How to's for ET4 owners...
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Vespa ET4
Joined: 13 Jun 2012
Posts: 67
Location: London
Wed Jun 27, 2012 5:50 am quote
Hi all,

In my quest for knowledge i stumbled across Helium (never heard of it either) but it threw up quite a few well writen articles on ET 4 maintenance so i though i would share ...

Check Engine Oil -

Change Engine Oil -

Check Gearbox Oil -

Change Gearbox Oil -

Air Filter change -

Exhaust removal -

Fuel Tap Replacement -

Fuel Line Replacement -

Inline Fuel Filter -

Spark Plug Change -

This is one of many ways and there seems to be a lot of debate about this...i have massive hands and this was the easiest way for me - if you are more nimble of hand and have all the proper tools then maybe go for the quicker method through the front access panel! Watch yopu knuckles!

Installing a sound system -


A lot of these are quite basic but hopefully they can be helpful to someone!


Last edited by Stretch on Mon Jul 02, 2012 1:49 am; edited 4 times in total
ET4 (several)
Joined: 23 Jun 2010
Posts: 371
Location: West London, UK
Wed Jun 27, 2012 10:52 am quote
Good find, but they do seem to be for the later ET4s

E.g. if you have a "pre-leader" engine, there's a sight glass rather than a dipstick...

Joined: 29 Jul 2008
Posts: 435
Location: Lawrence, KS
Wed Jun 27, 2012 3:22 pm quote
Very cool...I've bookmarked that site.

2004 Vespa ET4 150
Joined: 24 Apr 2012
Posts: 491
Location: Seacoast, NH
Wed Jun 27, 2012 4:03 pm quote
Awesome! Thank you!
Vespa ET4
Joined: 13 Jun 2012
Posts: 67
Location: London
Thu Jun 28, 2012 7:51 am quote
Glad i could give something back!!

I will keep up the search and add anything more i find to this thread!

Vespa ET4
Joined: 13 Jun 2012
Posts: 67
Location: London
Mon Jul 02, 2012 1:47 am quote
Added Spark plug and Sound system to the list !!

Yep sound system!!
Turnkey 79
2 helmets, a jacket, 4 spark plugs, 2 rear bulbs, some bolts, a spring, an ET rear rack, clear indicators and half a can of unleaded, but no bike!
Joined: 14 Jan 2011
Posts: 3624
Location: The British Countryside - Where cows stand up when the sun's out!
Mon Jul 02, 2012 3:26 am quote
Good find stretchy!
Vespa ET4
Joined: 13 Jun 2012
Posts: 67
Location: London
Mon Jul 02, 2012 1:26 pm quote
Glad to be of service Marky
Joined: 10 Nov 2011
Posts: 566
Location: Sartell MN
Mon Jul 02, 2012 2:10 pm quote
Awesome find and Thank You!!

GTS 300 S150
Joined: 26 May 2012
Posts: 31
Location: San Diego
Mon Jul 02, 2012 6:35 pm quote
Will most or all of these "how to's" apply to a S150. Is the engine is similar or the same?
Vespa ET4 50cc
Joined: 14 Sep 2012
Posts: 25
Location: Stockholm, Sweden
Mon Sep 17, 2012 12:22 pm quote
As a vespa noob this it great!

2001 et4150 bought in july 2012 with 5300 miles for $1400
Joined: 06 Jul 2012
Posts: 244
Location: connecticut
Mon Sep 17, 2012 3:55 pm quote
very useful, thanks a lot !
2001 ET4 150 Red, 2010 GTS 300 Volcano Black, 2013 BV 350 Silver/Black
Joined: 27 Mar 2010
Posts: 273
Location: Bergen County, NJ
Tue Sep 18, 2012 6:06 am quote
very nice post, very useful, thank you!
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