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Possibly cdi/immobilizer fault, it's sounds as if gone in to a default running?
Keep the std set up, the latest front end was designed to stop the shock from wearing itself out.
You could fit a new oil pump, it's not difficult.
I started the twin up a couple of months ago! That's about it.
Have a look at the other Aprilia thread!
I'm not a fan of rev counters when setting roller weights, you'll know when it feel's right, open the throttle wide open from standstill and it...
I was 8 in 1973!
Use the heaviest rollers it will run nicely at without it bogging, falling out it's "power band" , it's like slipping/dropping the clutch on a car...
This is my pump shaft/seal extractor. First pic is the std slide hammer then bit that slides over the pump shaft and bolts on, the 4th n 5th pic...
The slide hammer has a thread on the end, I welded a 8mm long socket to nut to fit S/H. The 8mm socket has a hole at the end with a small bolt...
A new Cam chain/oil pump would be a good idea plus usual oil filter/5w-40 oil.
Variator yes, clutch shoes, springs yes but not the rear clutch drive.
If I remember right, there's a water way core plug that sit's under the camshaft, I had a DNA with similar symptoms, might be worth having a look...
A 172 runner/typhoon disc engine? then no, only original or dragster wheel.
This is a 2t runner were talking about? It won't have an immobilizer.
If it's 3 bolt then should be metal drive, Mc2 13" wheel would fit with no mods, only problem is Mc2 wheels are hard to find in the UK, you should...
Mc3 wheel should fit straight on the back, depend's on what speedo drive is on the front? plastic or metal type? Mc3 or earlier Mc2 3 bolt disc wheel?
Fairy liquid works for me, just a tiny drop on kitchen roll and rub on the inside of visor until nearly dry!
Sold.
Check valve clearance, a tight tappet can cause low compression due to the valve being open slightly.
