If you notice play in the headset of D50/ST50, follow the instructions below. Solution 1: Loosen the stem bolts slightly, then tighten the top cap bolt until there is no play, but ensure that the handlebars can still turn smoothly without binding. If ...
Check entire packaging before assembly. List missing parts and notify ENVO support with serial/order number; replacements sent under warranty. Do not ride until all fasteners secured.
Inspect tube for puncture before riding. Use tire levers to check for sharp rim tape or embedded debris. Replace tube if punctured. Normal flats not covered by warranty unless assembly defect.