Top end rebuild instructions 49 cc scooter

a SCOOTER. year 2000. not cc (LOL)
cloned version of Honda's AF18E/AF16E Dio motor.
Air cooled, 49cc, single cylinder, 2-stroke
Compression Ratio: 7.2:1

it's in the manual. RTM" service manual

there is computer model to calc, this using compression ratio and cylinder volume
but
here is generic list.
my lawn mower is 100psi;. (and mopeds and outboard tiny motors and scooters tiny not 250cc hog scooters)
my old car is 150psi
my newer car with high 10:1 CR , is 200psi
a 49cc engine 7.2 CR is like 80psi.
low and expected. at that CR, 100 max
to get the reading correctly
good guage
fast cranked (kicked or starter turned)
let the meter peak and peak is spec. read peak PSI
and the CR is what matters.
and only on a warm engine, warm/hot not cold
cold is way less.
when warm the rings seat, cold they do not.(well)

If you have replaced the spark plug then the possibilities are the ignition coil is weak or the starter mechanism is faulty.

See this site for details of parts.
Mini Atv Quad Parts 47cc 49cc Stock Replacement

What about it?

My 49cc 2 stroke pull start scooter wont turn over

Move the rear axle rearward.

I mix mine 50 to 1

Resistance in the assembly

Hi patandsheri...
Your problem could be numerous and none of them good.
1...Broken crankshaft
2...Broken connecting rod
3...Blown Head Gasket
4...Broken or stuck intake or exaust valve, also could have lost the lock pieces to hold them in place.
5. Broken timing chain or gear
6. Hole in head or hole in engine
Please take time to rate me

some times its better to get new forks, as they can be stressed when straightening them, you dont need them snapping off while your riding

yes clean it with carb cleaner, take it off and take it all apart, every last piece and put it back together, it'll have trouble starting the first few pull but itll go