maintenance
NOTICE
The air filter should be changed more frequently in dusty operating conditions.
If the engine is operating in very dusty or dry grass conditions, a clogged air cleaner will result.This can lead to a loss of power, excessive carbon buildup in the combustion chamber and high fuel consumption. Change air cleaner more frequently if these conditions exist.
Fuel Addition
Add diesel fuel (the grade may vary according to season and locations).
Removing Water from the Fuel Tank
After prolonged use, water and other impurities accumulate in the bottom of the tank. Occasionally inspect the fuel tank for water contamination and drain the contents if necessary.
During cold weather, the more empty volume inside the tank, the easier it is for water to condense. This can be reduced by keeping the tank full with diesel fuel.
Cleaning Inside the Fuel Tank
If necessary, drain the fuel inside the fuel tank completely. Using a spray washer (Figure 24) wash out any deposits or debris that have accumulated inside the fuel tank.
Figure 24. Fuel Tank Cleaning
Fuel Tank Inspection
In addition to cleaning the fuel tank, the following components should be inspected for wear:
Rubber Suspension — look for signs of wear or deformity due to contact with oil. Replace the rubber suspension if necessary.
Fuel Hoses — inspect nylon and rubber hoses for signs of wear, deterioration, and hardening.
FuelTank Lining — inspect the fuel tank lining for signs of excessive amounts of oil and other foreign matter.
Replacing Fuel Filter
Replace the fuel filter cartridge with a new one every 500 hours.
Loosen the drain plug at the lower top of the fuel filter. Drain the fuel in the fuel body together with the mixed water. DO NOT spill the fuel during disassembly.
Vent any air.
Air Removal
If air enters the fuel injection system of a diesel engine, starting becomes impossible. After running out of fuel, or after disassembling the fuel system, bleed the system. Refer to the Perkins engine manual for details.
Check Oil Level
Check the crankcase oil level prior to each use, or when the fuel tank is filled. Insufficient oil may cause severe damage to the engine.The oil level must be between the two notches on the dipstick as shown in Figure 7.
Replacing Oil Filter
1.Remove the old oil filter.
2.Apply a film of oil to the gasket on the new oil filter.
3.Install the new oil filter.
4.After the oil filter has been replaced, the engine oil will drop slightly. Run the engine for a while and check for leaks before adding more oil if needed. Clean excessive oil from engine.
MQP20P STANDBY GENERATOR • operation and parts manual — rev. #1 (11/28/11) — page 33
