0175985 EVINRUDE PRIMER BULB ASSEMBLY

Before operation, the pump must be lubricated with clean engine oil and the pump must turn freely by hand or damage to parts can be the result.
Rotation (seen from the drive end) ... counterclockwiseTest on test stand, with SAE 10W oil at ... 49°C (120°F)Test on test stand, with SAE 10W oil at ... 49°C (120°F)Output ... 272 liter/min (72 U.S. gpm) At a pressure of ... 310 kPa (45 psi)With pump at ... 2550 rpmOutput ... 144 liter/min (38 U.S. gpm) At a pressure of ... 560 kPa (81 psi)With pump at ... 2550 rpm(1) Diameter of drive shaft ... 22.217 0.005 mm (.8747 .0002 in) Bore in bearings for drive shaft ... 22.258 0.008 mm (.8763 .0003 in)Diameter of idler shaft ... 22.217 0.005 mm (.8747 .0002 in)Bore in bearings for idler shaft ... 22.258 0.008 mm (.8763 .0003 in)(2) Length of gears ... 79.375 0.025 mm (3.1250 .0010 in) Depth of bores for gears ... 79.502 0.020 mm (3.1300 .0008 in)(3) 2S2760 Spring (oil pressure relief): Length under test force ... 117.9 mm (4.64 in)Test force ... 490 27 N (110 6 lb)Free length after test ... 152.9 mm (6.02 in)Outside diameter ... 27.00 mm (1.063 in)
Pump Body(4) Bearing junction.(5) Position of bearing junction from the centerline through bearing bores ... 30 15 degreesInstall bearings so they are even with outside of pump body and even with the FACE of the pump cover.(Two Section Gear)
Rotation of drive gear (as seen from drive end) ... counterclockwise Make reference to Timing Gears to find oil pump drive gear. Scavenge pump end (Section A)
(1) Diameter of drive shaft and idler shaft (new) ... 20.320 0.005 mm (.8000 .0002 in) Bore in bearings for drive shaft and idler shaft (new) ... 20.361 0.008 mm (.8016 .0003 in)(2) Length of gears (new) ... 65.07 0.05 mm (2.562 .002 in) Depth of bores for gears (new) ... 65.197 0.020 mm (2.5668 .0008 in)Spacer assembly
(3) Diameter of drive shaft and idler shaft (new) ... 22.217 0.005 mm (.8747 .0002 in) Bore in bearings for drive shaft and idler shaft (new) ... 22.258 0.008 mm (.8763 .0003 in)Pump body assembly (Section B)
(4) Length of gears (new) ... 79.375 0.025 mm (3.1250 .0010 in) Depth of bore for gears (new) ... 79.502 0.20 mm (3.3100 .0008 in)(5) Diameter of drive shaft and idler shaft (new) ... 22.217 0.005 mm (.8747 .0002 in) Bore in bearings for drive shaft and idler shaft (new) ... 22.258 0.008 mm (.8763 .0003 in)(6) 2S2760 Spring (oil pressure relief valve): Length under test force ... 117.9 mm (4.64 in)Test force ... 490 27 N (110 6 lb)Free length after test ... 152.9 mm (6.02 in)Outside diameter ... 27.00 mm (1.063 in) (7) Bearing junction (scavenge pump body).(8) Position of bearing junction from the centerline through bearing bores ... 30 15 degrees(9) Install bearings in bottom of gear bores to a depth of ... 1.52 0.25 mm (.060 .010 in)
Spacer Assembly(10) Spacer assembly bearing junctions.(11) Slots must be in location shown when small hole in bearing is aligned with centerline of splash holes (12).(12) Oil splash holes (lubricating holes).(13) Install spacer assembly bearings from Face A to a depth of ... 0.76 0.25 mm (.030 .010 in)
Pump Body(14) Pump body bearing junctions.(15) Position of pump body bearing junction from the centerline through bearing bores ... 30 15 degreesInstall bearings so they are even with outside of pump body.(16) Dowel height from the body housing is ... 6.4 mm (.25 in) (17) Install bearings in housing to a depth of ... 0.30 mm (.012 in)(18) Bore in bearings for oil pump shaft assemblies ... 22.258 mm (.8763 in) Rotation of pump must be free when turned by hand.