Regularly clean or replace the spark arrestor to prevent this issue. Clogged Spark Arrestor: Exhaust Flow RestrictionĪ clogged spark arrestor can restrict exhaust flow, causing the engine to overheat and stall. Why does my Chainsaw Die When It Hot?Īpart from vapor lock, there are a few other reasons why your chainsaw may die when hot. Adequate ventilation helps dissipate heat and minimizes the chances of vapor lock. Keep the Vents Clean: Proper AirflowĬheck and clean the air vents regularly to ensure proper airflow and prevent debris from clogging the ventilation system. Avoid exposing it to direct sunlight or extreme temperatures, as excessive heat can increase the likelihood of vapor lock. When not in use, store your chainsaw in a cool, well-ventilated area. Store it in a Cool Place: Temperature Considerations Additionally, keep the fuel cap tightly secured to maintain proper pressure balance. Regularly inspect the fuel tank and lines for any signs of damage or leaks. Keep a Check on the Fuel: Quality and MaintenanceĮnsure that you use fresh, clean fuel without any impurities or water contamination. This helps to cool down the engine gradually and reduces the chances of a vapor lock occurring during the next startup. Idle Before Shutdown: Gradual Cool DownĪllow the chainsaw to idle for a minute or two before shutting it down completely. Make sure to follow the manufacturer’s recommended fuel-to-oil ratio and avoid running the chainsaw with an overly lean fuel mixture. Avoid Running Lean: Proper Fuel MixtureĪ lean fuel mixture can contribute to vapor lock. Try to vary the throttle speed and avoid prolonged operation at maximum throttle. Running the chainsaw at Wide Open Throttle (WOT) for extended periods can generate excessive heat and increase the likelihood of vapor lock. Avoid Running at WOT: Vary Throttle Speed Here are some preventive measures you can take to stop vapor lock from happening: 1. Prevention is always better than cure when it comes to chainsaw vapor locks. These additives improve fuel quality and reduce the evaporation rate, minimizing the chances of vapor lock occurring. In addition to the aforementioned methods, you can also try using a fuel stabilizer or additive designed to prevent vapor lock.
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