Modern Vespa

that is the piaggio recommendation on mileage for the checks. I have done mine at 8k and every 8k now. I have noted they do get tighter by a couple thou. so instead of prolonging to the 12k and risk even more tightening I will keep doing mine at 8k. I also adjust them now a loose.06mm knowing they tighten a bit.

I see nothing in this thread about worn belt and rollers/sliders, wouldn't this be a factor in performance/gas mileage?

Don't forget tire pressure. If you let it get low the gas mileage drops.

I've only got about 5200 miles on the bike, so the belt and rollers really should not be an issue at all.

And actually, my tires were getting low (checked and filled them before a long ride on Monday) and my gas mileage had not changed in any appreciable manner since they were last checked and filled to the desired level.

Your higher rpms on the freeway is what is hurting your mpg. I run 65 mph on the freeway @5,500 rpm and get 60-65 mpg.

[quote="norCal Randy"] Your higher rpms on the freeway is what is hurting your mpg. I run 65 mph on the freeway @5,500 rpm and get 60-65 mpg on the 400.

[quote="norCal Randy"] Yep! Well, and the large comfort windscreen...

I don't have too much choice on the freeway. That's what I have to do to keep up with the flow of traffic. Oh, and it's fun!

I was just posting to give the OP a frame of reference.

Cheers!

John

Yep, I'm right there with ya'

Mine's stock rollers and no fuzzy washer, and runs 6000 RPM @ 65MPH real speed on a level stretch. My mileage in that situation is BETTER than my street mileage, as my MPG went up by several MPG for the few weeks I had to do multiple freeway runs.