An operator is informed that a telehandler has recently undergone a major modification by adding a custom-designed fork attachment. According to CSA B335, what is required before this modified telehandler can be returned to service?

Question: An operator is informed that a telehandler has recently undergone a major modification by adding a custom-designed fork attachment. According to CSA B335, what is required before this modified telehandler can be returned to service?

Answer options:

• The operator must be specially trained on the new attachment by the manufacturer's representative. ✅ The modification must be approved in writing by the original equipment manufacturer (OEM) or a professional engineer.
• The telehandler's load chart must be informally updated by the site supervisor.
• A trial run with a light load must be conducted to assess stability and performance.

Correct answer: The modification must be approved in writing by the original equipment manufacturer (OEM) or a professional engineer.

Explanation: CSA B335 strictly requires that any major modification or addition that affects the capacity or safe operation of a lift truck must be approved in writing by the OEM or a professional engineer. This ensures the design integrity and safe operation are maintained after the change. Operator training and trial runs are important but secondary to the engineering approval.