7-1
Chapter 7 MAINTENANCE SCHEDULE
How to use the maintenance schedule
Periodic inspection not only extends the service life of the engine but also serves to ensure safe operation. Be sure
to conduct inspections and maintenance according to the maintenance schedule. The maintenance schedule
shows the standard service intervals. If you notice any abnormalities such as abnormal noise, black exhaust smoke,
white exhaust smoke, extremely high temperature of exhaust gas, abnormal vibration, and fuel, oil or exhaust gas
leakage, make sure to conduct the inspection and maintenance work, regardless of recommended service intervals
in the "Maintenance schedule."
Note: Appropriate service intervals vary depending on the usage and operating conditions as well as consumption
of fuel, oil and coolant. Check the operating record of the engine to determine the most appropriate service
intervals. (Feel free to consult your Mitsubishi dealer regarding service intervals.)
Service the items at multiples of the original requirement. For example, at 1000 service hours, also service those
items listed under every 250 service hours and every 50 service hours.
Items marked with * in the maintenance schedule require special tools or large equipment. For the servicing of
those items, contact your Mitsubishi dealer.
Table 7-1 Maintenance schedule
Interval Service item Page
Every 50 service hours
Draining water from the fuel tank
（With water sedimenter, every 500 service hours or every 1 years）
8-1
Checking the air cleaner 8-1
First 50 service hours for new or
overhauled engine
Checking and cleaning solenoid fuel pump filter 8-2
Changing the engine oil and oil filter 8-3
Re-tighten bolts and nuts on engine *
First 100 service hours Checking and cleaning solenoid fuel pump filter 8-2
Every 250 service hours
Changing the engine oil and oil filter 8-3
Inspecting V-belt and adjusting belt tension 8-6
Checking and cleaning the radiator fins 8-6
Every 400 service hours Changing fuel filter (Cartridge type) 8-7
Every 500 service hours
Changing fuel filter element (Cock type) 8-8
Inspecting and adjusting valve clearance *
Cleaning fuel tank (Every 500 service hours or every 1 years) *
Checking glow plug *
Replacing solenoid fuel pump filter 8-8
Every 1000 service hours
Inspecting starters 8-9
Inspecting alternator 8-9
Re-tighten bolts and nuts on engine *
Every 1500 service hours Cleaning nozzle tip *
Every 3000 service hours Checking fuel injection nozzle *
Every 2 years Changing the coolant 8-10
As required
Cleaning, inspecting, and replacing the air cleaner element 8-12
Bleeding the fuel system 8-13
Bleeding water sedimenter 8-13
Checking the specific gravity of battery electrolyte 8-14
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