Inspection Of Fuel Regulator - TOHATSU MFS25 Service Manual

Fuel System (Fuel Injection)

6) Inspection of Fuel Regulator

Remove cap 1.
1.
Connect pressure gauge 2 as shown.
2.
• Before connecting pressure gauge, cover
connection between pressure gauge and
valve with clean and dry cloth to prevent
fuel from releasing.
• Connect pressure gauge ass'y securely.
Pressure Gauge Ass'y :
P/N. 3T5-72880-0
3. Disconnect thin vent hose from fuel regulator, and connect
vacuum/pressure gauge 4 to fuel regulator 5.
Vacuum/Pressure Gauge :
P/N. 3AC-99020-0
4. Start engine and keep running at idle revolution speed.
Fuel Pressure (Reference) :
0.29 MPa ( 43 psi ) [ 3.0 kgf/cm
Apply vacuum pressure to fuel regulator 4 to check if fuel
5.
pressure is reduced. If fuel pressure is not reduced, replace
fuel regulator 5.
• Before measurement, be sure to check
that pressure relief valve is fully closed.
• Do not open pressure relief valve during
measurement. Opening the valve allows
fuel to spew out, possibly causing fire.
• After measurement, cover hose tip with
rag, and open pressure relief valve to
drain fuel from discharge hose and the
instrument.
• Before storing pressure gage, fully close
pressure relief valve.
4-30
WARNING
2 ] ±10%
WARNING
1
5
4
2
25/30 2006