⚡ Quick Answer

Some noise is normal

Grinding or metal-on-metal = STOP immediately

Adjust beater height to fix most issues

✅ Normal Sounds (Safe):

• Low humming: Motor running
• Gentle whirring: Gears turning
• Light clicking (speed changes): Speed adjustment mechanism

Action: None needed—this is normal operation

❌ Dangerous Sounds (Take Action):

• Grinding/scraping: Metal-on-metal contact ⚠️
• Loud clicking: Gear damage
• High-pitched squealing: Belt or bearing issue
• Rattling (while running): Loose parts

Action: Stop mixer immediately, investigate

Sound: Scraping, clicking on every rotation

Cause: Beater clearance too low (beater hits bowl bottom)

Fix:Now, Adjust beater height

1. Locate adjustment screw (inside attachment hub)
2. Turn clockwise 1/4 turn (raises beater)
3. Test with business card (should just barely fit)
4. Repeat until clearance correct

This fixes 60% of noise complaints! ✅

Cause: Worn gears, usually from overloading or wrong speed

Fix: Needs professional repair/gear replacement

Cost: $100-200

Prevention: Always use speed 2 for heavy doughs

Cause: Bowl not locked properly or loose attachment

Fix:

• Ensure bowl fully locked
• Check attachment hub screw tightness
• Verify mixer on stable surface

Cause: Bearing wear or lack of lubrication

Fix: Needs professional service

Don’t ignore: Can lead to motor failure

Start here:

Well, q: Does beater scrape bowl?

→ YES: Adjust beater height (fixes 60% of problems)

→ NO: Continue

Q: Is it grinding/metal-on-metal?

→ YES: Stop using, get professional repair

→ NO: Continue

Q: Is it just louder than before?

→ YES: Normal aging, monitor but usually OK

🎯 Key Takeaway

First, adjust beater height—this solves most noise issues. If grinding persists after adjustment, stop using and get professional service. So, light humming and whirring are completely normal.