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Timing trouble ?

2063 Views 6 Replies 5 Participants Last post by  D.T.
"Everybody has a plan, until they get hit in the face" - Mike Tyson

Well, I'm pretty good at beating myself up.
The plan was to work on my 2015 650 in the house this winter while I healed up from rt. hip and lt. knee replacements.
I've never done a valve lash check with a shim under bucket engine before. So, I did what any backyard mechanic would do. I watched a bunch of you tubers and jumped right in.
So we get what we have here.
If any one could draw a diagram of what position the rear two camshafts should be in when the front cylinder is in TDC on the compression stroke, that would be great.
Now an ignorant question....
How do you know if the cylinder is in compression stroke?
I have Haynes manual now. I didn't when I started

Poor thing...
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I have everything just like this picture. I just don't know how the rear cylinder lobes are supposed be.
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All the valves will be closed at TDC on the compression stroke and you should find a gap between the 4 cam lobes and the buckets on the front cylinder.

A 650 guy will be along in a bit. I owned a 1000.
Here is a drawing of the positions of the rear cam lobes and sprockets with front cylinder at TDC.

You can download your very own Suzuki DL650 manual at Free. This is page 3-105.

ps. you will note that the numbers and letters on the front cam sprockets appear backwards. This is how they would appear if you had X-ray vision and could actually read them from the right side of the bike. Since in fact they are only visible from the left side of the bike, these letters and numbers would read correctly.

pps. You might also enjoy these references:

I kept track of compression stoke by only taking out one set of cam shafts at a time, thus having the accurate relationship maintained by the marks on the other cylinder's cams. If you pulled out both sets of cam'll have to ask a smarter monkey than me. :)


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There was a similar discussion last week about this very topic. Pictures too. Thread title "assessing the damage". Several pages of help with pictures. In general terms, when piston is at top and BOTH lobes ( I & E) are off the buckets, is TDC. IF the lobe of either cam is pressing on a bucket , crank is out of position.

There are several thread posts as I mention with proper diagrams, to help you.

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Wow, again??? :cautious:

Just check Tmans thread and make sure the lobes are in the correct position. An the ]F ]R timing marks are in the right spot.

I just put the picture a few days ago. I just did mine for something to do on the rear cylinder. All good.
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I appreciate the replies and the pictures.

My main problem is I had a brain fart. I turned the engine with the forward exhaust cam out.
The intake cam jumped a couple of teeth (at least). I'm sure I can figure it out with the info I've been given.
Thanks every body!
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Yeah, just use the 13 pin diagram and all the numbers to figure out cam timing. AT TDC for the front cylinder. The picture you put up there! ^
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