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Dies when trying to shift

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554 views 26 replies 8 participants last post by  lesblank  
#1 ·
Trying to figure out why my bike keeps dying when I shift. I tried jumping my kick stand switch but it still won't shift. Anyone who had this problem and found a fix I'd really appreciate it.
 

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#2 ·
Can you describe a little better. Can you start the bike in neutral? Then you pull clutch in, you put in gear and it dies?
 
#4 ·
So, bike is running, you pull clutch in, put in gear and bike dies. Does the bike lurch forward any when it dies?
 
#6 ·
It sounds like the clutch needs adjusted, it sounds like the clutch is not dis engaging. With it not running, put it in gear, pull clutch lever in and see if you can get the bike to move back and forth.
If it moves back and forth clutch is working. If this is working it could be the diodes for the interlock system. If it won't move the clutch is not releasing.
 
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#9 ·
Can you rev the engine slightly and try putting it in gear? I might be totally wrong, but I think your idle is set low, your clutch might have a slight drag, and when you put it in gear it just stalls out. Be careful doing this as it might want to take off on you. I would have a few fingers on front brake. The reason I'm thinking this, the "safety" switches stop the bike from starting, your bike starts, so to me that takes the safety switches out of picture.
 
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#11 ·
With the bike not running, with clutch pulled in, put in gear. How far forward and backwards can you roll the bike and how difficult was it? You should be able to roll it very easily for a long distance.
 
#13 ·
Is the clutch pulled in and in gear as you are trying to push it? How long did the bike sit without being ridden?
 
#16 ·
The clutch plates can "lock" together. The plates are oil coated, the oil causes a suction between the plates after sitting. Normally rocking the bike in gear with engine off will break the bond. I've had them "stick" so bad they would not free up rocking the bike. I've had to start bike, rev it up pretty high and "dump" the clutch. If you use this method of "dumping" the clutch, be careful, when the plates "break" free, bike will take off on you.

Before you do this, in neutral, can you push bike? Trying to eliminate the mid gear or final drive isn't the cause.
 
#18 ·
That's good. Eliminates driveline issues.
 
#19 ·
On a side note, that wiring in the pic is asking for trouble in the form of blown fuses, intermittent problems, or a fire, worst case.

I've had plates lock up bad on a RD350 parts bike I had that was sitting for who knows how long - decades I would guess. My method of breaking them free would be frowned upon by OSHA, lol.

Front tire against the building, rear tire on pavement, engine at 6k RPM, and let the clutch fly. :D In my case it worked, but you have to have a plan B in case that doesn't work & the rear tire starts melting down furiously in a cloud of smoke. 😁
 
#20 ·
Another approach would be putting the bike in 5th gear and, without the engine running and the clutch not pulled in, roll the bike forward and/or backward as forcefully as you can, in an attempt to get the clutch plates to un-stick. Using 5th rather than 1st will give your rolling it more force on the clutch plates. I did this recently on a dirt bike that had been sitting for 5 years.
 
#22 ·
5th gear is a much safer way of doing it with the engine running, too. Instead of lighting up the tire it'll usually stall the engine if they're locked up that bad.

Usually if that's the case (stalls the engine), there's a mechanical problem preventing clutch disengagement ... like the missing ball bearing under the clutch lifter from the last guy who didn't know any better and didn't see it roll away.
 
#21 ·
An extreme measure is put seafoam in the oil , start the bike run for 2 minutes. Shut off the bike. Take a zip tie , put it on the clutch lever to hold it pulled in. Leave this over night. Check it next day and see if it rolls in gear. Don't start the bike. If it rolls drain the oil replace the filter. Refill with oil.
If it doesn't roll try it for one more day with the lever zip tied. If not good. You will need to take the clutch apart to clean it. If you have never done this take your time and take plenty of pictures. Clean and reassemble. Drain oil , replace filter, refill oil and go for a ride.