Modern Vespa

So—-I swapped my auto lube scoot to pre mix.

Apparently I'm supposed to blank the hole in the case where the metering shaft drops into.

Fine. I did that. Now the autolube carb box doesn't sit flush on the engine case bc of a sleeve that slipped into the hole that I plugged.

So now what do I do? Do I have to grind off that sleeve?

Sh$t——i should have just kept the auto lube.

Any suggestion on what I should do?

No need to worry.

You're "supposed" to swap to a non-autolube airbox at the same time.

I've also just removed the gear and not worried about the blanking plate. That sleeve will keep the oil in the crank case.

All Good!

So I plugged that hole for nothing.
I could have easily removed the gear vs plugging the hole and now having to buy a bunch more parts to accomodate.

Thanks for the suggestions.

Hit it from the inside and it will come out. It's just a sleeve…

Remove the small gear next to the clutch. Leave the tall pump shaft in the cases and use the existing air box. The tall pump shaft combined with a good gasket and the air box should keep any gear oil from splashing up. Bonus points if you want to fill the oil channel on the bottom of the air box with RTV to help with air leaks.

Dumb question - why not keep the auto-lube? I always thought it was a plus on the scoots, maybe I'm wrong.

I knocked out the sleeve. Installed as normal. The universe is back in order for now. Crisis averted.

Thanks for all your help.

Long story short——I was a noob and wanted reliability. Wanted the bike to be solid.

Took out the auto lube to ensure that I have 2% mixture at all time under my own control.

After all this—-I should have kept it.

Live and learn.

But pre mixing at gas stations is always fun.

That autolube system is super reliable! I've never seen it fail.

I have. Got the seize marks to prove it, too.

Funny, I don't completely trust it either, looking at my first scooter that's ever had one.

Where did it fail?

Seems like the only potential failure points are debris, oil getting old and clogging it up, or maybe mixing two types of oil that have a bad reaction.

The mechanical parts could, but they're pretty solid and don't get much stress.

Pretty sure I just filled up the channel with some form of silicone... ohh, and removed the gears.

Thanks to some responses on this forum I managed to deal with my situation.

I knocked out the sleeve and now the bike is running well.

Being my first build, I figured I would take out the auto lube. So many problems follows afterward bc I didn't complete the task properly.

Now I feel like I'm seasoned. Lol. Next time around, I'll be more prepared for possible situations.

Cheers everyone

The autolube is superior to premix.

It adjusts the oil metering rate with throttle position and, critally, rpms

Premix does not do that.

It's a brilliant design. But it's fine - premix worked for decades and still works now. Wouldn't bother going back. But save the parts. Someone can use them.

P.s. - note that the premix version of the p2 was jetted 118 instead of 116 to adjust for viscosity. So don't forget a small upjet