Simplicity 1691799 LTH Parts Manual
![Simplicity 1691799 LTH Tractor manual cover](/images/DmukcRimmLDyGakAiFvCLsVB/thumbs/thumb175x175.webp)
To change the oil, first warm up the engine. Turn off the tractor and disconnect the spark plug wire. Place an oil pan under the engine, remove the drain plug, and let the oil drain completely. Replace the drain plug, and refill with new oil as per the manufacturer’s specifications.
Check the battery connections for corrosion and ensure they are tight. Verify that the fuel is fresh and the fuel filter is clean. Inspect the spark plug for wear and replace if necessary. If the problem persists, consult a professional technician.
Sharpen the mower blades at least once a season, or more frequently if you notice uneven cutting or if the blades hit debris. Always ensure the tractor is off and the blades are cool before attempting to sharpen them.
Use unleaded gasoline with an octane rating of at least 87. Avoid using gasoline with more than 10% ethanol to prevent engine damage.
Locate the cutting height adjustment lever on the tractor’s fender. Move the lever to the desired position to raise or lower the cutting deck. Always adjust the height with the engine off and the parking brake engaged.
Excessive vibration could be due to unbalanced or damaged blades, debris trapped in the mower deck, or worn belts. Inspect these components and replace or clean as necessary.
The recommended tire pressure is usually indicated on the sidewall of the tires or in the owner's manual. Generally, it should be around 10-14 psi for rear tires and 12-15 psi for front tires. Always check the manual for precise specifications.
To improve traction, ensure the tires are properly inflated and consider adding wheel weights or tire chains. Avoid mowing wet grass and make sure to mow up and down slopes instead of across them.
Before storing, clean the tractor thoroughly, change the oil and filter, and add a fuel stabilizer to the fuel tank. Remove the battery and store it in a cool, dry place. Cover the tractor to protect it from dust and moisture.
First, disconnect the spark plug wire and remove the mower deck. Release the tension on the belt by adjusting the belt tensioner, then remove the old belt. Install the new belt by following the routing diagram in the manual, reassemble the deck, and reconnect the spark plug wire.