Kubota B2650, Operator'S Manual, Page: 41 / 112

21 OPERATING THE ENGINE
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Tips on DPF Regeneration
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Operation
The higher in speed or load the engine operates, the
higher the exhaust temperature rises. As a result,
particulate matter (PM) inside the DPF is consumed,
therefore the regeneration process occurs less
frequently over time.
The lower in speed or load the engine operates, the
lower the exhaust temperature. Accordingly, less
particulate matter (PM) inside the DPF is consumed,
therefore more accumulation of PM will occur, which
requires frequent regeneration, therefore avoid
prolonged idling if possible.
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Necessary conditions for "Regeneration"
If even one condition is deviated, after starting
regeneration, the regeneration will be interrupted.
(1) The engine coolant temperature
(2) The DPF temperature
(3) The battery voltage during regeneration
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Usually it takes 25-35 minutes to complete the
regeneration cycle.
Actual regeneration time may depend on ambient
temperature, exhaust temperature and engine speed.
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It is recommended to do the regenerating while the
engine is warm and at high revolution.
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Do not unnecessarily start and interrupt the
regeneration process. Otherwise, a small amount of
fuel becomes smoke.
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Just after the regeneration has ended, the DPF muffler
remains hot. It is advisable to keep the engine running
for about 5 minutes to allow cooling of the exhaust
components.
STARTING THE ENGINE
1. To set the parking brake:
(1) Interlock the brake pedals.
(2) Depress the brake pedals.
(3) Latch the brake pedals with the parking brake
lever.
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When the parking brake is set while the key switch is
"ON", the parking brake warning indicator light on the
easy checker (TM) will turn on.
2. To release the parking brake, depress the brake
pedals again.
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It is recommended that the operator practice engaging
and disengaging the parking brake on a flat surface
without the engine running before operating the tractor
for the first time.
1. Make sure the parking brake is set .
(1) Parking brake lever (A) Interlock the brake pedals
(B) "DEPRESS"
(C) "PULL DOWN"
(1) Parking brake warning indicator [B3350/B3350SU only]