12-10 - SERVICING – REPLENISHING
1. Refueling
A. Refer to Appendix A of the YO-233-B2A Engine Installation and Operation Manual for
approved fuel.
B. To prevent refueling with incorrect fuel:
(1) Know what fuel grades are specified for your engine and their color code.
(2) Do not accept any fuel that has a lower octane rating than the fuel specified for your
engine.
C. Refer to the airframe manufacturer’s manual for fuel capacity.
2. Oil Level Check
DURING ENGINE OPERATION, THERE ALWAYS MUST BE A
SUFFICIENT SUPPLY OF OIL IN THE ENGINE FOR CORRECT ENGINE
OPERATION. IF YOU OPERATE AN ENGINE WITH INSUFFICIENT OIL,
ENGINE FAILURE CAN OCCUR. REFER TO APPENDIX A OF THE YO-
233-B2A ENGINE INSTALLATION AND OPERATION MANUAL FOR
MINIMUM QUANTITY OF OIL IN FLIGHT.
A. The oil in the engine must be kept at the correct level for the engine to operate correctly.
B. Measure the oil level of an engine before every flight as follows:
(1) Make sure the engine is warm or cool to touch.
(2) Pull out the oil level gauge dipstick rod (Figure 1).
Figure 1
Oil Level Gauge (Dipstick Rod)
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