MAINTENANCE AND SERVICING
5.6.5 Adjusti
ng Tension on Gearbox Drive Chain
The chain inside the gearbox has been tensioned at the factory and requires no maintenance, other than to adjust
the tension every 500 hours or annually. To adjust chain tension, follow these steps:
DANGER
To avoid bodily injury or death from unexpected start-up of machine, always stop engine and remove key
from ignition before leaving operator ’s seat for any reason.
1. Lower header, stop engine, and remove key.
2. Remove two bolts and chain adjusting cover (A). Be
sure gask et (B) is not damage d.
3. Remove retainer plate (C).
4. Tighten bolt (D) to 60 in·lbf (6.8 N·m), Then back off
bolt 1-2/3 turns.
5. Reinstall retainer plate (C).
6. Reinstall chain adjusting cover (A) and gasket (B).
Torque hardware to 84 in·lbf (9.5 N·m).
Figure 5.47: Chain Tensioner
147695 284 Revision A
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