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Discussion Starter #1
I just completed a valve check on my 2012 DL650 with 16,700 miles on the clock. I bought it 8 months ago at 13,800 and presume the valves have not been previously adjusted. Both exhaust valves on the rear head were at the tight end of spec. All other valves were well within spec. I did not adjust anything, just put it back together. When would you suggest I check again?
Thanks.
 

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If the specified valve check clearance is 16K, just wait til 32K. "At the tight end" isnt a red flag, it's still within spec.
Those valves may get tighter, looser, or not change at all. A change of .05mm or .10mm shim may put you in the center of spec, but as it now stands, youre within.
But I congratulate you for having checked! GOOD JOB, I salute you!
 

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If you had set the tighter ones to the middle of spec(I did mine at 22K) then I would not check them again until 60K. Since they are at the last limit to the tight end of spec I would to them again around 30K.

I always figure it's easier when you are there, so have a shim set(or source) available when you open it up. There is a chart in the shop manual that tells you what shim size is needed based on the present feeler measurement.
 

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My 2006 DL650 required adjustment at 26,000mi. I had checked them once before and they did not need adjustment.

I have seen more than one 2005-2006 DL650 owner find an adjustment is necessary at this same time, but owners of different years have different results. For me personally, the 26,000mi check is one I would not skip, and be ready to make an adjustment, if necessary.

https://www.stromtrooper.com/inform...stment-poll-those-who-have-done-had-done.html
 

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I wouldnt skip any specified mileage interval concerning a valve clearance check. You can't know when a clearance will change, if it changes, or how fast the change occurred.
If you already buttoned it up and it was within spec, dont sweat it until the next time a check is called for. Then you'll know.
Concerning the adjust method itself, I try to simplify things:
1) Make or download a chart showing valve locations. For example, Cyl Head 1--Intake A/B, Exhaust A/B. Cyl Head 2--Intake A/B, Exhaust A/B (4-valve heads, valves left-to-right from rider's seated position)

2) Measure the valves. If within spec, cross them off the chart. If theyre off, note the clearance, compare to spec, and do the math to figure out if you need a thicker or thinner shim to arrive within spec. For example, +.10mm or -.15mm from what the current shim.
3) Take out the shim, measure it, add or subtract the difference needed to get your shim size, and reassemble.
The shims that dont need to be changed I measure anyway, and keep a chart of all the shims that are in my engine when done. The next time I need to adjust I'll already know what's there, and it's just a matter of doing the math.
It's not rocket science.
 

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Discussion Starter #6
Thanks for all the feedback! Things worked out pretty much as I hoped. I was able to do the check without having to make any adjustments. It took enough time and focus to open things up and put it back together again. I now feel more confident about that process so next time I can focus on doing actual adjustments if needed.
 

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Just out of interest, how are the shims changed on these bikes? I’m used to my Kawasaki which utilises a rocker arm that can be slid aside to access the shim. I once owned a Triumph triple on which I had to pull the cams to change shims! Is the Suzuki user friendly in this regard?
 

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Just out of interest, how are the shims changed on these bikes? I’m used to my Kawasaki which utilises a rocker arm that can be slid aside to access the shim. I once owned a Triumph triple on which I had to pull the cams to change shims! Is the Suzuki user friendly in this regard?
You have to remove the cam, then pull the bucket out(a magnet makes this easy). Sometimes the bucket shim will come out stuck to the bucket, other time it stays in it's pocket. Shims are numbered with their thickness, so you change to another size to get the desired clearance. Replace the bucket and the cam...done.
 

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Original Post at 9:55am, done with the valve check in time to post again at 12:04pm. Amazing !!

Some of these guys make like an adjustment is just 'take the old shim out, put a new one in.....done !!!'

Right.
 
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