I hope you had the HPDI serviced.
Oil systems are elaborate and critcial in 2 strokes, you may want to pull the oil tank, turn it over and dump it out, inspect interior bottom. Clean out any residue, repace the filter just outside the tank. Inspect oil ine.
There is a condensate drip leg tube on the oil tank under the cowl, cut the nylon tie and pull it off to inspect for water, wipe it out clean before putting it back.
If you have a remote oil fill, replace the O ring under the cap.
The VST filters, low pressure fuel pump, and water pump are other servicable items. Use Yamalube oil.
Now - the 200 HPDI is the greatest engine yamaha ever built, or will ever build in the future, IMHO.
Have fun!