Change spark plug 2005 Vespa ET2 50

- the easiest way is to unmount the rear shock absorber (1 screw at the bottom) and rise the Vespa to reach the spark plug....
this is far better than to reach it from above....

some people try to access the spark-plug from under the seat..
- however the easiest way is to unmount the rear shock absorber (1 screw at the bottom) and rise the Vespa to reach the spark plug....
- this is far better than to reach it from above....
the only thing which has to be taken care of is not to lower the rear wheel too much-otherwise the spark-plug cable will be ripped out.

1) did you pull the choke (under fuel tap) ?
2) did you fill gasoline (+ 2% oil mix)?
3) if that does not help get a new spark plug
4) push-start the Vespa in 2nd gear with clutch pulled and let the clutch go after you reach a certain speed (easier downhill)

don't worry -the clunk noise is typical when changing gears on a Vespa 125 PX
- it is due to a very old fashioned construction in the gearbox (1940ies) see pictures:
you have to get used to that or change to a newer automatic type Vespa....

frankly speaking:
how come you think it is "not a problem" to do such service jobs on a Vespa LX if you are not a mechanic and don't have all the tools required?
- sure you could try it - but you need enough time to check the workshop manual and get the proper tools. (eg. sometimes the nut on the rear axle is stuck and need to be heated by a torch)
- to change the tubeless tire you will need also a tire changing machine which only tire shops or bikedealers have. https://www.yumpu.com/en/document/view/26764401/service-station-manual-vespa-lx-125-150-4t-euro-3

do you pull the choke before start?
-see picture
or change also the spark plug with a new one

check:
- is gasoline in the tank?
- is there a spark emitted at the spark plug if held to the cylinder while cranking the engine.
- is the headlight lighting up while cranking?
use a starter-spray in the air intake



Vespa 150GS VS5 spark check

Gap the plug at .028 to .031.