Table 4-2. Unit Maintenance Troubleshooting - Continued
TEST OR INSPECTION
1. ENGINE FAILS TO START
Gasoline used in operating this heater is explosive.
Do not refuel during operation.
Avoid open flame near gas tank filler neck,
Keep cap on gas tank except during refueling.
Make sure a Class 20-B:C fire extinguisher is in easy reach.
Step 1. Check fuel gauge (1) for adequate fuel supply.
Remove fuel tank cap (2) and replenish supply.
Step 2. Check whether restriction indicator shows the color red.
Remove air filter cartridge and clean or replace as described in paragraph 427.