Ryobi RY40402A Operation Manual - Page 17
Ryobi RY40402A Manual
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TROUBLESHOOTING IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM, CONTACT YOUR AUTHORIZED SERVICING DEALER. PROBLEM Engine fails to start. No fuel in tank. Spark plug shorted or fouled. Spark plug is broken. (cracked porcelain or electrodes broken) Ignition lead wire shorted, broken, or disconnected from spark plug. Ignition inoperative. Engine hard to start. Water in gasoline or stale fuel. Engine is under or over choked. Weak spark at spark plug. Engine lacks power. Air filter clogged. CAUSE Fill tank. Replace spark plug. Replace spark plug. Replace lead wire or attach to spark plug. Contact authorized service center. Drain entire system and refill with fresh fuel. Adjust choke as necessary. Contact authorized service center. Clean air filter. Refer to Cleaning the Air Filter Screen earlier in this manual. REMEDY Engine starts, runs, and accelerates Idle speed screw on carburetor needs Turn idle speed screw clockwise to inbut will not idle adjustment. crease idle speed. See Figure 16. Engine emits too much smoke Too much oil in crankcase. Drain lubricant and refill with correct amount of 10W-30 engine lubricant. See Adding/Checking Engine Lubricant in the Operation section of this manual. Engine rope cannot be pulled Oil has entered the combustion This is usually caused by storing the unit chamber. for an extended time with the engine in an upside-down position. Remove and clean the spark plug. Drain the oil out of the spark plug hole, then reinstall the spark plug. 13 - English