Is there any maintenance I can do on a Kango 950 Jack hammer

Ureythn GE00 is madr by Fuchs in Germany - see their website.
Darina is made by Shell - see internet for comparable grease

If they have the big black handles on them just remove the rear of machine to gain access to piston.Grease up what u can see

For the people who have KANGO 900 or 950K tools made in England here are manuals to get

Beware on some parts that have a high priority in the decision toserve it or stay away to avoid a disappointment . thats when all the parts looking good but 1 very expensive part is worn and thats in the front of the Kango a very high part with priority is 01534 the anvil and the high occlusion in part 01532 the driver it must have a very heavy resist when the 2 seals are on the anvil if the surface in the driver is not smooth stay away for service of the whole tool only if you are absolutely sure its a very little unevenness but know that its have a very important function to have that front absolutely seal must be 100% or in a very short time all the o-rings in your tool will burn again and you get no NO-LOAD if the chisel is not pressed the machine will continue to beat you hear continuous and the change is the that the striker will get a rip/crack in it soon and many more defects , a service and a good function cannot be created even if all other parts are in a quiet good condition. The working principal is internal based on a pneumatic resist thats why the anvil seals are double and must not leak
http://project21designs.com/download/kango%20900%20&%20950%20manual.pdf