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Timing off?

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Last night I was leaving the store and it felt like my brake was stuck on. I pulled over and checked everything but found nothing stuck. I was two blocks from home so I headed home. As I shifted, I noticed that it coasted just fine with the clutch in, so I knew it was not not the brakes. It's like half of the engine is engine breaking and the other half is under power. Running on one cylinder? I poked around on here and some other sites and from what I 've gathered it could be a slipped timing belt, bent valves or both. So I pulled it apart today and found what I think is TDC compression, but my cam pulleys don't line up with the timing marks on the vertical cylinder (Picture). They line up perfectly on the horizontal cylinder. Can anybody help me?

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Discussion Starter · #3 ·
That's what I was thinking. I don't know much about it though. So should I just take the belt off and line up the marks? If so, do I have to worry about which way to turn it? Any help would be appreciated. Thanks.
 

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check the crank end pulley woodruff key. The cam pulley cannot shift unless the crank pulley does too [it would have to jump teeth on the belt]

double check that all your timing marks are aligned [crank and cam]

I've never known of a woodruff key failing, but I'm still learning....
 

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Discussion Starter · #5 ·
Well, my belts are pretty loose. I think I'm supposed to have around 5.5 mm between the belts at their closest point. I have more like 8 or 9 mm. The H cylinder seems to be in perfect time so I don't think the crank slipped too. What is the mark on the crank pully supposed to line up with? I have a little pink mark on the pully but I don't see anything to line it up with. Does this mark even matter? Which woodruff key do you mean? I'm sorry I'm not too familiar with this part of my bike. Thanks for all help so far.
 

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blade625CT said:
check the crank end pulley woodruff key. The cam pulley cannot shift unless the crank pulley does too [it would have to jump teeth on the belt]

double check that all your timing marks are aligned [crank and cam]

I've never known of a woodruff key failing, but I'm still learning....
The cam pulleys do have some adjstment on the newer bikes. You loosen the 3 allens and rotate the outer ring against the hub.

In the second pulley you show the timing mark for the lower pulley is a small notch in the case. Look closely you can see it in the pic.

When I get home Ill take a few pics of the orientation of the 620 engine I have on the bench. You can compare then.
 

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Discussion Starter · #8 ·
All of my timing marks (line through site glass and all three pulleys) line up perfectly when the horizontal cylinder is at TDC compression. But nothing (except the line through the sight glass) lines up when the vertical cylinder is at TDC compression. Is this normal? Thanks
 
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