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Mikuni needle jet removal? #289201
12/16/09 7:40 am
12/16/09 7:40 am
Joined: Oct 2008
Posts: 5,014
Gnashville
DavidP Offline OP

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DavidP  Offline OP

BritBike Forum member
Joined: Oct 2008
Posts: 5,014
Gnashville
OK, I bought the Victory book. The chart says the jet just pulls out, yeah, right.
So, how does one remove the needle jet without messing it up with pliers?
Maybe strip everything from the carb and put the body in the oven?


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
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Re: Mikuni needle jet removal? [Re: DavidP] #289204
12/16/09 9:13 am
12/16/09 9:13 am
Joined: Mar 2007
Posts: 37
Central TX
bones_bir Offline
BritBike Forum member
bones_bir  Offline
BritBike Forum member
Joined: Mar 2007
Posts: 37
Central TX
pull the bowl, and remove the slide. turn it upside down, remove the main jet and ring. then use a soft drift to push the needle jet up through the upper part of the body.

Last edited by bones_bir; 12/16/09 9:14 am.
Re: Mikuni needle jet removal? [Re: bones_bir] #289294
12/16/09 10:06 pm
12/16/09 10:06 pm
Joined: Feb 2003
Posts: 2,930
Ohio
R
Rickman Offline
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Rickman  Offline
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R
Joined: Feb 2003
Posts: 2,930
Ohio
Yeah,
DON'T use pliers, or anything hard! ..... MAYBE tweezers to re-insert the needle jet, upon reassembly...

There is a machined step in the carb body, the needle jet cannot be pushed 'down'. It must be pushed up through the [round] slide area.
There is also a locating pin... It orientates the needle jet...

You can also, on most Mikuni's I've seen, put the main jet back on the needle jet, after removing the 'ring', or washer as I call it, and use the flat face of the main jet as a pushing surface. JUST snug the jet...

Anything else?

Last edited by Rickman; 12/18/09 2:30 pm.
Re: Mikuni needle jet removal? [Re: Rickman] #289318
12/17/09 1:23 am
12/17/09 1:23 am
Joined: Aug 2001
Posts: 2,588
Springfield Nebraska
Richrd Offline
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Richrd  Offline
BritBike Forum member
Joined: Aug 2001
Posts: 2,588
Springfield Nebraska
when all that fails, torch the carb body until it's just too hot to hold, then push the jet out. (wear gloves)


Rich (member ThreeMustGetBeers)
"It's not always about going fast. Sometimes it's nice to slow down" (Wendy E.2016)

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Re: Mikuni needle jet removal? [Re: Richrd] #289375
12/17/09 8:54 am
12/17/09 8:54 am
Joined: Oct 2008
Posts: 5,014
Gnashville
DavidP Offline OP

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DavidP  Offline OP

BritBike Forum member
Joined: Oct 2008
Posts: 5,014
Gnashville
Thank you gentlemen.
That was easy enough with a wee bit of heat. I'm always leery of taking even a small hammer to anything without advice.
Now, at least I know they both have p-4 needle jets.


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"


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