Simplicity 990597 Yeoman 627 Parts Manual
![Simplicity 990597 Yeoman 627 Tractor manual cover](/images/iEuaEpMWPOqgOMqmsPzdTGoQ/thumbs/thumb175x175.webp)
The recommended oil type for the Simplicity 990597 Yeoman 627 Tractor is SAE 30 for temperatures above 32°F (0°C) and SAE 5W-30 for temperatures below 32°F (0°C).
To troubleshoot a non-starting tractor, check the battery connections for corrosion, ensure the fuel tank is filled, verify the spark plug is in good condition, and inspect the ignition switch for functionality.
To change the oil, warm up the engine, turn it off, and remove the oil drain plug. Once the oil is drained, replace the plug, and add new oil through the oil fill cap. Finally, check the oil level with the dipstick.
The air filter should be inspected every 25 hours of operation and replaced if it's dirty or damaged. A regular replacement interval is every 100 hours or annually, whichever comes first.
If the blades are not cutting properly, check if they are dull or damaged. Sharpen or replace them as necessary. Also, ensure the deck is clean and the belt tension is adequate.
Maintain the battery by keeping it clean and free of corrosion, checking the electrolyte levels monthly, and ensuring it is fully charged during storage periods. Disconnect the battery if storing the tractor for extended periods.
If the tractor overheats, check the coolant level and ensure the radiator is clean and free from obstructions. Inspect the fan belt for proper tension and condition.
To adjust the steering, check the tie rods for wear and replace them if needed. Adjust the steering gear mesh by loosening the locknut and turning the adjusting screw until the desired tension is achieved.
Regular maintenance should include checking and changing the oil, inspecting the air filter, checking tire pressure, inspecting belts and blades, lubricating moving parts, and ensuring all safety features are operational.
To store the tractor, clean it thoroughly, change the oil, add a fuel stabilizer, disconnect the battery, and store it in a dry, sheltered area. Cover the tractor to protect it from dust and debris.