Troy-Bilt 21C-655A766 User Manual (English)

Questions and Answers:

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Rachel WheelerAug 10, 2025
Why Troy-Bilt 21C-655A766 Tiller engine does not start?
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  Crystal ChangAug 10, 2025
  If your Troy-Bilt Tiller engine doesn't start, there are several potential causes: * The spark plug wire may be disconnected; reconnect it. * The engine throttle control lever might be incorrectly set; put the lever in the START position. * The fuel tank could be empty; add fuel. * The gasoline may be stale; drain the old fuel and add fresh fuel. * The air filter might be dirty. For solutions for this cause, please consult the Engine Manual. * The spark plug may be defective or incorrectly gapped. For solutions for this cause, please consult the Engine Manual. For the following causes, please consult an Engine Service Dealer: carburetor out of adjustment, misadjusted throttle control, or dirt/water in the fuel tank.
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Julie GibsonAug 16, 2025
Why is my Troy-Bilt Tiller engine running poorly?
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  cberryAug 16, 2025
  If your Troy-Bilt Tiller engine is running poorly, it could be due to several reasons: * Stale gasoline: Replace it with fresh gasoline. * A defective or incorrectly gapped spark plug. For solutions for this cause, please consult the Engine Manual. * Dirty air filter(s). For solutions for this cause, please consult the Engine Manual. * Engine cooling system clogged. For solutions for this cause, please consult the Engine Manual. For the following causes, please consult an Engine Service Dealer: carburetor out of adjustment, or dirt/water in fuel tank.
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Michael MaysAug 20, 2025
What to do if wheels/tines will not turn on Troy-Bilt 21C-655A766 Tiller?
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  randy91Aug 20, 2025
  If the wheels or tines on your Troy-Bilt Tiller won't turn, consider the following: * You might be using the controls improperly. Review the Operation section. * The drive belts may be worn, broken, or misadjusted. Replace or adjust the belts. * A bolt may be loose in the transmission pulley. Tighten the bolt. * Internal transmission wear or damage may have occurred. Contact a local dealer or the factory.
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James BrownAug 26, 2025
Why is my Troy-Bilt Tiller engine overheating?
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  Erin JonesAug 26, 2025
  If your Troy-Bilt Tiller engine overheats, the following could be the cause: * Low oil level. For solutions for this cause, please consult the Engine Manual. * Engine cooling system clogged. For solutions for this cause, please consult the Engine Manual. For the following causes, please consult an Engine Service Dealer: carburetor out of adjustment.
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Calvin CoxAug 30, 2025
What to do if tines turn, but wheels don’t on Troy-Bilt 21C-655A766?
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  Sheryl MartinezAug 30, 2025
  If the tines on your Troy-Bilt Tiller turn, but the wheels don’t, check these: * The wheel drive pins may not be properly inserted. Insert the drive pins properly. * A bolt may be loose in the transmission pulley. Tighten the bolt. * Internal transmission wear or damage may have occurred. Contact a local dealer or the factory.
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Heather LeeSep 4, 2025
What to do if wheels turn, but tines don’t on Troy-Bilt 21C-655A766 Tiller?
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  Michelle ThomasSep 4, 2025
  If the wheels on your Troy-Bilt Tiller turn, but the tines don’t, examine these: * The tine holder mounting hardware may be missing. Replace the hardware. * A bolt may be loose in the transmission pulley. Tighten the bolt. * Internal transmission wear or damage may have occurred. Contact a local dealer or the factory.