Bonus: TMR MJN38Φ carburettor on a Bandit 1200 K5

 

 

 

 

 

 

 

 

 

 

 

 
This is our first time doing carburettor maintenance on a Bandit 1200, so we’re looking forward to it.
Once we start the installation, we realize things are progressing surprisingly smoothly.
Unlike the GSF, the air cleaner can be removed. Once you take off the intake manifold, the box comes off easily.
Next is the throttle cable, but we use the stock switch holder as is.
The stock throttle cable is long, so we adjust the length by fitting it to the actual installation.
(At this point, the TMR cable mounting bracket can be adjusted in two stages, so we position the throttle cable horizontally
at the lower hole position)
If possible, it’s safer to use a set screw rather than solder it in place.
Next is the fuel petcock replacement. It’s not absolutely essential, but if you’re using it on the track, it’s worth doing.
A high-flow petcock has a flow rate that’s incomparable to the stock one.
This time we used a Pingel 3/8 size “ON-RES-OFF” petcock.
I’m not sure if a 1/4 size would fit directly, but we have a track record of using 3/8 on oil-cooled bikes,
so we’re going with this one.
Since the Pingel strainer diameter is larger than stock, we need to enlarge the petcock inlet.
We carefully enlarge it with an air rotary tool, trying not to let debris fall inside.
At this point, we’re almost done. The rest is just installation and tuning.
This time we’re still missing a few things like a catch tank, so we’ll stop here for now.
By the way, this is a bike with the secondary air removed.

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