Table 4-2. Unit Maintenance Troubleshooting - Continued
TEST OR INSPECTION
Gasoline used in operating this heater is explosive.
Do not refuel during operation.
Avoid open flame near gas tank filler neck and draincock.
Keep cap on gas tank except during refueling and draining.
Make sure a Class 20-B:C fire extinguisher is in easy reach.
Dispose of waste gasoline in a safe manner.
b. Drain contaminated fuel from fuel tank. Flush fuel tank and refill.
7. EXCESSIVE SMOKE IN HEATER EXHAUST
Step 1. Check nozzle for correct spray.
Dry cleaning solvent P-D-680 used to clean parts is potentially dan-
gerous to personnel and property. Flash point of solvent is 100° to
138°F (38 to 59°C).
Avoid repeated and prolonged skin contact.
Do not use near open flame or excessive heat.
Clean nozzle or replace if defective. (See paragraph 4-59.)