Geo-TH,In
Well-known Member
I have a 20 hp kohler command, ch20-64519. It
runs just fine, a little on the rich side. I have
1500+ hours on it, doesn't use oil, starts good,
no issues other than running a tiny rich which
shows up on sprak plug.
Been experimenting with blending my own E17.5 to
lean engine down, which is working well. Then
someone gave me heck, saying I could change main
jets and get the job done. That is easier said
than done. I've yet to find a source to buy any
jets. No tech source to find what jet goes with
my engine. However I did find carb rebuild kits
that show an adjustable idle jet, which mine
clearly doesn't have. I can see places where the
jet was located, but blocked off. I've also
learned that Kohler has a specific model number
for engines on different applications.
1. So what makes the kohler command different
from the other kohlers?
2. I'm guessing the older kohler engines had
carbs with adjustable jets? So When did the epa
require epa approved carbs? That would give some
idea how far back I need to go to find an old
used carb. However all I can find are the newer
carbs.
Thanks,
George
why so many different model s
runs just fine, a little on the rich side. I have
1500+ hours on it, doesn't use oil, starts good,
no issues other than running a tiny rich which
shows up on sprak plug.
Been experimenting with blending my own E17.5 to
lean engine down, which is working well. Then
someone gave me heck, saying I could change main
jets and get the job done. That is easier said
than done. I've yet to find a source to buy any
jets. No tech source to find what jet goes with
my engine. However I did find carb rebuild kits
that show an adjustable idle jet, which mine
clearly doesn't have. I can see places where the
jet was located, but blocked off. I've also
learned that Kohler has a specific model number
for engines on different applications.
1. So what makes the kohler command different
from the other kohlers?
2. I'm guessing the older kohler engines had
carbs with adjustable jets? So When did the epa
require epa approved carbs? That would give some
idea how far back I need to go to find an old
used carb. However all I can find are the newer
carbs.
Thanks,
George
why so many different model s