HP 5 OPERATOR’S MANUAL
6. When the engine starts, release the key and adjust engine speed for warm up (see engine
manual).
NOTE: Combines equipped with an optional Operator Presence System, will shut down the
engine after a preset number of seconds if the operator leaves the seat. The engine will continue
to run if all the above conditions are met or the operator returns to the seat before the time runs
out.
MACHINE SETTINGS AND ADJUSTMENTS
Before making any adjustment:
1. Identify the problem.
2. Find the possible causes in SECTION D TROUBLE SHOOTING.
3. Understand the possible causes and associated adjustments that can be made.
4. Choose an adjustment and follow the adjustment procedure.
WARNING!
Adjusting machine while moving parts are engaged, can cause serious injury to
operator or damage to machine. Stop machine, disengage clutch, and threshing
cylinder then, shut off engine before making adjustments.
Ground Speed
Ground speed is a critical aspect for proper harvesting. Ground speed determines how fast the
crop is harvested and delivered to the threshing chamber. If ground speed is too high the
threshing chamber will do a poor job of threshing too much material. It can cause the threshing
cylinder to become slugged or plug up the sieves. Use the ground speed control lever to adjust
ground speed. Speed adjustments are required as field conditions change, from field to field, or
from one section of the field to another. In wet conditions reduce ground speed.
Winnowing Blower
The Winnowing Blower creates air flow for the cleaning system. Both the speed and volume of air
are adjustable. Air speed is adjustable by a variable pitch sheave located on the blower shaft. To
adjust sheave:
1. Loosen setscrew holding key between one half of the pulley and the hub.
2. Remove key.
3. Rotate sheave clockwise (decrease distance between sheave halves) to decrease speed,
counter-clockwise (increase distance between halves) to increase speed.
4. Rotate sheave in half rotation increments and replace key.
5. Tighten set screw.
Adjust air volume with shutter located just behind winnowing blower on left side of the machine. If
seed is being blow out the rear of the machine close the shutter until only seed falls through air
stream, but trash is blown out the rear of the machine. If the sample is ‘dirty’ the shutter should be
opened. If the shutter is opened completely it may be necessary to increase the speed of the
blower shaft. In this case the problem is not normally due to the winnowing blower, but a problem
with the threshing cylinder and concave clearance. Try decreasing threshing cylinder speed, or
increasing cylinder / concave clearance before adjusting sheave.
C-8 OPERATION
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