Just noticed to the left of the idle jet is a idle mixture screw. Appears to be set on the lean stop. If you turn counter clockwise you should be able to richen the idle. There are stops to limit how much it can be turned.
The plastic screw retains the jet and also serves to set the idle on some models. In your case the servo motor set the idle so more than likely only used to retain the jet.
The idle jet can cause the exact symptoms you are having as it controls mixture at idle but also off idle also. I wouldn't by- pass anything until the idle jet is cleaned and the unit is tested.. The motors more than likely will find there way once the unit is fired up. The computer should take...
I'm no expert but it sounds like the idle jet needs cleaned. Take the plastic screw out keeping track of how many turns it takes. Carefully pry the plastic jet out and give it a good cleaning. I would also take the main jet and emulsion tube out and clean them. The hole on the main jet is very...
Don't know why the pitch is marked 3/8 on the box but 46RMF is .404 .063 full skip micro. Cutters are stamped with a 4 and drivers are stamped with a 6. Thanks for noticing.
This is what Stihl shows....................
PART NUMBER
DESCRIPTION
ASSEMBLY
1121 007 1037
Rim sprocket kit 0.325" 7T
MS 260(Clutch, Chain sprocket)
MS 260 Pro(Clutch, Chain sprocket)
MS 270 C-B(Clutch, Chain sprocket)
MS 270(Clutch, Chain sprocket)
MS 280(Clutch, Chain sprocket)...
Bump up for a newer version:
https://s3.amazonaws.com/com.bryanequipment.cms.public/bryanequipment/media/bes-media/marketing/pdfs/2019-technicalreferenceguide-finalweb_12-14-18-compressed.pdf
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