3. INSPECTION/ADJUSTMENT People GT 125i Cylinder Head Cover VALVE CLEARANCE · Inspect and adjust valve clearance while the engine is cold (below 35). Remove the seat assy and luggage box. Remove the four bolts and then cylinder head cover. Top Dead Center Mark Turn the A.C. generator flywheel to the top dead center (TDC) on the compression stroke Bolts so that the "T" mark on the flywheel aligns Timing hole cap with the index mark on the left crankcase cover. Inspect and adjust valve clearance. Valve Clearance: IN: 0.10 mm EX: 0.10 mm Loosen the lock nut and adjust by turning the adjusting nut Special Valve Adjuster E012 Feeler Gauge · Check the valve clearance again after the lock nut is tightened. Crankshaft hole cap CYLINDER COMPRESSION Warm up the engine before compression test. Remove the center cover and luggage box. Remove the spark plug. Insert a compression gauge. Open the throttle fully and push the starter button to test the compression. Max. Compression: 15 kg/cm2 - 570 rpm If the compression is low, check for the following: Leaky valves Valve clearance too small Leaking cylinder head gasket Worn piston rings Worn piston/cylinder If the compression is high, it indicates that Punch Mark carbon deposits have accumulated on the combustion chamber and the piston head. 3-7