Keeping the valve clearances within specified tolerances will help achieve full performance and economy, as well as eliminating irritating 'tappet clatter'. When pacing your order, check out the full list of service items and spare parts we supply for your Honda by browsing the online catalogue, or, where possible, looking at the on line 'Parts list' fiche. It often pays to order as many items as possible in one 'hit' to save on shipping costs.