No change in rpm H/L adj

[StihlFroling]

On my BG 85 blower, I don't get hardly any rpm change when I adjust the H needle. It just kinda makes it sluggish to snappy. Limiters are removed and its 3 years old. This is the first year I noticed the primer bulb acting up. Just wondering if these carbs are like this or time for kit or new carb. Plug is very nice, same since day one. P&C is mint. Runs good , other than I'm not getting any change.

 

[treesmith]

The spark screens on those love blocking up, undo the nut on the exhaust, it runs well without it

 

[juttree]

The spark screens on those love blocking up, undo the nut on the exhaust, it runs well without it

+1

 

[StihlFroling]

It's gone already but thanks. And yes it did. I had a hard time testing something consistently to see if it did anything. But I did finally find it would blow the same heavy object about 2 feet to 2 1/2 farther. I didn't notice any rpm change just louder. And a tad more peppy. I mean I can turn the H screw in 3/4 of a turn till it stops and it doesn't effect rpm. Is this just an EPA carb thing. My older non EPA carb blows WAY better, like double the distance.

 

[StihlFroling]

My post it be gone,,,,screen already gone

 

[redfin]

Iirc the screws are reversed on that blower. Turns in to richen.

Edit, maybe should have said clockwise.

 

[treesmith]

Its odd that you can change the screw so much without rpm change, is the air filter clean? if it was mine I would pop the carb off and clean it, be gentle with the diaphragms, maybe just order new ones, you can get crap under the little meter lever, careful there's a spring. if in doubt take pictures as you take it apart, clean through under h+l screws. Ive used air, carb cleaner and brake cleaner on carbs but careful, brake cleaner can eat plastics and rubbers.
do spark plug and decent fuel filter too