Question about Vespa ET4 125 Motorcycles

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Vespa ET4 speedo not working

Speedo not working. It is attached at the bottom but I'm not sure what to look at next to solve the problem. Bike is in perfect condition and everything else on the dashboard seems to be working.

Posted by Anonymous on


6 Suggested Answers

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Posted on Jan 02, 2017

  • 10 Answers

SOURCE: 1998 gsxr 750 speedo problem

speedo pick up , is in left/hand front sprocket cover.

Posted on Mar 10, 2009

  • 86 Answers

SOURCE: Aprilia RS 125 (2004) - speedo not working

it may have snapped in the middle of the cable or check the drive in the front wheel

Posted on Aug 10, 2009

  • 16 Answers

SOURCE: vespa et4 125 cuts out after starting and riding for a few yards

before buying a new HT coil (as these are generally bullet proof on an et), remove the inspection panel and disconnect the spark cap. secure something long, thin and metal into the cap ( screw, tweezers, etc) and position it with a slight gap to the frame. disable the immobiliser and use the kick start. you should see the spark jumping from the metal to the metal frame. I fyou see this spark, it is most likely that the HT coil is fine.

Sometimes the diaphragm in the fuel tap can go wonky on an ET also, meaning that it might start alright but after going for a while, once the carb drains, the engine will die from fuel starvation. to test the fuel tap, remove the 2 tubes that run from the fuel tap to the carb at the carb end and **** lightly on the thin one. you will feel the daphragm open and fuel will run from the fatter tube if it is working.

Another thing that might happen if it is running for a while then dies is that the carb might be allowing too much fuel to the engine and flooding it. If when it restarts, there is a lot of smoke from the exhaust it could indicate this. leave it tick over for a while to run off the worst of it then increase the throttle slowly until you hit full throttle, leave it run back down to idle and you should be set to go. only use the throttle lightly and go slowly and it should bring you home at least then adjust your carb.

Posted on Aug 23, 2009

  • 67 Answers

SOURCE: speedo cable keeps braking on mojito 125 2008

you might find that the speedo drive is stiff or seized a bit so its snapping the cables ,take it off and spray it with penertration fluid and see if it releases

Posted on Oct 23, 2009

  • 4 Answers

SOURCE: speedo aint telling right speed

take ur speedo off and undo the two screws on the back off it and give it a good clean use wd40 and out back together thts it sorted

Posted on May 08, 2010

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1 Answer

Vespa et4 125 fuel starvation? Cuts out on me... Help?

Check the main jet is set up correctly. Make sure there is plenty of fuel in the float chamber, if not check the fuel line again. There should be a good amount of petrol flowing from the carb feed pipe with the fuel tap on. It should fill a pint container fairly quickly.

Apr 24, 2017 | Vespa Motorcycles

1 Answer

Where is the fuse box on a Vespa ET4

The Vespa ET4 has fuses on 3 different locations....
1) under the cover on the front shield
2) besides the battery under the seat
3) under the helmet box
under front shiel cover:
fuse-box-vespa-et4-sxbikrkt5iu1vmjxkjitshw2-5-2.jpg fuse-box-vespa-et4-sxbikrkt5iu1vmjxkjitshw2-5-9.jpg

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1 Answer

Vespa ET4 - Poor acceleration. It starts fine and ticks over well but when accelerating it really hesitates. If I back off the throttle, it will pick up slowly and has no trouble reaching top speed. I...

Hi, Paul and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Intake system air leak.
4. Vacuum piston malfunction.
5. Pinholes or torn diaphragm.
6. Accelerator pump leaking or no output.
7. Plugged bowl vent or overflow.
8. Fuel level in bowl too low.
9. Restricted fuel supply passages.
10. Plugged jets or passages.
11. Worn or damaged needle or needle jet.
12. The enrichner valve not seated or leaking.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Modern Vespa ET4 slow
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VESPA ET4 50 Workshop Manual
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Aug 02, 2013 | Vespa Motorcycles

1 Answer

Where is fuses on the et4 125

the Vespa ET4 has fuses on 3 different locations....
1) under the cover on the front shield
2) besides the battery under the seat
3) under the helmet box
fuses-et4-125-wrvo0vnsxenp22qrsalmbzkb-3-0.jpg fuses-et4-125-wrvo0vnsxenp22qrsalmbzkb-3-2.jpg fuses-et4-125-wrvo0vnsxenp22qrsalmbzkb-3-5.jpg

Oct 23, 2012 | 2005 Vespa ET4 125

1 Answer

My Vespa ET4 Clock Stopped Working, How do I fix it?

The battery that powers your scoot has nothing to do with your clock battery. The clock runs on a small round battery directly under the clock. I had to have my shop do it because you have to open up the entire top cover. Cheap fix, and having the date show is great for us oldsters!

Jun 15, 2012 | Vespa ET4 125 Motorcycles

2 Answers

Vespa et4 125 slow ? please help!!!!!

you should change the roll bearings in the variator box not only the belt! -the complete servicekit (see pic 3) 78635511-dc64-4816-8c52-cb982c0c147e.jpg 149cf14c-7282-48e4-a458-3905520aa398.jpg eef7a64f-c5b8-41bd-a471-6c0c6e860d85.jpg

May 28, 2012 | 2005 Vespa ET4 125

1 Answer

I want to install a front speedo drive on my 1970 flh harley and im not sure what drive the speedo drive when its on the axle

Your speedometer is driven by the transmission on your '70 model FLH. But, if you want to put a front wheel speedo drive on the bike, first take a look at a bike that has a front wheel speedo drive. You'll notice that the hub right where the axle goes through has a "notch" in it and the speedo drive has a "tab" that goes into the notch. As the wheel turns, the hub turns the speedo drive. This is how it works.

Now, you have two problems, One is that you need a speedo drive that has the spacer built into it so that you can eliminate a spacer on one side of the hub. Next, is the ratio of the speedo drive. The ratio of the speedo drive must match the speedo or the indicated speed will be incorrect. The speedo ratio for your FLH is probably 1:1 since it's a transmission driven speedo.

Good luck

Aug 08, 2010 | Harley Davidson FLHT Electra Glide...

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Check for bad gas -- water in gas , it is likely you have left the choke on.

Jun 02, 2009 | Peg Perego Vespa Scooter

1 Answer

Vespa et2 clock

there is only 1 fuse on an et2 and if the horn, starter and indicators work, then this iis not the problem.
It is most likely the battery which is at the back of the speedo. to get to this you need to remove the mirrors and screws from the handlebars, split the casing, disconnect the speedo cable and all electric blocks (carefully) and turn the speedo over. there is a little round plug that needs to be removed and the battery is behind it.
I think it is a rechargable battery, so replacing it with a normal battery will only work temporarily.

Mar 04, 2009 | Peg Perego Vespa Scooter

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