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Mecanil Troubleshooting Guides

***The machine must always be turned off during service and repairs***

Troubleshoot the Bar Oiler

How to check if the bar oiler is working properly - NOTE! Remember to keep a safe distance from the saw bar and saw chain!

  • Tilt the grapplesaw so that the bar oiler pump is visible and accessible. The bar oiler doesn’t need to be removed from the grapplesaw.
  • Unscrew the plug in the middle of the oil pump. *(marked with a red arrow in the picture)
  • When the oiler is in a neutral position, you can see a part of the piston on the left side and part of the spring on the right side (see picture)
  • When you active the saw, the piston should move to the right, in the direction of the arrow. When you stop the saw, the piston should automatically move back to the neutral position.
  • If the piston doesn’t return to the neutral position, but remains in the far right position, there is still pressure in the oil pump.
  • Loosen the fitting coming from the hydraulic hose 400-220925 (on SG160 400-220976). If the piston returns to it’s neutral position when the pressure is relieved, the pump is working as it should. However, there is residual pressure in the hydraulics system that is preventing the piston from returning to it’s neutral position. This could be a result of several different reasons, one could be that there is the wrong type of valve to grapple open/close function on the machine that the grapplesaw is mounted to. Another possibility is that there is a diverter valve on the line to the grapple function that is preventing the hydraulic pressure to equalize.
  • If the piston is still in the far right position, remove the bar oiler and clean it. (be careful when dissembling as the piston is under pressure from the spring and will release.) If it still doesn’t work after cleaning, the bar oiler needs to be replaced.

NOTE: For safety reason, remove the saw bar and chain before proceeding with this step.

  • It is difficult to see with the naked eye if there is oil coming to the saw chain since the amount is very small.
  • To check this, remove the lubrication hose(400-220937) going to the saw bar attachment and hold it over a container. When sawing, you should get 2ml of oil per saw activation.
  • If the oil is pumping as expected through the hose,, please check the saw bar attachment for debris in the elbow fitting and channel leading the oil to the saw bar.

The first step is to check if your bar mount plate is bent. If the bar mount plate is bent, the bar will cut at an angle and stop part way through.

  • Tilt up the grapplesaw so it looks like the picture.
  • The bar should be in the middle of the cage, where the yellow dotted line is.
  • If the bar mount is bent, the bar will either be above or below the dotted line.
  • If the bar mount is bent slightly, it can be bent back using the steps below.
bent bar mount 1

Approximately 90% of the time this problem can be solved by changing to a brand new bar and chain. Even if you think the bar and chain are fine, please install new ones!! This can save a lot of time and money.

please try new bar and chain
  • When pressing the buttons on the yellow grapplesaw remote, a green LED should illuminate on the remote.
  • If there is no LED illuminating, check the switch on the back is turned on.
  • If the switch is turned on, change the batteries in the remote and try again.
  • After changing the batteries and the LED still does not illuminate, the remote will need to be replaced.

If the remote is functioning properly, you will now need to check if the battery has the proper voltage.

  • Try replacing the current battery with a fully charged battery. If possible, check the voltage on the battery. A fully charged battery should be around 13.4V. Sometimes the battery charger will show a green LED instead of red, even if the battery isn’t charged.
  • If your charger is showing a green LED when the battery is not charged, try a new battery on the charger. If the same issue happens with the new battery, the charger is likely defective and must be replaced.

If a new battery does not fix the issue, you will need to check if the receiver is receiving power from the battery.

  • Remove the protective cover on the grapplesaw. Remove the plastic cover on the receiver to access the receiver board.
  • If the receiver has the LED6 illuminated solid orange and LED7 blinking red, it is receiving power and paired properly.
  • If the receiver has other LEDs illuminated or just has LED6 illuminated, you will need to re-pair the remote with the receiver.
  • If re-pairing the remote does not work, the board may be faulty and needs to be replaced.
  • If there are no LEDs illuminated, the board is either not receiving power or the board is faulty. (Look closely at the board for any burn marks. If there is a burn mark you will need to replace the board)
  • Confirm power is coming to the board by measuring the voltage coming in at terminal 1 with a voltmeter. It should read the same or close to the same voltage as the battery.
  • If it is receiving a lower voltage or no voltage, there is an issue with the power cable coming from the receiver to the battery or the cable attached to the battery.
  • Replace the cables

If one of the functions is not working please follow this guide. If all functions are not working, follow the guide above, “Saw Cut and Tilt Both not Responding”

  • Remove the protective cover on the grapplesaw. Remove the plastic cover on the receiver to access the receiver board.

When you press a button on the yellow remote, it sends a signal to the grapplesaw receiver, which then activates the coil on the Vickers valve in the grapplesaw. 

  •  Press the button on the yellow remote, look at the receiver and see if the LED lights up when you press the button. If it lights up, the yellow remote(transmitter) is communicating with the receiver in the grapplesaw. At the same time, the LED on the vickers valve should light up. If it does not light up, check the cable going from the vickers valve to the receiver. Make sure the wires are tight on the bus bar on the receiver. Loosen the screw on the plug that is connected to the vickers valve and remove it. Check for any burning or corrosion on the plug. If there is corrosion or burning, you will need to replace the plug with a new one.
  • Please note, there is a small chance the LED can be burned out. To double check that the vickers valve is getting power,  you can measure if there is any voltage coming from the plug when you press the button on the transmitter. If there is voltage, then the vickers valve is not operating properly and you will need to replace it.
  • If the LED on the vickers valve lights up when pressing the button on the transmitter, you will need to remove the vickers valve and check for debris that could be blocking the flow. If there is no debris, the vickers valve may be broken and needs to be replaced.

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