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How to Adjust Valve Clearance in a 260cc Engine

Model: (Various brands) Various
Part: Valve

Video tutorial

This video tutorial explains how to adjust the valve clearance in a 260cc engine. The necessary tools you will need for this operation are: an 8mm spanner, pliers, and feeler gauges of 0.10, 0.15, and 0.20. First, remove the pins and take off the cylinder head cover, locating the two exhaust valves and two intake valves connected by their respective rockers and bearings.

Above the valves, you will find the adjustment screws; before proceeding, you must set the engine to the firing position, which is when all the valves are closed. It is important to work with a cold engine.

After setting the engine to the correct phase and removing the caps and water pump, take the feeler gauge and insert it between the valves and the rocker, setting the intake valves to 0.10 'soft', meaning that 0.15 should fit with difficulty, and then similarly set the exhaust valves to 0.15 soft, meaning that 0.20 should fit with difficulty.


Updated on 24 May 2026 by ScegliAuto


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