2014 Toro Recycler model 20333 with model 120000 Quantum 725 Series, serial #14-0210-58-45378.
Always ran well with routine carb/linkage/choke cleaning with Gumout, stabilized fuel, new spark plug, oil change, etc.
Last year started surging so removed float bowl, cleaned needle valve and surging stopped. Noticed the spring connected to choke vane was intact but bent so bought new spring (B&S OEM) over the winter and installed exactly like old spring was. Looks exactly like the old spring except not bent but much tighter. Kept choke closed too much and engine barely ran. I manually held choke open and it ran fine. Through much trial and error I've been trying to stretch the spring enough so choke opens within several seconds of starting engine. Once engine has warmed up, it's OK. I've almost got it, but this just seems too primitive and imprecise. The vane and choke plate seem to move smoothly and the linkage appears normal. Any ideas about why this has developed and/or what else can be done about it?
Always ran well with routine carb/linkage/choke cleaning with Gumout, stabilized fuel, new spark plug, oil change, etc.
Last year started surging so removed float bowl, cleaned needle valve and surging stopped. Noticed the spring connected to choke vane was intact but bent so bought new spring (B&S OEM) over the winter and installed exactly like old spring was. Looks exactly like the old spring except not bent but much tighter. Kept choke closed too much and engine barely ran. I manually held choke open and it ran fine. Through much trial and error I've been trying to stretch the spring enough so choke opens within several seconds of starting engine. Once engine has warmed up, it's OK. I've almost got it, but this just seems too primitive and imprecise. The vane and choke plate seem to move smoothly and the linkage appears normal. Any ideas about why this has developed and/or what else can be done about it?
