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Drive belt tension
Both Hydraulic pump and flywheel V belts must be checked for tension and
condition. If any belt shows signs of wear, surface damage, shredding, excessive
glazing, or have been stretched to their limit, they must be replaced. Multiple belt
drives must have all belts replaced at the same time. Belts that are too slack will
cause poor cutting performance, excessive belt and pulley wear.
All drive belts are located under the engine cover as shown in and tension checked
at arrows as shown. Check and set tension as follows:
1. Slacken clamp screw(s) or nut.
2. Hydraulic pump adjuster screw requires its lock nut to be slackened.
3. Turn adjuster nut or screw to tension belt until 4.5Kg force at the belt longest
centre span deflects by 6mm. Can be approximated by firmly gripping belt
between finger and thumb and twisting. The belt should not be able to be
rotated more than 90°.
4. Tighten all lock nuts, nuts and clamp screws.
5. Run machine and test.
6. Check belt tension.
Figure 9
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