Honda XL250R / XL250S Valve Adjustment Tool. This valve adjustment tool holds or turns tappet adjusters during valve-clearance service. Correct square size, socket size and handle clearance make it easier to set clearance without rounding the adjuster. Always verify clearance after tightening the locknut because the setting can shift slightly. During top-end service, check seat contact, stem-to-guide clearance and keeper-groove condition before final assembly. Fitment / Compatibility Honda XL250R (1982-1987) Honda XL250S (1978-1981) Product Details Aftermarket service tool Valve/tappet adjustment tool; match square size, socket size, handle style and access clearance Sold individually Before OrderingConfirm square size, socket size, handle style and access clearance before ordering