Yanmar 3TNV Series Service Manual page 36

(4) Perform maintenance without fail.
Note: Inspections to be carried out by the user and by the maker are divided and set down in the "List
of Periodic Inspections" and should be checked carefully.
(5) Maintenance period and Quality guarantee period for exhaust emission related parts
The maintenance of the parts related to the exhaust emission must be carried out in the maintenance
period as shown in the below table.
A guarantee period is that either the operation hours or years shown in the table come first in the
condition that the maintenance inspection was carried out based on the "List of Periodic Inspections".
Parts
Power Rating
37 <= kW < 130 Every 1500 hours
(applied from Tier 2)
19 <= kW < 37 Every 1500 hours
except constant
speed engines >=
-1
3000min
KW < 19 Every 1500 hours
And constant speed
engines beyond
-1
3000min under
37kW
Maintenance period
Fuel nozzle cleaning Adjustment, cleaning,
repairs for fuel nozzle, fuel
pump, turbocharger,
electronic control unit etc.
Every 3000 hours
(applied from Tier 2)
Every 3000 hours
Every 3000 hours
21
1. General
Quality Guarantee Period
For nozzle, fuel pump,
turbocharger
3000 hours / 5 years
3000 hours / 5 years
1500 hours / 2 years