Problem with gearbox, works up to 3

lorenzblaster93

New Member
Aug 19, 2018
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hello people, I'm talking about Argentina, I have a blaster 1993 and a few days ago I locked the gearbox, it only works 1 -neutro - 2 and 3 and every time it gets harder, the other speeds do not enter directlyI would like to know if someone can help me to guide if it fits what would be the problem
 
https://www.blasterforum.com/thread...ervice-and-owner-manuals-free-download.17325/

Might find something useful here :
https://www.blasterforum.com/threads/kor-engine-assembly-vids.51169/

Some ideas here : https://www.blasterforum.com/threads/shifting-problems-please-help.71423/#post-816678

https://www.blasterforum.com/search/11712403/?q=Transmission+problems&o=date&c[node]=13

https://www.blasterforum.com/search/11712424/?q=Won't+shift&o=date

The search function works very well on this forum. Or you can also use Google. Such as "Shifting problem + Blaster forum"
Many combination of terms for searches.

Now for questions. Have you owned it for very long? Was it sudden problem? We're YOU driving when it started happening? We're you overly hard on the shifter? Trying to,"Speed Shift," it?

Many possibilities. Bent shift ahadt , worn pawl, loose shift star, no star key (above thread). Worst case would be bent/worn fork or a problem with shift drum or a damaged gear.
The first couple are considered external shift mechanisms, the rest internal.

Hopefully there isn't a language barrier:(
 
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hello larry's
thank you very much for answering, really
Yesterday after publishing my comment asking for help I decided to disarm it completely
, this problem of locking the gearbox happened to me the other day when I decided to change the oil in the box, and not to remove the old oil and put the new one decided to clean it with another cheaper oil, then, I took out the old oil I put the oil grade 30 (common oil) I started it and try some changes and everything was perfect, once I was clean all the plug of the oil drain had two washers and take out 1 washer, then the screw was more long and when pressed it made a priority with the selector of changes and there the problem started, I took the plug and still locked, disarmed yesterday the engine and what is the gear selector was fine as the forks, the only thing that was bad were the bearings of the primary and secondary axis that were broken