TROUBLESHOOTING
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem.
When diagnosing faults in operation of the pole chain saw, always make sure the hydraulic power source is supply- ing the correct hydraulic flow and pressure as listed in the table. Use a flowmeter know to be accurate. Check the flow with the hydraulic fluid temperature at least 80 °F/27 °C.
PROBLEM | CAUSE | SOLUTION |
Cuts slow. | Insufficient fluid flow or low relief | Adjust fluid flow to proper gpm. For |
| valve setting. | optimum performance adjust relief |
|
| valve to 2250 psi/155 bar. |
| Chain dull. | Sharpen per instructions or replace. |
| Should not exceed 250 psi/17 bar at | |
|
| rated flow measured at the end of the |
|
| tool operating hoses. |
Bar turns color. | Insufficient oiler flow. | Adjust oiler per service instructions. |
Tool does not run. | Power unit not functioning. | Check power unit for proper flow and |
|
| pressure |
|
| psi/104 bar minimum for CS28. |
|
| |
|
| minimum for the CS25. |
| Coupler or hoses blocked. | Remove obstruction. |
| Mechanical failure. | Disassemble tool and inspect for |
|
| damage. |
Tool runs backwards. | Pressure and return hoses reversed. | Correct for proper flow direction. |
|
| Motor shaft rotates clockwise. |
Oil leakage around drive | Motor shaft seal failure. | Replace as required. Make sure that |
sprocket. |
| oil present is not the result of excess |
|
| oiler flow. |
On/Off trigger is hard to press. | Pressure and return hoses reversed. | Correct for proper flow direction. |
| Should not exceed 250 psi/17 bar at | |
|
| rated flow measured at the end of the |
|
| tool operating hoses. |
Motor sections oil leakage. | Motor face seal failure. | Replace as required. |
18 ► CS25/28 User Manual
