Derbi Rambla 250 Manual page 92

Engine
movable driving half-pulley bushing: Max. di-
ameter admitted
Ø 26.12 mm
sliding bushing: Standard Diameter
Ø 25.959 ÷ 25.98 mm
sliding bushing: Minimum diameter admitted
Ø 25.95 mm
roller: Standard Diameter
Ø 20.5 ÷ 20.7 mm
roller: Minimum diameter admitted
Ø 20 mm
Refitting the driving pulley
- Preassemble the movable half-pulley with the
roller contrast plate by placing the rollers in their
housings with the larger support surface touching
the pulley according to the direction of rotation.
- Check that the roller contact plate does not show
flaws or is damaged on the grooved edge.
- Fit the entire bushing assembly on the crank-
shaft.
- Fit the driven pulley/Clutch/belt assembly to the
engine.
ENG - 92