My favorite scooter mechanic on KZfaq. Thank you for your videos. 👍

Unbolting the rear shock makes it possible to get the valve cover out. Otherwise, I couldn’t get it out. My biggest problems with the valve check was being able to refit the valve cover and keeping the o-ring/seal in place. It fell out every time. I used a small amount of tacky grease to hold the o-ring in place. Find feeler gauges like the ones robot is using. The standard feeler gauges are hard to use. I did the two intakes from the top reaching down as opposed to using the access panel. Two of my 3 valves were tight.

Thanks. I haven't seen much about these new motors. @bigissue, these engines do not have hydraulic self-adjusting valvetrains. Valves--especially the exhaust valves get longer during use, reducing their clearance and then they won't seal well. If the valves don't seal against the seat because the valve-train is holding it open, the valve and seat will get hotter than they need to, which further accelerates their stretching and seat wear. During that time, the engine just won't have as much power as it should because the engine can't keep compression after the sparkplug ignites the fuel-air mixture. I've heard from a Vespa mechanic of an engine that would not start from valve-clearance issues alone, likely because modern Vespas, already have an engine-decompression system to reduce the load on the starter, and having leaking valves might lower it until the point where it wouldn't start at all.

Great video!! I was wondering if it is the same way of adjusting the valves for a 4 valve engine? (I have a 4 valve SOHC Piaggio engine for my Aprilia Atlantic 2007)

This engine is also on the 2012-2014 Vespa Lx 125/150 3 Valvole i.e. here in Europe. I have one in Portovenere green :)

got a problem with a primavera 50 (carburation and 4stroke)... it starts, revs up itself and inmediatly after 10 secs stop. Then if you let it rest 2 min it will start again with no problem and stop again......any thoughts?? carburetor , valve adjustment, air leak.......???

Hi Robot, how you adjust the valves when there is a king of ball joint on the end (have a ET4 with this arrangements)

Good day. Hello to you from faraway Kazakhstan. If it is not difficult to tell me please. I have a Piaggio ZIP engine 125 carburetor. I want to install it on the Vespa LH 50 2t scooter. Which sdi switch is suitable for starting this engine ????. In addition to the ACI503. I will not have an immobolizer. Thanks for answering.

Where can i get some cheap new intake valves for 2020 liberty 150 ?

I womder if this is the same for the IGet engines?

Great video ! Tks you

I have a 125cc iget 2021 3v engine. Is the method the same for finding TDC?

How can I get a service manual for VXL150 3V?

Quick question, the owners manual says both I take and exhaust should be 0.8

why is it according to the manual it's both .08 mm for both intake and exhaust? and robot uses .004 for the intake and .006 for the exhaust. I'm a little confuse.

Hopefully, I can ask a question here? I take delivery next week of a new Primavera. As I live 200 miles from the dealer (and 150 miles from the nearest Vespa dealer). I can change the engine oil and filter myself as well as the gear oil, but adjusting the valves is well beyond my skill set. As the valves on the engine shown here were slightly tight with just a few miles, my questions are these? Are they tight from the factory or do they tighten up with initial use? Is there any point in having the dealer check the clearances on the brand new engine before they ship it to me? If not, will I need to transport my new scooter to an authorized dealer to have them checked at 625 miles? Thanks much.

I just paid 300 dollars for this service! Lol I should have watched this video before hand and done it myself! Next time!!!

In 0.14 ex0.16?

hello mr robot,i just take back my primavera 3v from a workshop that lies to me..n when i check the head cover i realize i lost 1 part bcoz i see in ur video u have it there..what u call it crank lock or what..im sorry bcoz im new ...is it ok i didnt hve it there?

Om kuku nya item bgt ? Sama jambang ga pernah di cukur ?

hello I need 2005 piaggio fly 150 scooter carburetor setup and hose connection picture information .... Thanks

good job

Also applies to 2013 Vespa LX 150 3V.

how to change Sora tongue vespa?

loss power after valve adjustment, setting was .10mm and .15mm @top dead center, still no power, before adjustment - power is very good? what makes a problem? pls help. thank you

Are the valve clearances the same spec on the older engine (2009 Fly 150)? Thanks! All of your videos are great BTW. You guys are awesome!

Hi iam from india ,pl upload vespa Geared 150 4t engine complete overhaul

do you have a connecting rod for the vespa sprint1503vie

Mi moto tiene ese motor pero a perdido fuerza puede ser un ajuste de válvulas ya tiene 12345klm y nunca se a echo

the valve adjusment? intake 0,04 exhaust 0,06???

full enjan ripering dikhao

Is Robot drunk?

Hi

I probably bored up to 200cc

hey people valve adjusment on first service are vespa crazy get a 300 gts had it since 2009 change the oils new exhaust tyres engie mounts and tighting steering bearings all cheap to do and still going after 40000kms forget this engine