Suzuki Jimny Service Manual page 601

6C-6 ENGINE FUEL
12) Remove fuel tank (1) from vehicle. Remove fuel tank protec-
tor (3) and inlet valve (2) as necessary.
FUEL TANK PURGING PROCEDURE
CAUTION:
This purging procedure will not remove all fuel vapor. Do
not attempt any repair on tank where heat or flame is
required, as an explosion resulting in personal injury
could occur.
The following procedure is used for purging the fuel tank.
1) After removing fuel tank, remove all hoses and fuel pump
assembly from fuel tank.
2) Drain all remaining fuel from tank.
3) Move tank to flushing area.
4) Fill tank with warm water or tap water, and agitate vigorously
and drain. Repeat this washing until inside of tank is clean.
Replace tank if its inside is rusty.
5) Completely flush out remaining water after washing.