Simplicity 1691958 GTH-L Parts Manual
![Simplicity 1691958 GTH-L Tractor manual cover](/images/qcfrAzdlIYGnoJawFKquESws/thumbs/thumb175x175.webp)
Regular maintenance includes checking and changing the oil, inspecting the air filter, sharpening the blades, and checking tire pressure. Refer to the owner's manual for a detailed maintenance schedule.
It is recommended to use SAE 30 oil for temperatures above 32°F and SAE 5W-30 for temperatures below 32°F. Always check the owner's manual for specific oil recommendations.
If the tractor won't start, check the battery connections, ensure the fuel tank is not empty, inspect the spark plug, and verify that the PTO switch is in the off position.
To change the mower blades, ensure the tractor is on a level surface, disconnect the spark plug wire, lift the mower deck, remove the blade bolts, and replace the blades. Make sure to tighten the bolts securely.
The air filter should be checked every 25 hours of operation and replaced if necessary. Typically, replacement is needed every 100 hours or once a season.
Uneven cutting can be caused by dull blades, an unlevel mower deck, or improper tire pressure. Check and correct these issues to ensure an even cut.
If the engine overheats, stop the tractor immediately, allow it to cool down, check the coolant level, and ensure the radiator is not clogged with debris.
Adjust the cutting height by using the lever located on the right side of the tractor. Refer to the owner's manual for the specific height settings suitable for different types of grass.
The recommended tire pressure is usually around 10 PSI for the rear tires and 14 PSI for the front tires. Always check the sidewall of the tire or the owner's manual for exact specifications.
To improve fuel efficiency, ensure regular maintenance, keep the mower blades sharp, avoid overloading the tractor, and operate at the recommended engine speed.