Engine 2014: General Subjects

1. A open the acetylene valve until the hose pressure is 26 PSIG
2. B open the acetylene cylinder valve only 1/4 to 1/2 turn and  leave the wrench on the valve stem
3. C a leaking hose must be repaired by binding with tape
4. D a flashback of flame into the hose is normal

Tip: press A-D to answer