HI Trex,
I bought one of these over a year ago and I'm having trouble with chain lubrication. I Don't know if it's an intermittent blockage or a design fault. Either way the service department were just a waste of time and they've had three goes at it and I've run out of warranty so I will not use it unless I ever get a chance to fix it myself. Like any product these days I wouldn't buy it unless you read a lot of good reviews about it as warranty usual means nothing for any brand cos there just aren't enough good tradesmen left to go around to all service departments. However if you have time to exercise you consumer rights then you might want to risk it because it does work very very well and I would have electric any day rather than petrol cos they are far more reliable. I have quiet a few other Sthil battery products and they all work very well. Battery power is not quiet as convenient as you might think cos it is not a good idea to store them fully charged, if you do you will shorten the battery life. It's an unfortunate fact about lithium ion batteries. It' s a bit inconvenient for me as I sometimes get very narrow windows of opportunity to cut the grass. I would have preferred 240V for all my tools but I needed a mower first and Sthil only made a battery mower then it seemed logical to buy the next tools that use the same battery.
Good luck

I have similar issues with an HTA85 purchased in New Zealand - I will be exercising my consumer rights if needed as the unit is used domestically only and will be covered by the NZ Consumer Guarantees act. All my other Stihl tools are excellent.