From the first checks to major service. Every interval opens a working checklist.
K2892-7121-3 operator manual, original BX23S. North American fluid guidance; normal mineral-diesel schedule. Biodiesel and severe conditions need additional or shorter intervals.
Check the manual and machine versionEvery 2,000 hours or 2 years, whichever comes first: Flush cooling system and replace coolant.
Every 4 years: Have scheduled radiator, steering, fuel, intake and breather hoses replaced. Hose part numbers depend on serial and configuration; obtain a dealer list.
Read every task and calendar deadlineHours and calendar time run independently. Use the earlier deadline and read the conditions for each task.
Daily / before use
Use the complete daily-check procedures in the manual.
Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 119–124Every 200 hours
Every 200 hours
Inspect fluid level and replenish as needed; full reservoir volume is not a filter-only purchase quantity.
Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 113–114First 50 hours only
Every 50 hours
Loader and backhoe have additional grease points and intervals.
Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 113–114Every 100 hours or 1 year, whichever comes first
Every 100 hours
Clean more often in dust; cleaning is not replacement.
Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 113–114Every 100 hours
Every 200 hours
Every 400 hours
Every 400 hours
Every 400 hours
Every 400 hours
Quantity two is supported by dealer kit evidence. Biodiesel guidance shortens fuel service; this is the normal-diesel schedule.
Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 113–114Every 800 hours
Every 1,000 hours or 1 year, whichever comes first
Every 1,500 hours
Every 2,000 hours or 2 years, whichever comes first
Every 3,000 hours
Every 1 year
Replace deteriorated components sooner than scheduled.
Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 113–114Every 4 years
Hose part numbers depend on serial and configuration; obtain a dealer list.
Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 113–114As needed
At a numbered milestone, include recurring tasks whose intervals divide evenly into that hour reading. For example, 400 hours includes the 200-hour tasks. First 50-hour work is separate from repeating 50-hour work.
Time limits run independently of the hour meter. A 12-month or 200-hour limit means whichever comes first. This is a milestone planner, not an overdue-service calculation: it does not know your last service.
Dust, prolonged low-speed use and fuel selection may shorten intervals. For B6–B20 biodiesel, the manual specifies more frequent fuel-filter attention; use its biodiesel section (pp. 117–118).
Source: BX23S / LA340 / BT603 operator manual K2892-7121-3 · pp. 113–114