April 13, 200620 yr Having searched the forum, I haven't found much mention of valve adjustments. Having owned a Honda CRF 250R, thats all anyone talked about. So on your 4rt how often are you adjusting the valves, and how much out have you been? As for myself, I am due for an adjustment and would like to know what to expect. Regards, Wardo
April 13, 200620 yr Author 305 views and no responses, what gives, is this top-secret info? Maybe I was unclear, I am interested for my 4rt, or maybe it's all been hashed out before and I can't find the link, if so please assist a wayward traveler.... Wardo Edited April 13, 200620 yr by wardo
April 14, 200620 yr While I do not ride the number of events you Brits do I am in contact with a number of riders who have ridden over 100 events plus practice with the 05 4rt. Last year I rode only 10 events. Using the suggested inspection intervals neither those who have a lot of time on the engines nor myself have had to adjust the valves. This does not mean one should automatically assume that they don't have to be checked and adjusted as necessary. If you follow the maintenance schedule in the manual and check the valves at the indicated intervals you will be assured that your particular engine is always running correctly. Don't assume other's experience is a telling factor. Each engine is slightly different and regular maintenance will assure a long trouble-free life.
April 14, 200620 yr as above ,i checked my tappets 3 times with no adjustment required. but DO check them ! i think the dust and engine revs involved in motorcross is the issue there
April 17, 200620 yr First check after six meetings found one tight exhaust tappet, all have remained constant since then.(About 30 trials) They can be difficult to check if you do not have a slim set of gauges or those with an angled tip.
April 18, 200620 yr Author Thanks for the responses, the results are as I expected. I agree that the far lower revs are a significant factor in valve clearance issues, my 4rt isn't likely to hit 14,000 rpm unles I ride it off the top of Everest in first gear.... Still I'll check mine this week, for a feeler gauge I have one of the Motion Pro's made for tight spaces. Regards, Ward
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