Stihl 017

[Maxd]

Hi all...👋

I'm new here and would like to know how to set up the ignition module on my 017 which I am giving clean up and a bit of tlc ... Is it a case of just screw it on or what..

Appreciate your help and advice👍

[adw]

No fan of Stihl, however I guess it would be the same as the Husqvarna machines, so the screw holes in the ignition unit will be slotted, turn the flywheel so the unit is away from the flywheel magnets, slacken the units fixing screws, use a suitable gauge, probably a feeler gauge set at 0.3mm, place it between the ignition unit core, now turn the flywheel so the gauge is sandwiched between the unit and the flywheel magnets, then just tighten the screws, done.

[spudulike]

Sounds good to me...crack on....

[Maxd]

Also on this saw the switchshaft keeps popping out of its place and won't stay fully down when doing a cold start and then the unlike usually when you pull the throttle trigger and the shaft pops up this doesn't happen... Any ideas on what the problem may be and how to sort it out?

Thanks for the help so far

[adw]

On the few Stihls I have worked on this is pretty common, I guess it is wear in the clamp jaws on top of the tank, probably a new tank to completely cure it, or some type of home mod, a small bracket over the top, or maybe a small tie strap to close the jaws up a bit.

[spudulike]

1 hour ago, Maxd said:

Also on this saw the switchshaft keeps popping out of its place and won't stay fully down when doing a cold start and then the unlike usually when you pull the throttle trigger and the shaft pops up this doesn't happen... Any ideas on what the problem may be and how to sort it out?

Thanks for the help so far

That is one of those issues that is best diagnosed in front of you. Difficult to see if it is the clamp the control shaft pushes in to is worn or if something else is broken or the retaining/earth spring is deformed.

[ChrisNewport]

it will be the white U shaped hook that the control shaft sits in, it will be either well worn or snapped off. if its worn there is a fix with a 1.5mm drill hole and a bit of wire, if its snapped the fix is the same but a lot more fiddley

[Maxd]

What is the best way to put piston rings on a saw as I have an ms170 that needs piston rings I managed to get one on but have Brocken the other😕

Edited April 3, 2022 by Maxd

[adw]

It’s something you have to learn yourself, I cannot give a good explanation it’s just knowing how much to open the ring usually with your thumbs or thumb nails over the top of the piston, if you are breaking them you are opening them too far, it’s just enough to get it over the piston.