Il. CHECKING THE CLUTCH CLEARANCE. 3. Check that the release spring on the fork is in good order and is firmly fixed. Reduce the pressure in the cylinder by means of the auxiliary clutch control lever below the dashboard. Check that the fork is free. If it is not free, recommence the clutch clear- adjustment, which has probably been overdone. II. ADJUSTING THE IDLING SPEED. NOTE : This adjustment must be carried out when the engine is hot.