3. INSPECTION/ADJUSTMENT PEOPLE 250 Cylinder Head Cover Upper Bolts VALVE CLEARANCE · Inspect and adjust valve clearance while the engine is cold (below 35). Remove the met-in box and center cover. Disconnect oil vapor recovery tube and secondary air cleaner fresh air outlet hose from cylinder head cover. Remove two lower bolts and two nuts on the cylinder head cover. Place the scooter on its side stand and load a Lower Bolts Nuts person on the rear carrier for remove the two upper bolts on the cylinder head cover and Index Mark remove cylinder head cover. Turn the A.C. generator flywheel to the top dead center (TDC) on the compression stroke so that the "T" mark on the flywheel aligns with the index mark on the left crankcase cover. "T" Mark Top Dead Center Mark Feeler Gauge Inspect and adjust valve clearance. Valve Clearance: IN: 0.1mm EX: 0.1mm Loosen the lock nut and adjust by turning the adjusting nut Special Valve Adjuster E036 · Check the valve clearance again after the lock nut is tightened. CARBURETOR IDLE SPEED Throttle Stop Screw · The engine must be warm for accurate idle speed inspection and adjustment. Lift up the seat and remove the inspection cover. Warm up the engine before this operation. Start the engine and connect a tachometer. Turn the throttle stop screw to obtain the specified idle speed. Idle Speed: 1700100rpm When the engine misses or run erratic, adjust the pilot screw. Pilot Screw 3-6