Helping my cousin with his FS90.
Never tuned carb on 4-mix motors. What is correct way to set Hi/Lo on these? Have done many 2-stroke chainsaws "by ear".
Also cover shows 3/4 out for both Hi/Lo. But..... the Settings were 3 1/2 Hi , 1 1/4 Lo.
Another thread mentions this/these changes :
"
FS 90; FC 90, 95; KM 90 (C1Q-S110) – Open the high speed screw H 3 1/2 turns counterclockwise. – Open the low speed screw L 1 1/4 turns counterclockwise."
https://www.arboristsite.com/threads/stihl-fs-90.368963/#post-8056214
Any advice on this?
Will be going to "Beg for Manuals" next.
Never tuned carb on 4-mix motors. What is correct way to set Hi/Lo on these? Have done many 2-stroke chainsaws "by ear".
Also cover shows 3/4 out for both Hi/Lo. But..... the Settings were 3 1/2 Hi , 1 1/4 Lo.
Another thread mentions this/these changes :
"
"There is an old FS90 and a newer FS90. Newer initial settingsHow on earth do I tune the carb on one of these 4 mix engins? I had to slap a new carb on and now have no baseline for carb settings.
FS 90; FC 90, 95; KM 90 (C1Q-S110) – Open the high speed screw H 3 1/2 turns counterclockwise. – Open the low speed screw L 1 1/4 turns counterclockwise."
https://www.arboristsite.com/threads/stihl-fs-90.368963/#post-8056214
Any advice on this?
Will be going to "Beg for Manuals" next.