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14 ► CO25 User Manual
OPERATION
CUTOFF WHEEL REPLACEMENT
1. Move the hydraulic system control valve to the Off posi-
tion.
2. Disconnect the hydraulic hoses from the tool (rst the
input (supply) hose, then the output (return) hose).
3. Install the inside collar and blotter, rotate the collar to
align the slot in the collar with the pin on the thrust collar.
4. The maximum rated speed of the hydraulic cutoff saw
is 4500 rpm. Never install a cutoff wheel that is not rated
equal to or greater than that of the tool to ensure the integ-
rity of the wheel at the maximum tool speed.
5. Prior to installing the wheel, inspect it for chips, cracks or
other damage and replace if damaged.
6. Install the outside blotter and collar, rotate the collar so
that the at on the motor shaft aligns with the at on the
outside collar.
7. Install the wheel nut using a wrench while gripping the
cutoff wheel. Tighten securely.
COLD WEATHER OPERATION
Before using the tool in cold weather, preheat the hydraulic
uid with the power unit operating at a low speed. The oil
should be at or above 50°F (10°C) with a viscosity of 400
SSU (82 cs) before operating the tool.