MacDon R85 Rotary Disc 13 Foot - Manual (Page 101)

MAINTENANCE AND SERVICING
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Revision C
7.6.5 Conditioner Drive Belt
The conditioner drive belt (A) is located inside the
drive compartment at the left hand side of the
header, and is tensioned with a spring tensioner.
The tension is factory set, so should not require
adjusting.
Check the belt tension, and inspect for damage or
wear every 100 hours or annually (preferably
before the start of the cutting season).
DANGER
Stop engine, and remove key from ignition
before leaving Operator's seat for any reason.
A child or even a pet could engage an idling
machine.
a. Lower header to ground, turn off engine, and
remove key.
b. Open the driveshield. See Section 6.2.2
Driveshield.
c. Check that adjuster nuts (B) and (C) are tight.
d. When properly tensioned, tensioner spring should
measure approximately 5-9/16 to 5-15/16 in.
(141–151 mm) in length.
e. If necessary, adjust tension as follows:
1. Loosen jam nut (C).
2. Turn nut (B):
 CLOCKWISE to increase spring length
(tension), or
 COUNTERCLOCKWISE to decrease
length (loosen).
3. Tighten jam nut (C).
f. Close driveshield.
B
A
C
5-9/16 to 5-15/16 in.
(141–151 mm)