vacuum leak
 

how do I check for a leak.

Spray starting fluid around where you suspect there is a leak. If the engine speed changes, you have a leak.

I can't get the bike started though. If the cvt belt is off it will work normal???❓

No. Without the bike running, it's not producing vacuum, so there is no way to check.


Don't run the bike without a cvt belt the cvt acts as a counter balance for the engine. Running an engine with no cvt can damage the bearings and other engine components.

Testing for a vacuum leak can be done with the engine off, but requires a piece of equipment called a "smoke machine" which is outside the tool set most scooter owners would have.

As to running an engine w/o a cvt belt; IF the only item on the crank on the cvt side is the starter gear, fan and retainer then it will do no harm to the engine as that is the same a testing an engine on a stand. However IF you have the engine variator components installed and do that, yes damage will be a result.

You mean like the variator and the dollars?