Export thread

briggs choke cable to non electronic automatic choke swap

#1

davbell22602

davbell22602

407777
0124 e5
010419yg

Im using this engine on mower doesnt have a equipped choke cable setup. The choke is built in on the throttle cable. How do I do this procedure?

Its going on a husqvarna yth24v54 original engine was a briggs 44r777. PO blew the engine within the first 22.8. This looks like brand new mower minus the engine.


#2

B

bertsmobile1

If you have the choke fittings on the carb just buy a long choke then find a convienant place to drill a hole in the dash to mount it
Universal choke cables come in a couple of lengths, slide the inner out & cut the outer to fit then slide the inner back in cut it off & put the Z bend in


#3

davbell22602

davbell22602

I dont want the choke cable. I want bypass it the other way without using a choke cable


#4

B

bertsmobile1

In tat case you will need to replace the throttle lever as the no choke ones do not have enough travel to do both throttle &^ choke


#5

davbell22602

davbell22602

I'm not bypassing the throttle cable. This setup with separate cables. Just wanna do away with the choke cable.


#6

B

Bertrrr

Install a primer bulb no need to choke


#7

StarTech

StarTech

You need the auto choke control bracket off an engine that has that setup and probably the choke rod.

Never tried the conversion so I have no notes here on it here.

So need to find a mower with that setup and pull that engine's IPL and do cross checking. Be careful there are several versions out there. And one can be costly as it requires changing the intake.


#8

B

bertsmobile1

What he said
I have also found that there are a lot of variations in the actual length of the choke bell crank and length of the choke rod.
So now when I do engine swaps with the same series engines I do as Star has suggested and swap the control brackets as well.
A lesson I learned the hard way having been required to do dozens of warranty services on an engine replacement till I twigged that the bell crank was shorter so was not closing the choke fully .
Not a problem starting in the workshop as it was always hot but customer likes to mow early morning so in their case engine & air was quite cold .


#9

davbell22602

davbell22602

Sounds like from what your telling me its just easier to add the choke cable. Im not crazy on drilling hole in the dash on new mower that has 22.8 hours cause it would decrease the value of it. This engine would be using it temporary til found the right engine for the mower. I updated info on the first post.


#10

B

bertsmobile1

Get a right angle mounting bracket from a car parts store and use one of the dash bolts to hold it in place , or any other existing bolt.
Just cut the universal choke cable to length .


#11

StarTech

StarTech

Well here is a list of possible items.

Choke link 796229
Choke return spring 799771
And one the following brackets 796226, 798915, or 798916 Just don't which of the three you need.

Also you may need to change out the choke shaft if it don't the return spring already.

Reference material
1675018539780.png


#12

davbell22602

davbell22602

Well here is a list of possible items.

Choke link 796229
Choke return spring 799771
And one the following brackets 796226, 798915, or 798916 Just don't which of the three you need.

Also you may need to change out the choke shaft if it don't the return spring already.

Reference material
View attachment 63310
My plan was to use a choke matic carb plus whatever I need to use to delete the choke cable feature on the vtwin.


#13

StarTech

StarTech

Just be aware that the 44R877 auto choke carburetor uses a completely different return spring setup as uses an air vane to crack open the choke once the engine starts. Also it uses a different intake manifold setup as one end of the choke return spring is attach to the intake manifold and not the carburetor.


#14

davbell22602

davbell22602

Just be aware that the 44R877 auto choke carburetor uses a completely different return spring setup as uses an air vane to crack open the choke once the engine starts. Also it uses a different intake manifold setup as one end of the choke return spring is attach to the intake manifold and not the carburetor.
Im not using parts from 44r877. Im using the other engine and deleting the choke cable feature.


#15

StarTech

StarTech

One good note here and that the 44R intake will also work for the manual choke models and is cheaper. I know this for sure as I installed one last year on a manual choke engine.


#16

davbell22602

davbell22602

One good note here and that the 44R intake will also work for the manual choke models and is cheaper. I know this for sure as I installed one last year on a manual choke engine.
I dont have the 44r engine. PO didnt give me the blown 44r engine. Im using a 407777 0124 b5 engine.


#17

doug9694

doug9694

I dont want the choke cable. I want bypass it the other way without using a choke cable
You mean by the throttle control being all the way past fast? The choke is usually operated by a wire coming off the speed control arm that only activates when past full throttle.
You may have to get a different control plate and the right activator wire.


Top