Simplicity 990350 Landlord Operator's Manual
![Simplicity 990350 Landlord Tractor manual cover](/images/BMIQFjdnaOpGrOtOFXbqGetJ/thumbs/thumb175x175.webp)
To change the oil, first run the engine for a few minutes to warm it up. Turn off the tractor and locate the oil drain plug underneath. Place an oil pan beneath the plug, remove it, and let the oil drain completely. Replace the drain plug, and refill the engine with the recommended oil type and amount. Check the oil level using the dipstick.
Common causes include a dead battery, faulty ignition switch, or clogged fuel filter. Check the battery charge, ensure the ignition switch is functioning, and inspect the fuel filter for blockages. Replace or repair any faulty components.
To adjust the cutting deck, park the tractor on a level surface. Turn off the engine and disconnect the spark plug. Adjust the deck height using the height adjustment lever, ensuring both sides are level. Consult the manual for specific height settings.
Regular maintenance includes checking and changing the oil, replacing air and fuel filters, inspecting the spark plug, and sharpening or replacing mower blades. Also, check tire pressure and clean the cutting deck to prevent grass buildup.
Overheating can be caused by low coolant levels, a blocked cooling system, or a faulty thermostat. Check the coolant level and refill if necessary. Inspect the cooling fins and radiator for debris and clean them. Replace the thermostat if needed.
To replace the drive belt, first remove the cutting deck. Locate the belt routing diagram and follow it to remove the old belt. Install the new belt according to the diagram, ensuring it is seated properly on all pulleys. Reattach the cutting deck.
Use regular unleaded gasoline with an octane rating of at least 87. Avoid using ethanol blends higher than 10% as they can cause engine damage. Always store fuel in a clean, dry container.
To improve traction, consider installing tire chains or using weights on the rear wheels. Reducing tire pressure slightly can also increase traction. Ensure the tires are not excessively worn and replace them if necessary.
Excessive vibration can be caused by unbalanced blades, loose parts, or damaged components. Check the blades for balance and sharpen or replace them if necessary. Tighten any loose bolts or screws and inspect for damaged parts.
To clean the air filter, first remove the air filter cover. Take out the filter and gently tap it to remove loose dirt and debris. If it's a foam filter, wash it with mild soap and water, then let it dry completely before reinstalling. Replace the filter if it is too dirty or damaged.