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Question:

How do i know if i have to adjust my valves?

I have 06 Suzuki gsx-r 750 and i was wondering what are the signs or how do i know that my valves need to be adjusted?

Answer:

Unless you have owned the bike since it was new,you won't know what kind of pull the bike had when it was fresh. You should at least go by the service manuals recommended times.Right around 14,000 for the first and around 24 for the second .Also you will hear a littlte clatter coming from the top of the motor if they are way out of adjustment.Tough to tell with these bikes as they have tremendous pull in 3'rd and 4'th gear.But if you are hearing noises then more then likely they need to be looked at.
Buster Brown is right on the money. Most bikes have double overhead cams these days and the valve clearance tightens up and can cause burned valve faces or seats. Single overhead cam engines using rocker arms tend to loosen up and will clatter more. He's especially on the money about keeping track of valve clearances at each check. I've done that for years as well as keeping record of compression readings.
Actually, your valves will not clatter, they will get very quiet. Valve clearances ordinarily tend to tighten up over time. A tappy valve is a happy valve. Measure the clearances with a feeler gauge to tell if they need adjustment. Some early warning signs of tight valve clearances include an unstable idle, stalling on the overrun, and stumbling off idle. You should also keep a record of your clearances before adjustment, shim sizes as found, clearance after adjustment, shim sizes after adjustment, and mileage. That information will help you anticipate adjustments, give you an idea of what shim sizes to have on hand, and give you an indication of any unusual wear patterns. Keep this information in mind when chasing carb and ignition problems, too. Driveability issues attributed to carburetion are often caused by tight valve clearances instead. If it has been a while since your last valve adjustment, set them first, before chasing carb issues.
The only way is to pull the cam covers and check them with a feeler gauge.This should be done at least once a year as part of your regular maintenance.
what Bob said but by someone qualified i have busted cams because i thought i could do it just some advise

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