Controls must move freely and without resistance. Mechanical or electronic control problems can mimic transmission failure.

• Inspect cable movement: Shift levers or electronic actuators should move the clutch valve lever fully into forward, neutral, and reverse.
• Lubricate mechanical linkages: Use marine grease.
• Inspect the detent mechanism: Ensure the clutch lever stays positively in gear.
• For electronic controls (like Twin Disc EC300): Run diagnostics through the control system to confirm proper shifting.
• Check for worn bushings or misalignment in the mechanical control brackets.
  

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Incorrect lever adjustment can prevent full clutch engagement and cause slippage.

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