Mercury Optimax 135 Service Manual

FUEL PUMP
90-855347R1 JANUARY 1999 Page 3A-7
Cleaning/Inspection
1. Clean fuel pump housing, check valves, pulse chamber and pump base in solvent and
dry all but check valves with compressed air.
2. Inspect each check valve for splits, chips and for proper sealing against pump hous-
ing.
3. Inspect boost springs for weakness or breakage.
4. Inspect fuel pump housing, pulse chamber and base for cracks or rough gasket sur-
face and replace if any are found.
5. Inspect fitting on fuel pump housing for loosening or any signs of fuel or air leaks. Re-
place or tighten fitting if a leak is found.
Reassembly/lnstallation
ASSEMBLY
1. Insert retainer thru plastic disc and rubber check valve.
23601
a
b
c
a-Retainer
b-Plastic Disc
c-Rubber Check Valve
2. Install check valves and retainers into fuel pump body.

Mercury Optimax 135 Specifications

General

Engine Type	V6
Horsepower	135 HP
Fuel Induction System	2-stage direct fuel injection
Full Throttle RPM Range	5000-5750 RPM
Alternator Output	60 amp / 756 watt
Starting System	Electric
Steering	Remote
Dry Weight	431 lbs
Shaft Length	20", 25"