Jacobsen JMP653F, Руководство пользователя

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8 MAINTENANCE AND LUBRICATION
8.22 INSPECTING BLADES__________________________________________________
Inspected the blade in accordance with the maintenance chart or when the cutting unit is removed from the
mower, carefully inspect the blades to make sure the blades are in good condition. Replace any blade that has
bends, grooves or cracks.
A bent blade can have a small crack that can increase and cause a piece of the blade to break. The bent blades
can cause vibration and other stress on the mower.
The dust or sand particles can wear a dangerous groove in the blade between the air vanes and the flat part of
the blade. The groove can quickly increase in size and allow a piece of the blade to break.
8.23 SHARPENING BLADES_________________________________________________
Put a wooden block between the blade and cutting unit housing to prevent the blade to rotate.
When you prepare or sharpen the blade, do not follow the original grind pattern. Grind new cutting edges at an
angle. If the maximum of one half inch (13 mm) blade loss has occurred, do not sharpen more, replace the blade.
To stop blade balance problems, make sure an equal amount of material is removed from both ends of the
blades. A blade that is not balanced will cause vibration and can damage the mower. Use a blade balancer to
check the blade after you sharpen.
Torque center blade bolt to 75 to 90 ft.Lb. (100 to 120 Nm).
CAUTION
Be careful when you check blades to prevent pinching hands and fingers between ends of the blades.
WARNING
Never try to correct or repair a damaged blade. Always replaced a damaged blade.
The bends, grooves or cracks can cause a piece of the blade to become loose and be discharged from the
mower. The broken blade pieces can cause injury to persons or property damage.
WARNING
The cutting unit blades can have sharp edges. To prevent injury, use caution when you service or hold the
blade.
When you remove more than one half inch of material, the blade tip can break and be discharged from the
mower. The broken blade pieces can cause injury to persons or property damage.