NAMCO Prop cycle, Operator'S Manual

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7-2 Inspecting or Adjusting the Drive Belt
The mechanism becomes uncovered so take care not to trap hands or
fingers in the mechanism
1) Remove the three security screws (M5x12) and remove the upper cover.
2) Remove five security screws (M5x20) and four security screws (M5x12)
and remove the right side cover.
3) Press the centre of the belt with a push type scale, or pull the centre of
the belt with a spring type scale. The drive belt should have 4 to 5mm
slack when a force of 500g is applied. If there is more or less slack, the
belt needs adjustment.
6-2-1 Adjusting the Drive Belt
1) Remove the top and right side covers as above.
2) Remove four security screws (M5x12) and remove the left side cover.
3) Slacken the two hexagonal flange nuts (3/8”), one either side,
retaining the Flywheel.