How to treat the valve adjustment wheel of walking tractor

1. Turn off the tractor engine and wait for it to cool down. Open the engine intake valve cover located above the engine. It needs to be operated with a wrench or screwdriver. Check the valve clearance of the engine. Measure the valve clearance of exhaust and intake cylinders with vernier caliper. The correct valve clearance value can be found in the relevant technical manual or manufacturer's instruction.

2. If the valve clearance is incorrect, it can be adjusted by adjusting the adjusting bolt at the top of the valve push rod. Turning the bolt counterclockwise will increase the valve clearance, while turning it clockwise will decrease the valve clearance. After adjustment, re-measure the valve clearance to ensure that it is within the specified range. Repeat the above steps to adjust the valves of other cylinders. After the adjustment is completed, reinstall the intake valve cover and ensure that all screws are tightened.