Question

Knife register and cutterbar alignment are important for proper functioning of which of the following harvesting equipment ?

• A. Vertical conveyor reaper
• B. Mower
• C. Combine harvester
• D. Sugarcane harvester

Hint:

Any question mentioning cutter bar adjustments (such as lead, registration, guard alignment, or wear plates) is traditionally linked to the study of mowers in agricultural engineering.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Reciprocating cutter bars rely on exact mechanical alignment of the knife sections with guards to cut grass or crops effectively without tearing or plugging.

Step 3: Detailed Explanation:
The standard cutterbar mechanism is most fundamentally studied and maintained in a

mower.
In a mower:
1.

Knife register: Ensures the knife sections stop exactly at the center of the guards at each end of the stroke.
2.

Cutterbar alignment (lead): Ensures the outer end of the cutter bar is slightly ahead of the inner end when stationary, so it deflects back into a perfectly straight line during forward cutting.
While combine harvesters and reapers also contain cutter bar components, the mower is the primary equipment where these settings are uniquely critical.

Step 4: Final Answer:
The correct option is 2, which corresponds to Mower.