ORIGINAL REVIEW
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This is the second chainsaw that I have owned and it is certainly a much better tool that my previous JCB model that had a similar specification.
Although it weighs a couple of kilograms, it is nicely balanced and, as a result, feels much lighter than it actual is.
Assembly was a tad tricky, but nothing difficult - it's just you need to take a bit of care lining up everything. It is useful that no tools are needed to assemble it, nor to adjust the chain when using it (unplug from the main first!).
In terms of cutting performance, I have used it to remove a bough off a tree in the garden that was about 12 inches in diameter, and it had absolutely no trouble whatsoever on this. Turning it into logs for the fire was also very fast and easy. The real beauty was the lack of kickback which made handling it feel very safe.
As other reviewers have mentioned, it is worth ordering some more oil Bosch Chainsaw Oil - Biodegradable (1 litre) (you only get enough to just get up to the minimum mark with the supplied pack) and a spare blade
Bosch 1.1mm Saw Chain for AKE 40/AKE 40-17S / AKE 40-18S Chainsaws ordered now will save you the hassle when you finally blunt the blade (much cheaper and easier that trying to do the sharpening yourself - not recommended).
All the normal caveats apply with usage of chainsaw (protective clothing, etc.) - just be sensible.
Final summary: This is yet another quality garden product from Bosch and, although it is a touch more expensive than other brands, the difference is really worth it.
A well deserved 5 stars.
LONG TERM TEST UPDATE
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I felt it was worth updating this review now that I have had a chance to really use this chainsaw in many different environments.
I'm happy to report that my first impressions were right and this is still an excellent chainsaw. Easy to use, fast cutting and very little in the way of kick-back.
My previous JCB chainsaw packed up when the oiler stopped working - this one seems to be both almost immune from clogging (but do check and cleanout the hole every so often) and to check it is working (put a piece of paper on the ground in front of you, run the saw for a few seconds and you should see a very fine spray pattern of oil in the straight line on the paper).
Still highly recommended and still worth the full 5 stars.