Popped on a new spring thinking the old one had to be the culprit, but when I slide the engine speed lever cable to run HIGH, engine does not change rpm's. I manually did get it to rev up when I gently move the lever that the spring is attached towrd the front of engine, and there doesnt seem to be ant obstruction, but when I try the lever cable again, no change. Could it be the other (small) spring?
thanks, riv, it is a B&S engine (this forum is for B&S, right?). But I should include addl info for sure, it is on a Poulan push mower, from 1997 or so, I recently started a thread o week ago or so, maybe I can pull it up for reference/moreinfo.......let me see.......
You need to get rid of the cable and lock off the lever.
The engine is designed to run at approx 2900 rpm fixed speed.
Post a picture would be easier to explain.
I agree with pug, this engine is designed to run at a fixed speed. I doubt the engine will run to good if you try to change it. You have no adjustments or jets to allow for different engine speeds.
Hmmmmmm, (holding forehead in left hand, left elbow on desk), since day 1 in 1997 or so, the engine DID react to faster/slower speed with lever movement. Im original owner. otherwise, why would they have engineered the dumb lever/cable?
Thaks again, in helping to solve this mystery.....
I agree with pug, this engine is designed to run at a fixed speed. I doubt the engine will run to good if you try to change it. You have no adjustments or jets to allow for different engine speeds.
thhaks. still dont get why it has a speed lever, and why in the past I was able to use it . Oh well, have no choice, cant get it to respond, will just push it as speed engine revs.
The lever sets the equlibrium running speed.
ie tension on the spring opening the throttle = force generated by the governor trying to close the throttle.
The limit of travel of the throttle lever sets the maximum no load engine running speed.
The throttle stop screw sets the idle speed
Governed engines are designed to run at two speeds, idle or flat out
Weather you can attain a speed setting between max & min will depend upon the strength shape & wind of the govenor spring, the strength of the govenor mechanism and the wear in the controls.
You are not supposd to be changing the engine speed, the govenor is, which is what the others were trying to say.
As the years go on maximum governed speeds are dropping because the "nannys" want blade speeds reduced.
So my guess is the old spring was set to 3600 rpm while the new is set for 2900 rpm.
being a substantially stronger spring it is holding the throttle closed against the idle stop over a larger range of throttle openings
