How many of you have actually done this break in method. I did normal riding for about 1/4 tank then gave it hell. At about 3/4 i changed the oil and filter. crankcase i am running amsoil syn, and the tranny the honda red label.
if the motor goes i have a buddy that is machinist that can bore and hone my cylinder. we will see
I've always heard, break it in like your going to ride it. I bought two 400ex's. One I broke in like I stole it, the other my girlfriend broke in(nice and easy). Her bike is faster than mine! (This is only my opinion) So, I believe, braking a engine is very important. When I first got my 450R, I started it up rode easy for 15 min, turned it off. Waited until it was ice cooled. Did this twice and then did same thing for 30min. four different times. Then I changed the oil and then full throttle. After that, every two rides in the woods I changed the oil. OH Yeh, I'm using Valvoline for atv's 10-40. I heard a rumor that the Honda oil gums up after a long period of time!!
I always heard not to be extremly rough on it. To break it in i have always heard use non-synthetic oil, Let the motor warm up When you ride it keep it in the mid range while occasioally "punching" the throttle to give it a variety of it's RPM range (but not hold it at high revs) just kinda play with it. After about 15-25 miles change oil, and repeat, after doing the about twice give it more high revs (ride a little harder and normal) and after the next oil change ride it like you stole it. I think as long as you change the oil at the correct times you'll be alright.. i heard varying the RPM ranges is alo very important, but not to just get on it and ream the p!ss out of it..
i agree with jonesy, that is my method too. there is no reason to take it easy on a new motor. all you are doing is breaking in the rings, nothing else. also i change my oil after about the first 2hrs.