should I mod it????

[madman39]

I recently bought a new stihl 390 to cut fire wood. My deal told me it what I need for the type of work I was doing. I payed, I think, about 580$ for it! I was very happy with it and liked the power! I have never modded a saw before, should I go a head a get the muffler modded so I can get the true power and performance out of the saw? And should I by a new modded muffler and keep my old one in case I resale it? Who makes the best modded muffler and will I need to make big time carb modds also? please help!!! Thanks, Tim N.

 

[timberwolf]

You need nothing more than a drill an 8mm socket and maybe a file and a dry wall screw to pull the limiter cap.

Pull the front cover off the muffler, pull the muffler, drill a couple holes 3/8 to maybe 7/16 in the depressed area under the defflector. Wash out the metal chips. Cut back the opening of the deflector a little with file or grinder.

Screw the drywall screw into the limiter caps and pull them out of the carb, richen the needles a good half turn counter clock wise and then lean it down a bit at a time until its right.

Not much more to it than that, just search the forum if you need more details on tuning or pulling the limiters ect.

 

[madman39]

Thank you, Thats not to hard!

 

[madman39]

stihl 390 muffler mod

Timberwolf, Do I need to worry about a limited ignition module on my 390. I ordered a used muffler off ebay for 30$. I wanted to keep a stock one handy. I will be modding it soon! Thanks for your advise!!!! Tim N.

 

[Saw Dr.]

Timberwolf, Do I need to worry about a limited ignition module on my 390. I ordered a used muffler off ebay for 30$. I wanted to keep a stock one handy. I will be modding it soon! Thanks for your advise!!!! Tim N.

The ignition is not limited on that saw. You will not ever want a stock muffler on there once you run it modded. Just make SURE you remove the limiter caps and re-tune, as TW has said. Otherwise, you get to buy a new top end.

 

[madman39]

Thanks for the info guys, I love this web page! There are some good guys out there!

 

[isaaccarlson]

Mod it.....

thats all I have to say....

__________________________________
Muffler Modded 390 with oiler mod.

 

[madman39]

I just went and pulled out the little red caps protecting the tuning screws! I used a 3" drywall screw, it worked like a charm! I cant wait to mod it!:chainsawguy:

 

[isaaccarlson]

You are gonna love it.

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[logging22]

CAD RULES!!!!