Komatsu PC88MR-10 Shop Manual page 503

Testing in accordance with testing procedure
a. Engine, lubricating oil, and coolant
a7. Check of fuel level and type
Fuel is highly flammable and dangerous.
Never bring open flames near fuel.
When adding fuel, never spill it or let it
overflow.
Wipe off any spilled fuel. If fuel spills over
soil or sand, remove all the fuel and soil or
sand together.
1. Turn the starting switch to ON position, and
check the fuel level with fuel level gauge (1) on
the monitor panel.
After checking, turn the switch back to OFF
position.
2. If the fuel level is low, open the soil cover, open
fuel filler cap (F) of the fuel tank and add fuel
through the fuel filler port to the necessary level,
referring to the position of float gauge (G).
3. After adding fuel, push float gauge (G) straight
down with fuel filler cap (F) and tighten fuel filler
cap (F) securely while taking care the float
gauge (G) will not be caught in tab (2) of fuel
filler cap (F).
PC88MR-10
Related information on troubleshooting
(PC88MR-5150-280-A-00-A)
If breather hole (3) in the oil filler cap is
clogged, the pressure in the tank decreases
and fuel may not be supplied. To prevent this,
clean the breather hole.
a9. Check of fuel prefilter
Immediately after the engine is stopped, its
parts and oil are still very hot, and may cause
burn injury. Accordingly, wait until all parts
have cooled down before starting the work.
High pressure is generated inside the engine
fuel piping system when the engine is
running. Stop the engine and wait at least 30
seconds until the inner pressure is released
and then replace the filter.
Never bring open flames near fuel.
a A special filter with high-efficiency filtering
properties is adopted for Komatsu genuine fuel
filter cartridges. Be sure to use Komatsu
genuine parts when replacing.
40 Troubleshooting
40-15