TurboDiesel 2 #1 Posted December 24, 2019 I just got my first wheel horse and this is my first post to this forum. It is a B112. The throttle plate is stuck wide open in the carburetor. When I move the throttle lever on the dash, the throttle plate doesn't move. The wire which connects to the lever does, and then it goes to some sort of contraption when connects a rod to the governor. The contraption doesn't move the rod which goes to the governor. The rod seems to be spring back into full throttle no matter where the lever is. I noticed that the rod springs back more when the lever is on full throttle compared to idle, but the rod still springs back which keeps the machine at full throttle. I have a picture of where the wire moves some sort of level which moves the spring which is connected to the rod. Thank you. 1 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,161 #2 Posted December 24, 2019 Welcome to the forum. I can not answer your question without guessing. The throttle cable adds tension to the spring to increase rpm. The spring pulls on the governor lever. The governor tries to reduce rpm. The faster it runs the more tension it crates to reduce the rpm. The balance of those 2 forces is the rpm you end up with. The governor arm must be matched to the carburetor and this adjustment is done with the engine not running. It should be covered in this service manual. Your engine should be model 252707-0206-01 so use the 250000 or 252700 series instructions in the Governor section. Keep us up to date on your progress. Garry Share this post Link to post Share on other sites
wfrpalm 218 #4 Posted December 24, 2019 Everything looks very rusty, some penetrating oil and steel wool might do the trick. Good luck. 1 Share this post Link to post Share on other sites
953 nut 56,432 #5 Posted December 24, 2019 Take your time and allow the penetrating oil to do the work. Don't force anything or it may break. Share this post Link to post Share on other sites
wallfish 17,141 #6 Posted December 24, 2019 (edited) Is this condition with the engine running or not running? By the missing blower housing in the pic, i'm guessing without it running. The governor will not push the throttle closed until it's running and the throttle plate may remain constantly open if it is not running. It's also possible the the throttle plate is rusted in place. You should be able to easily move it by hand so check to see if it's stuck Edited December 24, 2019 by wallfish Share this post Link to post Share on other sites
TurboDiesel 2 #7 Posted December 24, 2019 Thank you for all the replies guys. I'll try putting some penetrating oil on the mechanism. It may just be like that because it isn't running. Share this post Link to post Share on other sites
TurboDiesel 2 #8 Posted December 24, 2019 I lubed up the throttle cable and put the carb back onto the machine. After playing around with the throttle plate while turning over the engine, it started. The problem seemed to be that the throttle plate was being shut while the engine was turning over, and the idle screw was barely screwed in. Thank you guys for all of your help. Share this post Link to post Share on other sites
peter lena 8,945 #9 Posted December 24, 2019 turbodiesel, welcome to the site , lubricate the cable cover so that the oil continues to lube it as it works , not just the mechanism , you should also get after the behind the dash starting point , ideally oil will drip out the end . you could even unhook the cable to verify its smooth function , at that time you can lubricate the mechanism , to insure you have freed up both parts of the linkage, pete Share this post Link to post Share on other sites
