YP-425, 625, 825, & 1025-A3P
Adjustments
47
2018-07-23
401-652M
3. Rate: Range Sprockets
Range sprockets provide coarse control of seed rate.
Refer to Figure 36 and Figure 37
All Seed Rate charts specify a DRIVING and DRIVEN
sprocket combination for the Range. Crops with more
than one range are noted as “LOW RANGE” or “HIGH
RANGE” at the top of the chart.
To change Range:
a.
Loosen the bolt securing the idler plate
.
Disengage the idler.
Remove the chain.
b.
Remove pins from shaft ends at DRIVING and
DRIVEN sprockets, as well as at storage shaft
at
left end of frame.
c.
Exchange sprockets so that new DRIVING and
DRIVEN sprocket tooth counts (stamped on sprocket
face) match chart. Re-pin all shafts.
d.
Remount chain (see page 88). Re-engage idlers for
1
/
4
inch (6.4 mm) slack in longest chain span.
4. Rate: Transmission Sprockets
Transmission sprockets provide fine control of seed rate.
Each chart row provides a rate adjustment of 2 to 3%.
Each Seed Rate chart row has a unique pairing of
DRIVING and DRIVEN Transmission sprocket.
To change Transmission:
a.
Loosen the bolt securing the idler plate
.
Disengage the idler.
Remove the chain.
b.
Remove pins from shaft ends at DRIVING and
DRIVEN sprockets, as well as at storage shaft
at
left end of frame.
c.
Exchange sprockets so that new DRIVING and
DRIVEN sprocket tooth counts (stamped on sprocket
face) match chart. Re-pin all shafts.
d.
Remount chain (see page 88). Re-engage idlers for
1
/
4
inch (6.4 mm) slack in longest chain span.
Figure 35
Range Sprockets
31030
3
DRIVING
DRIVEN
Figure 36
Transmission Sprockets
31030
4
1
DRIVING
DRIVEN
Содержание YP-425
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