Cub Cadet Cub Cadet CC30H 30" 10.5 HP Briggs & Stratton Compact Riding Mower MECH-UNEVEN-CUT Error Fix: Uneven Cutting Height — Scalping, Streaks, or Missed Areas

Error code MECH-UNEVEN-CUT on the Cub Cadet Cub Cadet CC30H 30" 10.5 HP Briggs & Stratton Compact Riding Mower means: Uneven Cutting Height — Scalping, Streaks, or Missed Areas. The mower produces an uneven cut with visible height differences across the mowing path. Causes: (1) DECK NOT LEVEL — the deck must be leveled side-to-side and front-to-back. Use the deck adjustment procedure: measure blade tip height at four corners and adjust the deck links/hangers until level. The front should be 1/8" to 1/4" lower than the rear. (2) DULL OR DAMAGED BLADE — dull blades tear grass unevenly. Sharpen or replace every 25 hours. (3) UNEVEN TIRE PRESSURE — all four tires must be at the same PSI (check sidewall, typically 10-14 PSI). Even 2 PSI difference tilts the deck. (4) BENT BLADE — check by rotating each blade. If it wobbles, it is bent. Replace. (5) WORN SPINDLE BEARING — a failing bearing allows the blade to wobble, causing uneven cutting. (6) CLOGGED DECK — grass buildup under the deck reduces airflow and blade efficiency. Scrape clean. (7) Anti-scalp wheels — the XT1 and XT2 have anti-scalp wheels on the deck. If they are worn, set too high, or missing, the deck dips into low spots. Adjust or replace.

The most successful fix is "Replace Bent or Dull Blades and Inspect Spindle Bearings" (medium difficulty, ~60 minutes). Estimated DIY cost: $20-$40. HomeMD has 2 community-ranked fixes for this error.

This error is rated low severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Yes — the top-ranked community fix ("Replace Bent or Dull Blades and Inspect Spindle Bearings") is rated medium difficulty and takes about 60 minutes. Tools needed: 15/16" socket wrench, Torque wrench, Jack stands, Bearing puller.

DIY cost: $20-$40. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

The Cub Cadet Cub Cadet CC30H 30" 10.5 HP Briggs & Stratton Compact Riding Mower has 8 other known error codes, including: MECH-BATTERY-CHARGE (Battery Will Not Charge or Drains Between Uses), MECH-BELT-WEAR (Deck or Drive Belt Premature Wear or Breakage), MECH-ELECTRICAL (Blown Fuse or Complete Electrical Failure), MECH-FLAT-TIRE (Flat Tire or Tire Will Not Hold Air), MECH-OIL-LEAK (Engine Oil Leak), and 3 more.

Error code MECH-UNEVEN-CUT also appears on 4 other Cub Cadet models: Cub Cadet XT1 LT42 IntelliPOWER 547cc 42" Riding Lawn Tractor, Cub Cadet ZT1 42 Ultima Series 21.5 HP Kawasaki FR 42" Zero-Turn Mower, Cub Cadet ZT1 50 Ultima Series 23 HP Kawasaki 50" Zero-Turn Mower, Cub Cadet ZT2 54 Ultima Series 23 HP Kawasaki 54" Zero-Turn Mower. The fix may vary by model, so check each model's specific page for tailored repair steps.