Newbie main jet removal question?
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Enthusiast
Owned Vespa Rally 200, V90, Li150 series II...now a PX200
Joined: 26 Jun 2018
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Location: Fukui, Japan From San Diego
Tue Sep 10, 2019 7:03 pm quote
Trying to change my main jet, but it seems to be stuck in the stack pretty good. Any tips and getting it out. I've probably already screwed it up using pliers to get it out.
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Honda elite
Joined: 19 Jun 2007
Posts: 535
Location: California
Tue Sep 10, 2019 7:31 pm quote
use a nail or wire in the hole and pull
Enthusiast
Owned Vespa Rally 200, V90, Li150 series II...now a PX200
Joined: 26 Jun 2018
Posts: 77
Location: Fukui, Japan From San Diego
Tue Sep 10, 2019 7:43 pm quote
hibbert wrote:
use a nail or wire in the hole and pull
Will that not ruin the bore size?

Edit:Tried it. Still stuck.
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2001 LML 150
Joined: 16 Jul 2017
Posts: 310
Location: Melb, Aus
Tue Sep 10, 2019 8:03 pm quote
Iíve used a piece of fishing line in a big loop and pulled with a screwdriver handle.
Any strong and relatively soft thread or line should work..
Enthusiast
Owned Vespa Rally 200, V90, Li150 series II...now a PX200
Joined: 26 Jun 2018
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Location: Fukui, Japan From San Diego
Tue Sep 10, 2019 8:18 pm quote
Philos wrote:
Iíve used a piece of fishing line in a big loop and pulled with a screwdriver handle.
Any strong and relatively soft thread or line should work..
Too late. The main jet that's on there looks ruined and it's still stuck. Looks like I'm just going to have to order a new mixer tube. a 5 min job just turned into a whole week of waiting.
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Tue Sep 10, 2019 9:17 pm quote
Wrap a rag around the jet tip and pull with some pliars.

Got a pic of how bad it looks?
Enthusiast
Owned Vespa Rally 200, V90, Li150 series II...now a PX200
Joined: 26 Jun 2018
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Location: Fukui, Japan From San Diego
Tue Sep 10, 2019 9:53 pm quote
MJRally wrote:
Wrap a rag around the jet tip and pull with some pliars.

Got a pic of how bad it looks?
Manged to get it out. Heated it up and used pliers. After that it wasn't to bad taking it off and on. The new jet felt like a tighter fit though It's gonna suck when I have to change it again.

IMG_4768.JPG

Molto Verboso
2005 PX150 In a Love-Hate Relationship with a 2-Stroke Vespa Since 2007
Joined: 01 Sep 2007
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Wed Sep 11, 2019 5:25 pm quote
I keep a small nail in my road kit that I put through the side holes as a puller just to help remove stubborn ones.
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
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Location: Staten Island, NY
Wed Sep 11, 2019 6:10 pm quote
I fold a shop rag in half, then wrap that double layered rag around the main jet and use small needle nose pliers to grip onto the main jet (making sure the pliers are gripping on the side walls, not touching the holes in any way and lightly pull it out with as little force as required.

This protects the jet from getting scratched and protects the side holes from being warped by the pliers.

Also have had some new jets come that were too loose or too tight when put into the atomizer, so I use same needle nose pliers, when mj is too tight or wont fit into atomizer at all to slightly bend the two tabs that insert into the atomizer closer together until its snug fit, but not too loose that it would fall out. When it is too loose, I use a flathead to pry the tabs apart slightly, until it fits snugly.
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PX 150
Joined: 06 Aug 2007
Posts: 302
Location: Dublin, Ohio
Thu Sep 12, 2019 1:09 am quote
Use small channel lock pliers to hold the mixer tube after taking a strip of cloth tape to line the jaws. The one I use is 6.5 inches, which is the perfect size for the job. Hold the mixer tube softly with the pliers at the narrow section of the tube, which allows the tube to butt up against the jaws of the pliers when you are pulling on the jet. I then use a narrow pick tool through the jet and it twists right off. The mixer tube doesn't have any marks on it at all. This makes removing the tightest main jet a 10 second job.

426-420x420.jpg



Last edited by apex on Thu Sep 12, 2019 6:14 am; edited 3 times in total
Enthusiast
Owned Vespa Rally 200, V90, Li150 series II...now a PX200
Joined: 26 Jun 2018
Posts: 77
Location: Fukui, Japan From San Diego
Thu Sep 12, 2019 5:21 am quote
Thank you guys for all the tips.

Is it supposed to pull straight out, or are you supposed to wiggle it out?
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Bodgerific 150 Super, 50s in progress
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Thu Sep 12, 2019 5:30 am quote
Twist, wiggle and pull.
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