Yamaha F2.5A Service Manual

Also see for F25A: Service manual Owner's manual Service manual Owner's manual Owner's manual

Contents

GENINFO General information1-1 69M3E11How to use this manual 1Manual formatThe format of this manual has been designed to make service procedures clear and easy to under-stand. Use the information below as a guide for effective and quality service.1 Parts are shown and detailed in an exploded diagram and are listed in the components list.2 Tightening torque specifications are provided in the exploded diagrams and after a numberedstep with tightening instructions.3 Symbols are used to indicate important aspects of a procedure, such as the grade of lubricantand lubrication point.4 The components list consist of part names and part quantities, as well as bolt and screw dimen-sions.5 Service points regarding removal, checking, and installation are shown in individual illustrationsto explain the relevant procedure.NOTE:For troubleshooting procedures, see Chapter 9, “Troubleshooting.”LOWR Lower unit6-5 62Y5A11Lower unitNo. Part name Q’ty Remarks1 Lower unit 12 Plastic tie 1 Not reusable3 Hose 14 Check screw 15 Gasket 2 Not reusable6 Dowel pin 27 Bolt 4 M10 40 mm8 Drain screw 19 Grommet 110 Bolt 1 M10 45 mm11 Bolt 1 M8 60 mm12 Thrust washer 113 Propeller 114 Washer 115 Washer 116 Cotter pin 1 Not reusable17 Propeller nut 118 Trim tab 1LOWR Lower unit6-19 62Y5A11Removing the drive shaft1. Remove the drive shaft assembly andpinion, and then pull out the forwardgear.Disassembling the drive shaft1. Install the pinion nut 1, tighten it fingertight, and then remove the drive shaftbearing 2 using a press.CAUTION:• Do not press the drive shaft threads adirectly.• Do not reuse the bearing, alwaysreplace it with a new one.Disassembling the forward gear1. Remove the taper roller bearing from theforward gear using a press.CAUTION:Do not reuse the bearing, always replaceit with a new one.2. Remove the needle bearing from the for-ward gear.CAUTION:Do not reuse the bearing, always replaceit with a new one.Drive shaft holder 4 1: 90890-06518Pinion nut holder 2: 90890-06505Socket adapter 2 3: 90890-06507Bearing inner race attachment 3:90890-06639S62Y6850KBearing separator 1: 90890-06534Stopper guide plate 2: 90890-06501Stopper guide stand 3:90890-06538Bearing puller 4: 90890-06535Bearing puller claw 1 5:90890-06536S62Y6740K543 2 1