04-09-12, 08:03 AM
My Gen 1 is approaching 25000 miles & wondered what other "foccers" experience of this task has been. Out of curiosity I asked my local Yamaha main dealer the likely cost & was told apprx £300! :eek How easy/difficult is it to access valves-what has to be removed-indeed how important is it to do the check @ this mileage or can it be safely left to a higher mileage? According to Haynes the Americans dont do this check til 26000 miles. I am pretty confident about doing the feeler gauge bit but the shim calculation & selection process is new to me. Any thoughts gratefully considered