Makita dcs7900 vs ea7900..?

[Maxnaggle]

Yeah there's only one item to remove to be honest. Only a slight gain in noise. I only had some manky fluted Connie at home so wasnt able to properly gauge just how much quicker the saw is in the cut. Using the saw tomorrow so will report back how it goes!

 

I removed the entire slr system including the flange which goes into the exhaust port

 

I did find a thread on another site with pics which Ill try and find, a much tidier job than mine!

[woodwizzard]

That would be great, thanks.

[Maxnaggle]

http://www.arboristsite.com/community/threads/just-bought-a-new-dolmar-7910.246721/

 

Scroll down to see how it's done, this the guide I copied.

 

Ran the saw today and got into some large timber and it's defo an improvement in power.

 

Only slightly louder, saw is still fine to use in domestic situations..

 

Love it!

[woodwizzard]

Thanks Max. Are the inerds bolted in place inside the exhaust and have you felt the need to adjust the carb?

[Maxnaggle]

there are 2 fiddly things about the job - the first being uncrimping the muffler, which you need a blow torch for if you want to do it nicely (or simply grind the crimped metal off and braise it closed afterwards (ive not tried this, this is word of mouth through the net)

 

the second thing which is fiddly is cutting the mounting bracket off of the SLR system. if you look at the photos you can see the peice hes had to braise on the inside of the muffler. i used a 4 inch grinder for this, and it didnt look pretty! would recommend a small rotary tool. tacked it it place with a welder...

[Maxnaggle]

and yeah, the saw has a rev limiter so even if its running really lean it will still clatter off of the limiter, makes it a bit harder to tell whats going on with the saw - what i did was tune it rich, and then take some time with it in some big sycamore today and slowly lean the saw out again until it stops '4 stroking' in the cut. yet to do a plug chop. I'm not a saw mechanic! ideally you would want a tach i suppose. I'm going to keep a close eye on the spark plug i think!

[DCS6800i]

Does that mean the 6800I is redundant now:lol::lol:

 

 

Nooooooo!!!!

 

Still on the lookout for a donor saw to get her going again. It just means I'm in no urgency to resurrect the best... when I do get her going, it's be for pleasure rather as work