Jon1270
ArboristSite Operative
There's an outside chance I'm wrong about the cost of the part. The IPL only shows part# 1138 430 1001, which is the "trigger unit". The M-Tronic service documents, however, have a photograph of the 441 carb with two arrows pointing to the same general area. One arrow is labeled "Trigger Unit," while the other says "Solenoid Valve (normally open; replaceable)." That photograph of the whole carb is too dark to discern where one part ends and another begins. Maybe the solenoid is hidden under the trigger unit? That would make sense, I guess.
The tech document indicates that the solenoid used on both Walbro and Zama carbs is part# 0000 120 5110, but that part number isn't anywhere in the 441 IPL that I have.
I'm going to have to tear it apart again and remove the trigger unit to know for sure what's going on here.