New Holland 499 Operator's Manual page 67

WARNING
Disengage the PTO, turn off the tractor engine
and remove the key. Wait for all movement to
stop before leaving the operator's position.
Never adjust, lubricate, clean or unplug machine
with the engine running. Failure to comply could
result in death or serious injury.
IMPORTANT: Check the adjustment of all belts and
chains after the first five hours of operation and then
after every 50 hours' use.
REEL DRIVE BELT
1. Reel drive belt
2. Idler spring
3. Eyebolt, two 3/8" hex nuts
4. Reel vari-drive sheave
5. Flat idle
1. V-idler
2. Stop
3. Flat idler arm
4. Reel pulley
IMPORTANT: Reel belt tension must be readjusted
after the reel speed or reel position is changed.
The reel drive belt must be tight enough to keep the
reel turning at a steady speed in heavy crops. The
belt must be loose enough to slip and protect the reel
from damage by large rocks, tree limbs, or big wads
of hay.
SECTION 4 - MAINTENANCE
BELTS AND CHAINS
10004722
4
10004723
4-7
2
3
1
2
5
4
2
1
3
3