YS Engine YSF2013 - Intake Tappet Adjuster for YS Engine models  [YSF2013]

Intake tappet adjustment screw, YS Engine fit

This YS Engine YSF2013 intake tappet adjusting screw is an RC replacement part intended to restore or precisely adjust intake tappet clearance on YS Engine units. It performs a mechanical role within the valve train, letting you make small, repeatable alterations to tappet position to aid consistent engine running.

For installation, follow the engine's service manual: remove the valve cover, back out the old adjuster, install the YSF2013 screw, then set clearance by feel or with a standard feeler gauge where required. Observe the engine manufacturer's torque figures and reassembly order when completing the job.

In a tuning or race-prep scenario the part supports repeatable clearance checks and minor consistency improvements to timing. Inspect threads and seating during fitment and run the engine on the bench to confirm a stable idle and predictable throttle reaction before track use.