To Next PageTo Next PageWhy my Toro 51903; 51904; 51906; 51907 Trimmer engine will not start?
If your Toro Trimmer engine won't start, it might be due to an empty fuel tank. In this case, you should fill the fuel tank. Another reason could be that the primer bulb wasn’t pushed enough; try pressing it fully and slowly 5-7 times. Finally, the engine may be flooded, so use the starting procedure without using the choke.
What to do if my Toro 51903; 51904; 51906; 51907 engine lacks power?
If your Toro Trimmer engine lacks power or stalls when cutting, check the throttle wire and tighten it if it has come loose. Also, a dirty air filter could be the cause, so clean or replace it. Additionally, ensure there is oil in the fuel; if not, add oil to the fuel.
Why Toro 51903; 51904; 51906; 51907 Trimmer cutting head will not advance line?
If the cutting head on your Toro Trimmer will not advance the line, several issues could be the cause. First, the cutting head might be out of line, so refill it with a new cutting line. Second, the inner reel could be bound up, requiring you to replace it. Third, the cutting head might be dirty, so clean the reel and spool. Fourth, the indexing teeth could be worn or burred, necessitating replacement of the reel and spool. Fifth, the line could be welded, in which case you should disassemble, remove the welded section, and rewind the line. Sixth, the line might be twisted when refilled, so disassemble and rewind the reel. Finally, not enough line might be exposed, so push the Bump Knob and pull out 102 mm (4 in) of line until the line is outside of the cutting head.
What to do if Toro 51903; 51904; 51906; 51907 Trimmer engine will not idle?
If the engine on your Toro Trimmer will not idle, it could be that the cutting head is bound with grass. To resolve this, stop the engine and clean the cutting head.
Information on the correct oil and fuel mixture for the engine.
Detailed steps for starting and stopping the trimmer engine.
Schedule of required maintenance tasks and their frequency.
Procedures for installing and rewinding trimmer line.
Instructions for adjusting the engine's carburetor for optimal performance.
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