Originally Posted by grumpy
First, how your choke works. You have a Choke-A-Matic feature on your Pulsa-Jet carburetor. Here is how it should be set up:
[Linked Image]
It automatically pulls out the choke when you set the speed control to the choke position, and opens it when you move the speed control back to the maximum speed position. Please operate the speed control through its full range and check that this is happening correctly. If it is, please report that, and also describe any shortcomings in the way the engine starts, runs, and varies in governed speed when you operate the speed control.

I'm not an SB45 guy, but I'm used to them having a remote control fitted so you can adjust engine speed, choke, and kill switch from the handlebar. Your machine does not appear to have a remote control connected to the governor:
[Linked Image]
Note that this illustration shows a Vacu-Jet, so the choke pull-handle runs horizontally instead of vertically. Also, this version does not have Choke-A-Matic. However the purpose of the remote control is to operate the speed control lever, whether it has Choke-A-Matic or not.

Here is an SB45 with the normal remote control fitted:
[Linked Image]
The picture is of tezza98-tnharris's SB45, shown in this thread:
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=14957&page=5

Note that like the previous illustration, this one has a Vacu-Jet, not a Pulsa-Jet, so the engine is an 80102, not an 80202, and it did not come with a Choke-A-Matic.


Thanks for the reply grumpy. I have a few questions.

On my throttle control i have basically only slow to fast so when you say choke control when or how do you do this? I think i can only do this when i set the throttle to fast speed. Is this the way to do it?

When you say governed speed do you mean a consistant speed thru throttle range?

You mention that your used to having be able to adjust the speed,choke and kill from the handle bars. When i connect the throttle cable(i will do this and then show a picture) i can do this when connected to the speed control lever arm. Is this what you meant?

Just to let our fellow members know i found this on the web describing how the air and fuel work with this pulsa jet carby.
http://www.compgoparts.com/TechnicalResources/BriggsCarburetors.asp