Saw Maintenance Tips.” In case you are not sure how to fix your machine, you can take your concrete saw to a professional and have it repaired. You can also contact us if you have questions associated to troubleshooting at Undergoing through any of these tasks can take some time, but it will save you money if you addressed them properly and on time. 

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