1993 14SZ Mower Briggs&Stratton 5HP Engine Model# 124702-3214-01 Choke Question

[controltestguy]

When the lever is placed in the 'choke' mode, the choke does not close all the way. There is a spring that pulls the choke closed. The bottom part of the spring that connects to the choke lever connects to a plastic piece and sits in a notch rather than a hole that the spring wire would go through. Does anyone have a picture of this installed spring. This issue just cropped up. Not sure if a piece broke off the where the spring connects. The mower has run flawlessly for almost 30 years. Thank you for your help.

Regards,

ctg

 

[bertsmobile1]

chokes are always spring loaded to open not to close
If there are 2 holes on the choke control plate on the top of the carb, shift it to the other side

 

[controltestguy]

There are two levers on the handle of the mower. The gearshift handle and the throttle handle. To start with, I removed the spring. It appeared that the coils of the spring was rubbing against this plastic piece on the choke shaft. (I'll see if I can take a picture of the carb and choke). The throttle handle has three positions: slow, fast and choke. When the throttle is in the fast position with the spring removed, the choke is forced open all the way by the throttle linkage. The choke plate is not free to move by hand at this point. When the throttle lever is in the choke position, the choke plate is free to move by hand all the way to the close position and back to about 50% open. On this mower, the choke has to be 100% closed for the engine to start on a couple of pulls. The only way that can happen is if the spring pulls the choke closed. However, the choke is not closing on it's own. I can push lightly on it and it will close. When I place the lever in the 'fast' position, the choke will be 100% open. This mower has never been in the shop in 30 years. Never had a problem with starting. Never had the need to even look closely at the carb.Did not even know there was a spring on the choke plate assembly. I have replaced the pull-start assembly once but never had an issue with the carb. I need to see an actual B&S engine or a picture of one showing the choke assembly with the spring. I have a couple of new springs ordered. Will be in touch.

Thanks for the help

ctg

 

[controltestguy]

I found a picture of the choke shaft and spring. This is what's on my machine.

 

[slomo]

The mower has run flawlessly for almost 30 years

Wow. Got your money out of it for sure.

Choke shaft might be binding up in the carb.

Either finger move the choke plate at the linkage connection or remove carb. Look inside carb body at choke plate. Should have full open and closed positions. If you have binding you will have to pull the shaft out and polish it up till she moves free.

 

[slomo]

618 is your choke linkage.
201 is your governor linkage.
209 is another gov linkage.
202 is a control link.

 

[slomo]

 

[controltestguy]

The choke and shaft are free with the spring (618) removed. The new springs (I ordered 2) should be here 7/13/22. I'll try it again. The mower was drained of oil and gas last week and power washed. It's pretty clean. Yeah, this things amazing when it runs. Usually starts up on the second pull. I'll keep looking for a picture of the spring install but I know where I removed it from. Maybe it got stretched too far over time. I'll report back after I install the new one. Thank you all for the help.

ctg

 

[Fish]

Looking at that model number parts lists, makes it look like your carb does not have a choke. Or am I mistaken?

 

[Fish]

No, I see the other carb, here is a better pic of the choke.
Is this it?