Echo 74520 Owners Manual v.1 - Manual (Page 17)

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1. Hold down the "S" button while turning the engine key to the "on" position until
"L" starts to flash on the LCD.
• The low setting is the RPM speed where the feed roller stops. The "up" arrow
increases the RPM setting, while the "down" arrow decreases the RPM setting.
Setting the speed lower causes the engine to lug down more before the feed
roller stops.
1. Hold the appropriate (either up or down) arrow until the desired RPM speed is
displayed.
2. Push the "S" button once with the desired RPM setting displayed to save.
NOTE: Do not choose a setting equal to or below zero.
The normal setting is the RPM speed the chipper rotor usually turns.
1. Hold the appropriate (either up or down) arrow until the desired RPM speed is
displayed.
2. Push the "S" button once with the desired RPM setting displated to save.
The high setting is not needed with this application.
1. Set to zero to deactivate.
2. Push the "S" button once with zero displayed to save.
The return setting is the RPM speed where the feed roller restarts. The feed roller
should restart before the rotor reaches "normal" RPM to maximize chipper
efficiency. Setting the speed higher allows the engine to recover more before the
feed roller restarts.
1. Hold the appropriate (either up or down) arrow until the desired RPM speed is
displayed.
2. Push the "S" button once with the desired RPM setting displayed to save.
The number of poles is used to indicate the number of speed pickup devices.
1. Hold the appropriate (either up or down) arrow until one (1) is displayed.
2. Push the "S" button one with one (1) displayed to save.
Step 1. Initiating Program Mode
Step 2. Enter Low (L=Low) RPM
Step 3. Enter Normal (N=Normal) RPM
Step 4. Enter High (H=High) RPM
Step 5. Enter Return (rEt=Return) RPM
Step 6. Enter Number of Poles (IPU=Number of Poles)
Feed Sensor Programming Instructions
Operation- Cont.