Tech Tips

Check the following items for tips on, well, whatever we are asked about and have time to list. (For general info, see the links page.)

Recommended upgrades:

  1. Our Top 10 Lambretta upgrades.
  2. Our Top 10 Vespa upgrades.

Fuel/exhaust system:

  1. What carburetor to upgrade to on your Lambretta?
  2. What carburetor to upgrade to on your Vespa?
  3. Modern Keihin PWK/Mikuni carbs:
    1. How to tune Keihin/Mikuni carbs, including a PWK needle chart
    2. See the PWK jetting details others have used.
    3. Add your PWK jetting details to the infobase to help others.
    4. Exploded PWK diagram
    5. PWK carb float tips
    6. What the difference between roundslide, flatslide, and D-slide (PWK) carbs?
    7. PWK carbs versus Dell'Orto carbs. Who wins according to Scootering
  4. Adjust a Vespa Dell'Orto carb
  5. Official manual for Mikuni VM carbs
  6. How the weather affects carb tuning
  7. Do a plug chop to check your jetting
  8. Clean a rusty gas tank

Dyno charts:

I have one of your exhausts in the stainless version on my tuned Vespa, Malossi 210, cut crank, ported and polished, Cosa clutch, all running off the standard 24mm carb. These are the dyno results I obtained using your exhaust, maybe you will find them useful and can use them on your site, etc., to show the results you can get from one of these pipes as they are great value for money and perform very well and still give the motor lots of torque.
  1. Dyno results with a scootRS Lambretta tuned exhaust, Mugello 225, and 30mm PWK carb.
  2. Dyno results with a scootRS Lambretta tuned exhaust, 200cc, and PWK carb.
  3. Dyno results with a scootRS Lambretta tuned exhaust, Mugello 186 (v.1 only), and 28mm carb.
  4. Dyno results with a scootRS Vespa 150 tuned exhaust and M-class/LML 5-port engine.
  5. Dyno results with a scootRS Vespa 200 tuned exhaust and Malossi 210 and torque (Malossi 210, cut crank, ported and polished, cosa clutch, standard 24 mm carb).

Electrical:

  1. Wire up our Lambretta 12 volt stator
  2. Choose your sparkplug
  3. What you sparkplug should look like: here or here
  4. Should you use a resistor sparkplug or not?
  5. Quickly test if your condenser is OK

Cable/controls:

  1. Adjust the cables and selector box on your Vespa when it is jumping out of gear. (Or change the cruciform if that's not it.)

Suspension:

  1. Lambretta front end dive, buffers, and fork links and the removal/re-assembly of parts

General:

  1. Download official parts books and user manuals.
  2. Download a flowchart of faults to help you determine the possible cause of a problem with your scooter. (Vespa, but most is the same on a Lambretta.)
  3. Break-in a new two-stroke motor
  4. Lock your scooter so it isn't stolen
  5. What tools should I have for working on my Vespa?
  6. Where is my Lambretta or Vespa serial number located?
  7. Check what models are similar so you can order parts correctly

Websites:

  1. ScooterHelp.com
  2. Vespa Maintenance