Small Engine Troubleshooting Problems? Ask a Mechanic Now.
How did problem develop? Have you removed the speed limiter wire for test?
Black wire from the CDI unit.
Has carburetor main needle been removed?
It has snap ring that changes the main jet fuel volume.
The speed limiter wire can affect the ignition circuit. CDI is capacitor discharge ignition, it fires the coil at the right time.
HAYNES makes a Polaris service manual, well worth the price. Ebay has them.