MacDon R85 Operator's Manual page 157

1. Lower header to ground, turn off engine, and
remove key.
2. Open the driveshield. Refer to
26.
3. Check that adjuster nuts (A) and (B) are tight.
4. When properly tensioned,
should measure approximately 5-9/16 to 5-15/16 in.
(141–151 mm) in length.
169455
MAINTENANCE AND SERVICING
5.4 Driveshields, page
tensioner spring (A)
147
Figure 7.67: Driveshield
Figure 7.68: Conditioner Drive Belts
Figure 7.69: Conditioner Drive Belts
Revision F