M7 and the Cherry Tree #3: The concluding Part

  • Advertise with us
Blog entry by Tony posted 06-28-2007 07:04 PM 7878 reads 1 time favorited 12 comments Add to Favorites Watch
« Part 2: Final Day of Cutting with the M7 Part 3 of M7 and the Cherry Tree series no next part

So finally I have recovered some energy from lifting those heavy logs on my own – now that summer has finished here – we had 7 days of sunshine, the longest day of the year has passed and winter is racing towards us (My wife says whoopee “soon it’s time for skiing”) I will try to give some information on M7 and Stihl 660 used for my Cheery tree cutting.
Let’s deal with the Stihl 660 first of all. I am not going to bore you all with the technical details; these can be found on the Stihl website

Photo Sharing and Video Hosting at Photobucket

The first thing to note is that my Stihl 660 was delivered with a 70cm Blade (Logosol), not the standard 40cm, at my request.

So this saw uses 25 parts petrol to 1 part 2-stroke oil. Unlike the rest of my equipment has a 40:1 petrol/oil mix. Once the chain-oil reservoir and petrol/oil tanks were filled, the blade and chain attached – we pulled the chord a few times and the saw burst into life – we let it idle for a few minutes and then checked that the chain oiler was working – No problems, just a trace at the tip as it was supposed to be.

Once the motor is warm, in between cuts, the motor starts first pull every time – but run out fuel, refill and then try to restart – it is a “bitch” could do with a little primer pump.

I did use the saw on its own, without the M7 – it worked like a dream, cutting (cross-cutting) through the 1m wide stump of the Cherry tree, like a hot knife through butter.

When used in conjunction with the M7 (Rip-Cutting) I could not fault the performance of the motor, even when the blade was fully embedded in the log being cut.

The only down side was that my saw was delivered with a Swedish/Danish/Norwegian/Finnish manual, not a word of English anywhere – Hardly surprising since I live in the middle of these countries. Luckily, I was familiar with chainsaw procedures and spoke some German (some similarities to these languages). No download was available in English from the net, but a quick e-mail to and a few days later a lovely new ENGLISH hand book was in the mailbox.

So onto the M7. My M7 was provided by the manufacturers Logosol from Sweden, but this is available worldwide at, just select your country or language from the menu.

Photo Sharing and Video Hosting at Photobucket

The Technical details about the M7 are here

Photo Sharing and Video Hosting at Photobucket

The M7 arrived with the Stihl 660 in 5 boxes, 2 boxes for the M7, 2 for the Stihl, and the 5th for some other accessories I purchased.

On unpacking the M7, I found the manual to be in Swedish only – So being a good engineer, ignored the words and looked only at the pictures and started to assemble the saw the way I thought is should be assembled – about an hour later, I decided that a quick trip into the house to the PC would be beneficial, I downloaded the latest manual from Logosol in English, whilst I was waiting for my coffee to cook!

All the Nuts, bolts, washers are packaged into 7 bags – Each bag contains exactly the correct amount of materials for competing 1 or 2 pages of instructions. There is also a bag containing a mixture of all the Nuts, bolts and washers you have already used as spare parts – great idea (take them with you if you go into the field, you will need them). Do not forget the associated spanners and Hex keys.

Following the written guides as well as the photographs it was much easier – not that the assembly is difficult – it was easily achieved in 4 hours, including coffee.

The next day, I set the M7 out on a perfectly flat and level surface and proceeded to double check the angles and tightness of the bolts – I then gave the all the silver parts a quick spray with Boeshield T-9


The M7 is not really heavy – about 60kg (160lbs), but with a 5m50 (18’) boom attached it can be a little difficult to get the balance and lift it on your own. Any way, I got mine into my 8’*4’ trailer without too many problems.

Next I made a set of steps to help load the logs onto the M7, see the previous blog – In the Logosol videos and literature, they show a 2 pier step system, I built a 3-pier step system, as I knew the first logs I must cut were less than 2 m, and this would aid me moving these heavy lumps of wood on my own. These were loaded into the trailer as well.

Before I set off on my first expedition to recycle this Cherry, I re-watched the Logosol’s Videos in Swedish, re-read the instruction manual, and generally got a good feeling for the operation of the machine before leaving.

So the first important step to cutting good wood. Make sure you have a firm and level base and that both the legs of the M7 are co-planer, if they are not, you will twist the rail and not get a good cut. This took me about 45 minutes, but this included digging out some of the ground to get the M7 and the steps level – Each site will be different. I will be making a permanent base for the M7 at home, just in case I cannot cut my lumber on the owner’s site.

