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Old 10-23-2011, 05:33 PM   #1
bwheelersc OP
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Joined: Oct 2011
Oddometer: 9
Dellorto PHM 38 carb

I recently went through my carb for the first time on my 95 KTM LC4 400. There is a hot start button the left side of the carb. With the carb apart, I took a look at how it worked. It just pushes up the slide a bit when pushed in. The thing is that the button does not stay in, so when released the slide goes back down. Hense, it is impossible to hold the button in and kick the bike. Is the button suppose to stay in when pressed? Just wondering if the mechanism in the button is faulty or broken. By the way, is there any product out there to get rid of the tarnish on the jets? I tried brake cleaner, etc and another product that is a degreaser and nothing will make the jets and brass parts shine, or take the tarnish off. Thanks for the help.
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Old 10-23-2011, 09:18 PM   #2
Tseta
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Katumo's Dellorto guide here mentions a few things about the hot-start button, especially:

Quote:
When you put the throttle back in, you want to set the hot start so it's close to touching the slide, but not quite. If it's too far in, the hot start will set your idle speed instead of the idle adjuster. If it's not far in enough, it will pop out and your hot start won't function. You can always adjust it later on, just make sure it's set properly whenever you change your idle speed.
Cheers,

Tseta
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Old 10-23-2011, 09:30 PM   #3
bwheelersc OP
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That is an awesome write up, I used it when I rebuilt/cleaned the carb. But the problem I am having is that the button always pops out, no matter where it is set. I have tried the full adjustment each way, and nothing changes, just how far it moves the slide. By the way, thanks for the reply.

bwheelersc screwed with this post 10-24-2011 at 01:17 AM
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Old 10-24-2011, 05:08 PM   #4
bwheelersc OP
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