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022-00029AE Operation and Maintenance Manual
Operation 3-5
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Black - Incomplete combustion. Check cause.
•
White or dark blue - Engine is burning engine oil. Check cause.
11.
Check for usual engine vibration and noises. If any are heard or felt, investigate cause.
NOTE:
If engine coolant temperature gauge shows red while running, take the following action;
Discontinue work and allow engine to run at "LOW IDLE." Open engine compartment
cover for good ventilation. Once engine temperature gauge returns to the green zone, shut
down engine. After engine has cooled, check coolant level, look for leaks, clogged or dirty
radiator fins (radiator core), and fan belt tension.