How to adjust the air mixture scre on px200 disk?
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Enthusiast
Owned Vespa Rally 200, V90, Li150 series II...now a PX200
Joined: 26 Jun 2018
Posts: 70
Location: Fukui, Japan From San Diego
Fri Jul 05, 2019 8:40 pm quote
When my bike is at idle and I blip it, it bogs a little, so I'm thinking I need to adjust my air mixture screw? It runs fine otherwise.

It's the type that sticks out and you adjust it with a 7mm wrench.
The thing is I can't reach the screw because the starter motor is in the way. Any special tools to get in there?

IMG_4763.JPG

Hooked
1963 Allstate, 2005 Vespa PX150, 2001 Harley 95 ci Dyna
Joined: 06 May 2016
Posts: 230
Location: Central Ohio
Sat Jul 06, 2019 11:02 am quote
I had the same problem with my 2005 PX150. I bought a pair of 11 inch pliers with the tip bent at 45 degrees. This tool works fine.

https://www.homedepot.com/p/TEKTON-11-in-Long-Reach-45-Degree-Bent-Nose-Pliers-34404/206200670

I had the same off-idle bog and turning my idle mixture screw counterclockwise just a half turn solved the problem.
Ossessionato
PX200, Moto Guzzi V7 Cafe Classic
Joined: 22 Nov 2011
Posts: 2101
Location: Sydney, Australia
Sat Jul 06, 2019 1:09 pm quote
Seen pictures on here of spanners bent at an angle to get in there. Probably stuck in a vice, heated and bent over.
Molto Verboso
2005 PX150 In a Love-Hate Relationship with a 2-Stroke Vespa Since 2007
Joined: 01 Sep 2007
Posts: 1804

Sat Jul 06, 2019 10:44 pm quote
Lots of options, been discussed lots of times.

Here's one idea, use search for others.

Wrench.jpg

Enthusiast
Owned Vespa Rally 200, V90, Li150 series II...now a PX200
Joined: 26 Jun 2018
Posts: 70
Location: Fukui, Japan From San Diego
Sat Jul 06, 2019 11:41 pm quote
pdxjim wrote:
Lots of options, been discussed lots of times.

Here's one idea, use search for others.
I always use the search function first. With all things vespa, things change. I thought maybe after a while someone would have come up with a proper tool.

Thanks for the help and picture though
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