MacDon M155 Unloading And Assembly Instructions page 120

Header drive engaged safety check:
2. Shut down the engine, and pull up on collar (B) while
pressing down on switch (A) to engage the header drive.
3. Try starting the engine and confirm the cab display module
(CDM) displays HEADER ENGAGED on the upper line and
DISENGAGE HEADER on the lower line.
4. If the engine turns over, the safety system requires
adjustment or repair. Refer to the windrower technical
manual for adjustment procedures.
Pintle switch safety check:
5. Shut down the engine, and remove the key.
6. Open the engine compartment hood.
7. Pry the steering interlock away from pintle arms (A) by
inserting a wedge or pry bar between one of the interlock
channels (B) and the pintle arm.
8. Insert a wooden block approximately 19 mm (3/4 in.) thick
between the opposite channel and the pintle arm so the
interlock channel is clear of the pintle arm.
9. Turn the steering wheel off-center, and move the GSL to
N-DETENT.
10. Try starting the engine and confirm the CDM flashes
CENTER STEERING accompanied by a short beep with each
flash. The engine should NOT turn over.
11. If the engine turns over, the safety system requires
adjustment or repair. Refer to the windrower technical
manual for adjustment procedures.
12. Remove the key from the ignition.
13. Remove the wooden block and close the hood.
262320
PERFORMING OPERATIONAL CHECKS
Figure 5.2: Header Drive Switch
Figure 5.3: Pintle Arms
104
B
A
B
A
Revision A