Check Engine Speeds
Warm up engine and use tachometer to check engine speeds. The following guidelines apply:
| Tractors |
Slow idle |
Fast idle |
| 6510-6610 |
| - mech. injection pump |
850-950 rpm |
2460-2510 rpm |
| - electr. injection pump |
840-860 rpm |
2450-2480 rpm |
| 6810-6910S |
| - mech. injection pump |
850-950 rpm |
2250-2300 rpm |
| - electr. injection pump |
840-860 rpm |
2240-2270 rpm |
Have adjustments carried out by your John Deere dealer.
NOTE:
On tractors with electronic injection pump, slow idle remains at a higher speed (up to 1060 rpm) until coolant temperature rises to 20°C (68°F).
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