First Serv 2018 Liberty VALVES
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Hooked
2018 LIBERTY 150S
Joined: 26 Jul 2013
Posts: 422
Location: Ohio
Thu Sep 21, 2017 7:02 am quote
Yesterday completed first service item: valve clearance check.

Scooter sat over night - engine must be stone cold.
If you waited while dealer did your valves - he didn't do them on a cold engine.

Tools I used:
Torx driver from tool kit > seat bucket & front center panel. removal
8mm T-wrench > 3 valve cover bolt
8mm 1/4" drive socket on small ratchet > the hard to reach 4th valve cover bolt
wire cutters > clip off hose clamp
.10mm feeler blade > check valve clearance
19mm socket > turn the engine to timing mark
flashlight
dab of grease > keep 0-ring in valve cover for re-install

My steps:
Chock front tire & bands on fr. brake lever - secures scooter.
I removed lower shock mount - to slightly raise front of engine. It helped get to that 4th bolt, some.


remove seat bucket and front center panel (panel lifts up and forward - tabs-in-slot) See owner's manual for photos.

cut rear clip off of breather hose from valve cover - valve cover cannot be moved away with this hose still attached back there.


remove black cover over front CVT bolt - turn engine here for timing mark


remove spark plug cap, push hoses out of way, pull off the breather hose from its rear attach point

use 8mm T-wrench to loosen 3 valve cover bolts, and 8mm 1/4" drive socket and shorty ratchet to loosen the lower/right 4th bolt. Patience here! There IS room to do this with that hard-to-reach bolt!


remove valve cover



rotate CVT nut clockwise to bring timing marks together. CHECK that there IS movement of the rocker arms once aligned. If NO movement rotate again until timing marks re-align AND you can feel movement.


check gap with .10mm feeler blade. Large blades will not work due to tight space to work. My 3 valves checked spot-on.


If your valves need adjusting - see the many utube videos on adjusting GY6 scooter valves w/screw & lock nuts.

I added a dab of bearing grease to a few points around the 0-ring grove of valve cover to keep the 0-ring in place while re-installing valve cove. Pay attention to the 0-ring seal on spark plug hole as well - keep it in place when replacing valve cover. Snug the 4 bolts slowly, in lug-nut rotation fashion (clock face - 11 / 5, then 2 / 7, etc.) Use very low torque when tightening these little bolts. I do hand snug and STOP! Personally, do not trust torque wrenches for such small fasteners.
Reattach the breather hose - use a new clip or zip tie it. It is jammed in there so tight on the tube - I didn't mess with a clip.

Replace rear shock bolt, if you undid it.

I ran the engine for a time - then checked under for oil leaks. Let it cool and felt around & under the valve cover for any sign of oil leaks. Nothing - then I replaced the panel, seat bucket.

First time into the valves on this scooter - so took a few hours working slowly and carefully. My Kymco LIKE200i is SO much easier to do the valve check. SO much more room to work than this little Piaggio. Robot does this engine OUT of the scooter ---- not at all a fair representation of the things in your way, and spaces to work.

Manual says valve check due again at 6,200 miles. I will do them every 3,000 miles, now that I'm familiar with this scooter.

O.S.

Last edited by OldSchooot on Sat May 12, 2018 1:02 pm; edited 1 time in total
Member
GTS 300
Joined: 24 Sep 2017
Posts: 45
Location: Chillicothe Ohio
Wed Nov 29, 2017 3:10 pm quote
Nice detailed post. I think I'll probably do my own also. I don't want to haul the bike to the dealer. I only have 300 miles on it right now.
Hooked
2018 LIBERTY 150S
Joined: 26 Jul 2013
Posts: 422
Location: Ohio
Wed Nov 29, 2017 7:23 pm quote
littlejimmydickens wrote:
Nice detailed post. I think I'll probably do my own also. I don't want to haul the bike to the dealer. I only have 300 miles on it right now.
Yep, I just like to do this myself if at all possible.
1,400 miles and running great.
Only issue I have is with the mirrors. Waiting on some mirror extensions to come from Asia....backwards threads are HTF items.
They are great mirrors - But I'm sooo wide with winter gear on!

Pictures of your scooter?
O.S.
Member
GTS 300
Joined: 24 Sep 2017
Posts: 45
Location: Chillicothe Ohio
Thu Nov 30, 2017 3:01 pm quote
That's a sharp bike. I haven't rode since the first cold snap. I don't have any cold weather riding gear and I have gotten bogged down at work and home getting things squared away for the winter. Can't wait for spring now.

20170812_160538.jpg

Veni, Vidi, Posti
2008 MP3 500, 2013 BV350
Joined: 13 Oct 2012
Posts: 5972
Location: Ashburn, Va. Home to the Internet
Fri Dec 15, 2017 10:58 am quote
Doesn't have to be stone cold, I was told in Susuki training 4 hours from last time it ran.
Member
liberty 150s
Joined: 17 Dec 2017
Posts: 5
Location: riverside county, ca
Sat Jun 23, 2018 8:28 am quote
thanks OldSchooot
used your post on adjusting valves for my 650 mile service. great pictures and very helpful. thanks again.
Hooked
Joined: 10 Jul 2009
Posts: 312

Thu Oct 04, 2018 8:52 am quote
Thanks for this thread. I am fancying a Liberty 150 S.

If you only had bought a Honda PCX--you would have most of the scooter's bodywork laid out in the driveway during the process.
Hooked
2018 LIBERTY 150S
Joined: 26 Jul 2013
Posts: 422
Location: Ohio
Thu Oct 04, 2018 10:12 am quote
BrendaEM wrote:
Thanks for this thread. I am fancying a Liberty 150 S.

If you only had bought a Honda PCX--you would have most of the scooter's bodywork laid out in the driveway during the process.
That's what I've been reading for the past couple of years.
Crazy.
It is why i bought the Liberty service manual, $7.99, BEFORE I bought the scooter.
I do pretty much all my own servicing.....save for tire mounting. (especially true -- now that my Piaggio/Vespa dealer folded his tent)
O.S.

Last edited by OldSchooot on Tue Oct 09, 2018 3:26 am; edited 1 time in total
Hooked
Joined: 10 Jul 2009
Posts: 312

Mon Oct 08, 2018 1:34 pm quote
File this under WTF?

This is the Honda PCX valve service routine. This should make you feel validated about your purchase. To me, it doesn't appear any more difficult than replacing an entire Vespa or Piaggio engine. The person doing it has decent mechanical ability.

How much to you think a PCX valve service would cost?

Hooked
2018 LIBERTY 150S
Joined: 26 Jul 2013
Posts: 422
Location: Ohio
Tue Oct 09, 2018 3:29 am quote
BrendaEM wrote:
File this under WTF?

This is the Honda PCX valve service routine. This should make you feel validated about your purchase. To me, it doesn't appear any more difficult than replacing an entire Vespa or Piaggio engine. The person doing it has decent mechanical ability.

How much to you think a PCX valve service would cost?

]
Also why PCX owners tell each other that the valves never really need to be checked. If they group together on this ....it magically becomes fact!
Hooked
Joined: 10 Jul 2009
Posts: 312

Tue Oct 09, 2018 9:27 pm quote
Some years ago, I almost bought a Honda PCX : O
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