TRBL
SHTG
Troubleshooting
9-17
6C13G11
Lubrication system
No
Yes
Replace the needle valve.
Is the needle valve
bent or worn?
Check the ignition system, lubri-
cation system, or cooling sys-
tem.
No
Yes
Check the vapor separator nee-
dle valve.
Replace the diaphragm.
Cracks or damage?
Add engine oil to the correct
level.
No
Replace the oil pressure switch.
At specified level?
Check the engine oil level.
Yes
Check the oil pressure.
Check the oil pressure switch.
Good condition?
Yes
No
Continued on next page.
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