Ryobi RY29550 Operator's Manual - Page 18
Troubleshooting
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TROUBLESHOOTING IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM CONTACT YOUR AUTHORIZED SERVICE DEALER. PROBLEM POSSIBLE CAUSE SOLUTION Engine will not start 1. No spark. 2. No fuel. 3. Engine is flooded. 1. Clean or replace spark plug. Reset spark plug gap. Refer to Spark Plug Replacement earlier in this manual. 2. Push primer bulb until bulb is full of fuel. If bulb does not fill, primary fuel delivery system is blocked. Contact a service dealer. If primer bulb fills, engine may be flooded, proceed to next item. 3. Set the start lever to the START 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 rope. Engine does not reach full speed and emits excessive smoke 1. Incorrect lubricant/fuel mixture. 2. Air filter screen is dirty. 3. Spark arrestor screen is dirty. 4. Spark plug fouled. 1. Use fresh fuel and the correct 2-cycle lubricant mix. (50:1). 2. Clean air filter screen. Refer to Cleaning Air Filter Screen earlier in this manual. 3. Contact a servicing dealer. 4. Clean or replace spark plug. Reset spark plug gap. Refer to Spark Plug Replacement earlier in this manual. Engine starts, runs, and accelerates but will not idle String will not advance 1. Idle speed screw on carburetor needs adjustment. 1. String is welded to itself. 2. Not enough string on spool. 3. String is worn too short. 4. String is tangled on spool. 5. Engine speed is too slow. 1. Turn idle speed screw clockwise to increase idle speed. See Figure 24. 1. Lubricate string with silicone spray. 2. Install more string. Refer to the applicable string replacement section in this manual. 3. Pull strings while alternately pressing down on and releasing spool retainer. 4. Remove string from spool and rewind. Refer to the applicable string replacement section in this manual. 5. Advance string at full throttle. Spool retainer hard to turn Grass wraps around driveshaft housing and string head 1. Screw threads are dirty or damaged. 1. Cutting tall grass at ground level. 2. Operating trimmer at part throttle. 1. Clean threads and lubricate with grease - if no improvement, replace the spool retainer. 1. Cut tall grass from the top down to prevent wrapping. 2. Operate trimmer at full throttle. 14 - English