NAMCO Prop cycle, Operator'S Manual

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Page 26
4) To increase the tension, slacken the front nylon nuts (M6) and tighten
the rear nylon nuts (M6). To decrease the tension, slacken the rear
nuts and tighten the front nuts.
Note: To ensure that the flywheel remains parallel within the frame,
adjust each nut on both sides by the same amount.
5) After adjustment, turn the pedals three or four times to ensure that
the drive belt remains central across all pulleys. If the belt drifts off to
one side, the flywheel is not parallel and will need adjustment to one
side.
6) When adjustment is complete, tighten fully all nylon nuts and the two
hexagonal nuts.
7) Refit the side and top covers.
7-3 Removing the Flywheel or Drive Belt
1) Remove the top and side covers, (see section 7-2)
2) Remove the security screw (M5x12) and remove the pedal cover on the
right hand side.
3) Remove the three pozi head screws (M5x12) which fasten the right hand
pulley cover. It is not necessary to remove the cover completely.