The operation was simple and smooth, as expected. The only fault I found was that some of the square nuts (not Nylock) decided to vibrate loose on the second day. A couple of nuts were lost; luckily I had my bag of spare parts and spanners with me.

What more can I say – I highly recommend the Logosol product, I have received nothing but excellent support from the team in Sweden. I am looking forward to the autumn (October/November) to start my next batch of timber cutting.

If any of you have got any specific questions about the operation of the saw or M7 please post your questions here or e-mail me, I will be more than happy to answer them. I hope you enjoyed the short series

-- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (

12 comments so far

View MsDebbieP's profile


18615 posts in 4156 days

#1 posted 06-28-2007 07:08 PM

you make it look so tempting!!
Not that I have any trees to cut… but it looks very rewarding

-- ~ Debbie, Canada (

View Tony's profile


986 posts in 4026 days

#2 posted 06-28-2007 07:10 PM

Debbie, I thought you had a lot of trees in Canada? There must one or two that you could recycle into useful objects!!!

-- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (

View MsDebbieP's profile


18615 posts in 4156 days

#3 posted 06-28-2007 07:20 PM

my family owned a bush lot but we sold it and it is now part of the local Conservation Area.

And yes, I do have a tree or two – but I’m busy PLANTING them.. not cutting them down!!! lol

We have one big maple that is coming to its end. It lost a branch last year (the branch was as big around as most trees)... it got chopped up for fire wood… we won’t let THAT happen again!!

When the tree meets its demise in the next big storm I’ll just have to borrow your toy. :)

-- ~ Debbie, Canada (

View woodspar's profile


710 posts in 4095 days

#4 posted 06-28-2007 07:37 PM


Thank you (danke) for posting such detail about the M7. I have a few oaks in my backyard that might make for some good wood. Maybe the next time you are in Massachusetts, USA…

-- John

View Tony's profile


986 posts in 4026 days

#5 posted 06-28-2007 08:10 PM

Bitte, I wish we had oak here, but no chance, they are only in the parks! No plans fo MA, but I’ll be in CA & BC early next year.

-- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (

View oscorner's profile


4563 posts in 4306 days

#6 posted 06-28-2007 08:45 PM

Thanks for the write up on the M7 and your chainsaw. It was very informative and now I know who to call when I need to lift about 60kg (160lbs). LOL. You make it look easy.

-- Jesus is Lord!

View Bob Babcock's profile

Bob Babcock

1804 posts in 4082 days

#7 posted 06-28-2007 09:22 PM

Great Blog Tony. How long does it take for you to cut a log like the one shown?

-- Bob, Carver Massachusetts, Sawdust Maker

View Tony's profile


986 posts in 4026 days

#8 posted 06-28-2007 10:04 PM

Oscorner – That was not me lifting the M7 – It’s a publicity shot.

Bob – This photograph is a publicity shot – but it would depend on how hard the wood was – Pine/Oak and how many slices you wanted to make 4/4, 6/4, 8/4 – I would guess about 3 – 4 minutes per slice, including removing the board and stacking it, before you start the next board

The Cherry tree l cut up took me about 20 hours + 6 hours of setting and cleaning up. ,but most of the logs were too short for the M7, which made it more difficult and took longer.

-- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (

View mot's profile


4911 posts in 4032 days

#9 posted 06-28-2007 10:07 PM

That system looks great! My area is full of Spruce and Alberta Mahogany (Aspen Poplar.) Neither of which is worth the trouble. Neat system though!

-- You can discover more about a person in an hour of play than in a year of conversation. (Plato)

View Tony's profile


986 posts in 4026 days

#10 posted 06-28-2007 10:28 PM

Hi Tom, Very simular situation here – Birch, Aspen, Alder and Pine and Pine and Pine and some more Birch.

Mature trees here only cost about $10 to $15 each – With the cherry, I was given the tree before I bought the mill. The cost of North American Black Cherry is about US$9.50 per board foot here, when I buy 420 BF at a time. Assuming that from the 800bf of lumber I cut, that 30% is High Grade and the rest is not useable (it will not be wasted, I’ll find some good use for it) – then the one tree has paid for nearly 1/2 the cost of the M7 and Saw – A good investment, but only when the oportunity arrises.

Keep your eyes open in the municiple Parks and Large Gardens, there are some real good gems to be found after a storm!

-- Tony - All things are possible, just some things are more difficult than others! - SKYPE: Heron2005 (

View David's profile


1969 posts in 4134 days

#11 posted 06-29-2007 07:35 AM

Tony -

This was a great series! I very much enjoyed following along. I have to admire your saw choice – I have a Stihl 032 and I love it.


View Brett's profile


49 posts in 1324 days

#12 posted 04-17-2015 02:00 PM

Great series!

-- Brett, United Kingdom,

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics