8.5
Section 8
Disassembly
8
Pulse Style Pumps
1. Disconnect the fuel line at the in-line fuel
fi
lter on
the tank to pulse pump line. See Figure 8-16.
Figure 8-16. Fuel Inlet Line Location.
2. Disconnect the pulse (vacuum) line from the
crankcase. See Figure 8-17.
Pulse
Pulse
Pump
Pump
Figure 8-17. Disconnecting Pulse Line from
Crankcase.
3. Remove the two hex
fl
ange screws securing the
fuel pump to the bracket on the blower housing.
See Figure 8-18
Inlet Fuel Line
Inlet Fuel Line
In-Line Filter
In-Line Filter
(Tank to Pulse
(Tank to Pulse
Pump)
Pump)
Pulse Pump
Pulse Pump
Bracket
Bracket
Pump
Pump
Outlet
Outlet
Mounting
Mounting
Screws
Screws
Pump
Pump
Assembly
Assembly
Pump
Pump
Inlet
Inlet
WARNING
Explosive Fuel can cause
fi
res and
severe burns.
Fuel systems ALWAYS remains under
HIGH PRESSURE.
Fuel Fire and Burns!
Wrap a shop towel completely around the fuel pump module
connector. Press the release bu
tt
on(s) and slowly pull the
connector away from the fuel pump module allowing the shop
towel to absorb any residual fuel in the high pressure fuel line.
Any spilled fuel must be completely wiped up immediately.
Figure 8-18. Fuel Pump Mounting Screw Locations.
4. Note or mark the orientation of the fuel pump,
then remove the fuel pump with lines a
tt
ached.
Mechanical Style Pumps
The mechanical style fuel pump is part of the valve
cover assembly. See Figure 8-19.
Figure 8-19. Mechanical Style Fuel Pump.
1. Disconnect the fuel lines at the pump outlet and
the in-line fuel
fi
lter. See Figure 8-19.
2. The fuel pump will be removed with the
valve cover. Refer to the valve cover removal
procedure.
Remove Fuel Pump Module
1. Remove the three screws securing the fuel pump
module.
2. Using a side cu
tt
er or similar tool, cut the Oetiker
clamp to remove the inlet fuel line. A new Oetiker
clamp will need to be used for reassembly. See
Figure 8-20.
Содержание Command PRO CH749
Страница 1: ...SERVICE MANUAL ECH630 ECH749 HORIZONTAL CRANKSHAFT ...
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Страница 76: ...6 6 Section 6 Lubrication System ...
Страница 94: ...7 18 Section 7 Electrical System and Components ...
Страница 112: ...8 18 Section 8 Disassembly ...
Страница 126: ...9 14 Section 9 Inspection and Reconditioning ...
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