Suzuki GA413 Service Manual page 295

1. Fuel pump relay
GENERAL INFORMATION ON ENGINE
SERVICE
THE FOLLOWING INFORMATION ON ENGINE SERVICE
SHOULD BE NOTED CAREFULLY, AS IT IS IMPORTANT IN
PREVENTING DAMAGE, AND IN CONTRIBUTING TO RELI-
ABLE ENGINE PERFORMANCE.
D When raising or supporting engine for any reason, do not use a
jack under oil pan. Due to small clearance between oil pan and
oil pump strainer, jacking against oil pan may cause it to be bent
against strainer resulting in damaged oil pick-up unit.
D It should be kept in mind, while working on engine, that 12-volt
electrical system is capable of violent and damaging short cir-
cuits.
When performing any work where electrical terminals could
possibly be grounded, ground cable of the battery should be dis-
connected at battery.
D Any time the air cleaner, air intake hose, throttle body or intake
manifold is removed, the intake opening should be covered. This
will protect against accidental entrance of foreign material which
could follow intake passage into cylinder and cause extensive
damage when engine is started.
D When disconnecting couplers, don't pull wire harness but make
sure to hold coupler itself. With lock type coupler, be sure to un-
lock before disconnection. Attempt to disconnect coupler with-
out unlocking may result in damage to coupler. When
connecting lock type coupler, insert it till clicking sound is heard
and connect it securely.
D Do not crank the engine for more than 15 seconds at a time. If
the engine doesn't start on the first try, wait about 15 seconds be-
fore try again.
FUEL PRESSURE RELIEF PROCEDURE
CAUTION:
This work must not be done when engine is hot. If done
so, it may cause adverse effect to catalyst.
After making sure that engine is cold, relief fuel pressure as follows.
1) Place transmission gear shift lever in "Neutral", set parking
brake, and block drive wheels.
2) Remove fuel pump relay from main fuse box.
3) Remove fuel filler cap to release fuel vapor pressure in fuel tank
and then reinstall it.
4) Start engine and run it till it stops for lack of fuel. Repeat crank-
ing engine 2 – 3 times of about 3 seconds each time to dissipate
fuel pressure in lines. Fuel connections are now safe for servic-
ing.
5) Upon completion of servicing, install fuel pump relay to main
fuse box.
ENGINE 6-3