Suzuki Wagon R Manual page 3685

6-4-4 ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z10XEP AND Z12XEP ENGINES)
Precaution on fuel system service
• Work must be done with no smoking, in a well-ventilated
area and away from any open flames.
• A small amount of fuel may be released after fuel line is dis-
connected.
In order to reduce the chance of personal injury, cover fitting
to be disconnected with a shop cloth. Put that cloth in an
approved container when disconnection is completed.
• Never run engine with main relay disconnected when engine
and exhaust system are hot.
• Fuel or fuel vapor hose connection varies with each type of
pipe. When reconnecting fuel or fuel vapor hose, be sure to
connect and clamp each hose correctly referring to the fig-
ure.
After connecting, make sure that it has no twist or kink.
[A]: With short pipe, fit hose as far as it reaches pipe joint as shown.
[B]: With following type pipe, fit hose as far as its peripheral projection as shown.
[C]: With bent pipe, fit hose as its bent part as shown or till pipe is about 20 to 30 mm
(0.79 – 1.18 in.) into the hose.
[D]: With straight pipe, fit hose till pipe is, about 20 to 30 mm (0.79 – 1.18 in.) into the hose.
1. Hose
2. Pipe
3. Clamp
4. Clamp securely at a position 3 to 7 mm (0.12 – 0.27 in.) from hose end.
5. 20 to 30 mm (0.79 – 1.18 in.)
• When installing injector, fuel feed pipe or fuel pressure regu-
lator, lubricate its O-ring with spindle oil or fuel.
• When connecting fuel pipe flare nut, first tighten flare nut by
hand and then tighten it to specified torque, using back-up
wrench.
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.
NOTE:
If any service shown below is performed, ECM may
detect DTC(s). Therefore, clear DTC(s) by referring to
"DTC Clearance" in this section in case that DTC(s) is
detected after all services are done.
After making sure that engine is cold, release fuel pressure as fol-
lows.