Checking Engine Speeds

Warm up engine and use tachometer to check engine speeds. The following guidelines apply:

  6405 Tractors 6605 Tractors
Slow idle 875 to 925 rpm 825 to 875 rpm
Fast idle
 2480 to 2510 rpm
 2480 to 2510 rpm

 

Have adjustments carried out by your John Deere dealer.

LX1019292

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