Trying to rest the Yale y150/40 lock with four combination numbers but cannot

http://www.yale.com/uploadedFiles/Yale/Content/NorthAmerica/Product_Information/Product_Brochures/Class5_GP060-070VX-Veracitor-Specification-Sheet(3).pdf
http://store.intellaliftparts.com/blog/decode-yale-forklift-model-number
https://www.scribd.com/doc/244438912/manual-yale-pdf

Go to cannonsafe.com and find their help line unless they have online instructions available. Be ready with any serial numbers etc receipt of purchase, where you bought it. They may not readily hand over the info.

Sorry, I don't know anything about them.

this step by step guide should help you reset the lock, if its not the exact same lock, its the closest thing that Yale currently makes. Be aware you cannot reset locks like these unless they are open already, atleast not to my knowledge

Combination Cable lock Reset the combination of Yale travel lock Secure...

Lost Combinations or to rest the lock:
Go to this page..... Lost combinations FAQS by master lock http://www.masterlock.com/service-and-support/faqs/lost-combinations
24 7 Locksmith Orchard Park NY 716 710 7400 Locksmith Orchard Park NY

Look sorry to say but you have created a mess. Now what you have to do is to visit the San Francisco Locksmith website and see the manual guide to fix it. The better option is to hire their services or contact with them to know about fixing this issue.

All I ever do is start at 001and work my way to 999

The only way to open your lock is by using the correct combination. There is no other way.

You can either try every possible combination or you will need to contact the manufacturer. But they cannot assist you if the lock does not have a serial number (they recently stopped applying serial numbers for greater security) and they will not assist if the lock is already secured to anything. There are a number of other hurdles as well, click here for details. Given that they state that you will have to wait four to six weeks for an answer, it's going to be far quicker to just try every possible combination.