Pull the plug cap, unscrew the spark plug, grounded it against the engine cylinder head, and crank the motor. Look for a bright blue spark. If the spark is yellow or nonexistent, replace the plug or check the ignition coil resistance. Poor Acceleration or Low Top Speed
Loosen the cam chain tensioner before removing the camshaft holder bolts in a crisscross pattern. Suzuki Uz125 Service Manual
Check the sticker on the floorboard or under-seat area; usually 22 psi (Front) and 29–36 psi (Rear depending on load). Standard Maintenance Schedule Pull the plug cap, unscrew the spark plug,