Simplicity 990168 Wonderboy 700 Parts Manual
![Simplicity 990168 Wonderboy 700 Tractor manual cover](/images/TMlVJJgfUmTivbGDMQgswuFx/thumbs/thumb175x175.webp)
To change the oil, first ensure the tractor is on a level surface and the engine is off. Remove the oil drain plug and drain the old oil into a container. Replace the drain plug, and refill the engine with the recommended oil type and quantity as specified in the manual.
If the tractor won't start, check the battery connections for corrosion or looseness, ensure there is fuel in the tank, and verify that the spark plug is clean and functional. If the issue persists, consult the manual for specific troubleshooting steps or contact a professional technician.
Regular maintenance should be performed every 50 hours of use or at least once annually. This includes checking and replacing the oil, inspecting belts and blades, and cleaning the air filter. Refer to the maintenance schedule in the manual for detailed guidance.
Use regular unleaded gasoline with an octane rating of 87 or higher. Avoid using ethanol-blended fuels greater than 10% as it may damage the engine.
To replace the mower blades, safely lift the tractor and secure it. Remove the blade bolts using a wrench, then detach the old blades. Attach the new blades, ensuring they are properly aligned, and tighten the bolts securely. Always wear protective gloves when handling mower blades.
Excessive vibration may be due to unbalanced blades, worn belts, or loose components. Inspect the mower deck and blades for damage, ensure all fasteners are tight, and replace any worn parts. If vibrations continue, have the tractor inspected by a professional.
Uneven cutting may be caused by a misaligned mower deck, dull blades, or tire pressure inconsistencies. Check and adjust the mower deck level, sharpen or replace the blades, and ensure all tires are evenly inflated.
To winterize, clean the tractor thoroughly and remove any grass clippings. Stabilize the fuel or drain it completely, change the oil, and disconnect the battery. Store the tractor in a dry, sheltered area and cover it to protect against dust and moisture.
To adjust the cutting height, locate the height adjustment lever on the mower deck. Move the lever to the desired height setting, ensuring that both sides of the deck are at the same level for an even cut.
If the transmission is slipping, first check the transmission fluid level and top it up if necessary. Inspect the drive belt for wear and tension, and replace if needed. Persistent issues may require professional servicing.