Why is the hydraulic oil system overheating in my Toro LT3340 Lawn Mower?
- SSandra HoodSep 2, 2025
The hydraulic oil system in your Toro Lawn Mower might be overheating due to several reasons: a blocked screen, blocked oil cooler fins, a blocked engine radiator matrix, a low relief valve setting, a low oil level, engaged brakes, cutting cylinders tight on the bottom, or a defective fan or fan drive. To resolve this, try the following: Clean the screen and fins, ensure the oil reservoir is at the correct level, disengage the brakes, and adjust the cutting cylinder settings. You may need to have the relief valve pressure checked by an authorized dealer. Check the fan operation and service as required.













