TM 10-3930-664-24 2. Disconnect exhaust pipe (1) from muffler  spark arrestor  (5)  by  removing  nuts  (6)  and  washers (7).    Separate  U-bolt  (8) from clamping brace (9)   by   removing   nuts   (10)   and   washers   (11). Separate exhaust pipe. 3. Tag  and  disconnect  electrical  wiring  harness  at plug (12).   Tag and disconnect white wire (13) in engine   wiring   harness   and   white   wire   (14)   in main   wiring   harness   from   black   wire!   (15)   on ether valve. 3-10