General Information [Special Tools-Sealing Agents And Lubricants] [1986]

Engine serial number

The engine serial number is stamped on the plate attached to the cylinder body.

1. Engine serial number

Model and serial number

The model and serial number plate is attached to the port side clamp bracket.

1. Model and serial number

The proper special tools are necessary for complete and accurate tune-up and assembly.
Using the correct special tool will help prevent damage caused by the use of improper tools or improvised techniques.

For tune-up

1. Compression gauge
   P/N. YU-33223-1

2. Timing light
   P/N. VM-33277

This timing light is used for checking the ignition timing.

3. Tachometer
   P/N. YU-8036

This tachometer is used for checking the engine speed.

4. Test propeller
   P/N. VB-1626

For engine service

1. Flywheel magneto holder
   P/N. YB-6139

This tool is used for removing and tightening the flywheel securing nut.

2. Flywheel magneto puller
   P/N. YB-6117

This tool is used for removing the flywheel.

3. Bearing separator
   P/N. YB-6219

This tool is used for removing the bearing.

4. Con-rod small end bearing installer
   P/N. YB-6240

This tool is used for installing the con-rod small and bearing.

5. Eye nut
   P/N. YB-6202

This tool is used for installing and removing the power unit.

6. Crank upper bearing installer
   P/N. VB-6205

This tool is used for removing and installing the roller bearing.

7. Oil seal installer
   P/N. YB-6244

This tool is used for installing the oil seal (Use handle P/N. YB-6013)

8. Piston slider
   P/N. YB-34454

This tool is used for installing the piston.

9. Dial gauge set
   P/N. 1. YU-3097 Gauge
10. YU-1256 14 mm Hole Adapter
11. YU-1037 Stand
12. YU-1038 Bolt

This dial gauge set is used for adjusting the ignition timing and the dial gauge is used for determining the gear shim.

For lower unit service

1. Bearing housing nut torquing tool
   P/N. YB-34447

This tool is used for tightening and removing the bearing housing nut.

2. Bearing housing puller
   P/N. YB-6207

This tool is used for removing the bearing housing. (Use with YB-6117)

3. Torquing tool
   P/N. YB-6201

These tools are used when loosening and tightening the pinion gear nut.

Drive shaft puller
P/N. YB-34449

Shift rod handle
P/N. YB-6052

4. Slide hammer puller
   P/N. YB-6096

This tool is used for removing the taper roller bearing outer race.

5. Roller bearing remover
   P/N. YB-6194

This tool is used for removing the roller bearing outer race. (Use with YB-6229)

6. Center bolt
   P/N. YB-6029

Roller bearing installer
P/N. YB-6246

Plate drive shaft
P/N. YB-6169

These tools are used when installing the drive shaft roller bearing.

7. Bearing installer
   P/N. YB-6261

This tool is used when installing the needle bearing and taper roller bearing.
(Use handle P/N. YU-6071)

8. Shimming gauge
   P/N. YB-34432

This tool is used for adjustment of pinion gear shim.

10. Attachment
    P/N. YB-6195

This tool is used for installing the oil seal. (Use handle P/N. YB-6071)

11. Bearing installer
    P/N. YB-6258

12. Backlash indicator rod
    P/N. YB-6265

This tool is used for measuring the gear backlash.
(Use dial gauge stand P/N. YU-34481, dial gauge YB-3097 bearing housing puller P/N. YB-6207)

13. Reverse gear shimming gauge
    P/N. YB-34468

This tool is used for adjusting the reverse gear shim.

14. Forward gear shimming gauge body
    P/N. YB-34446

15. Driver head
    P/N. YB-6196

This tool is used for removing the needle bearing. (Use with handle YB-6071)

16. Magnetic flexible stand
    P/N. YU-34481
    Plate magnetic
    P/N. YB-7003

These tools are used for measuring the backlash for the forward/reverse gear.

For power trim and tilt

1. Handle cylinder end 1
   P/N. YB-6175

This tool is used for loosening and tightening the tilt cylinder and trim cylinder endscrew.

2. Trim and tilt oil pressure gauge
   P/N. YB-6181

This gauge is used for measuring the trim and tilt chamber oil pressure.

3. Seat installer
   P/N. YB-6188

This tool is used for installing the union seat.

For electrical components

1. Yamaha pocket tester
   P/N. YU-3112

2. Ignition coil tester
   P/N. YU-91022

Sealing agents

1. Yamaha Bond No. 4
   P/N. ACC-11001-30-00

Lubricants

1. Water-resistant grease (Yamaha Grease A)

2. Anti-freeze grease (Yamaha Grease C)

3. Anti-corrosion grease (Yamaha Grease D)

4. Hypoid gear oil No. 90