Ryobi RY4CCS User Manual - Page 19

TROUBLESHOOTING PROBLEM Engine will not start POSSIBLE CAUSE No spark. No fuel. Engine is flooded. SOLUTION Clean or replace spark plug. Reset spark plug gap. Refer to Spark Plug Replacement earlier in this manual. Push primer bulb until bulb is full of fuel. If bulb does not fill, primary fuel delivery system is blocked. Contact a qualified service center. If primer bulb fills, engine may be flooded, proceed to next item. Set the choke lever to the RUN position. Squeeze the trigger and pull the rope repeatedly until the engine starts and runs. NOTE: Depending on the severity of the flooding, this may require numerous pulls of the starter grip and rope. Engine does not reach full Air filter is dirty. speed and emits excessive smoke Spark arrestor screen is dirty. Spark plug fouled. Clean air filter. Refer to Cleaning the Air Filter earlier in this manual. Contact a qualified service center. Clean or replace spark plug. Reset spark plug gap. Refer to Spark Plug Replacement earlier in this manual. E n g i n e s t a r t s , r u n s , a n d Idle speed screw on carburetor Turn idle speed screw clockwise to increase idle accelerates but will not idle needs adjustment. speed. See Figure 18. Engine emits too much smoke Too much lubricant in crankcase. Drain lubricant and refill with correct amount of 20W50 engine lubricant. See Adding/Checking Engine Lubricant in the Operation section of this manual. Engine rope cannot be pulled Lubricant has entered the combustion chamber. This is usually caused by storing the unit for an extended time with the engine in an upside-down position. Remove and clean the spark plug. Drain the lubricant out of the spark plug hole, then reinstall the spark plug. Check engine lubricant and add if necessary prior to starting. Refer to Adding/Checking Engine Lubricant earlier in this manual. Line will not advance Line is welded to itself. Replace line. Refer to the applicable line replacement section in this manual. Not enough line on spool. Install more line. Refer to the applicable line replacement section in this manual. Line is worn too short. Pull lines while alternately pressing down on and releasing the bump knob. Line is tangled on spool. Remove line from spool and rewind. Refer to the applicable line replacement section in this manual. Engine speed is too slow. Advance line at full throttle. 15 - English