p8ntballer72
03-18-2006, 08:30 PM
I got my YFZ about 5 months ago.. and i hear a slight knocking, possibly the valves not quite sure. Alot of people tell me this is normal for the first few hours of running the bike. Also alot of people have been telling me about a 20 hour tune which would possibly get rid of the knocking. My question- is a 20 hour tuneup nessesary, reccomended ?? Im way over 20 hours now but should i still get it done.. ?