General Information [Special Tools] [1987]

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

1. Engine 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.

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

2. Timing light
   P/N. YU-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. YB-1624

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 end bearing

5. Engine lifting hook
   P/N. YB-6202

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

6. Bearing remover & installer
   P/N. YB-6205

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

7. Needle bearing remover
   P/N. YB-6194

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

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
• 2. YU-1256 14 mm Hole Adapter
• 3. YU-1037 Stand
• 4. 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.

1. Gland nut spanner wrench
   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. Drive shaft torquing adapter
   P/N. YB-6201

This tool is used for loosing and tightening the pinion gear nut.

4. Needle bearing remover & Installer
   P/N. YB-6213

5. Drive shaft puller
   P/N. YB-34449

This tool is used for removing the drive shaft (Use with YB-6096)

6. Shift rod push arm
   P/N. YB-6052

This tool is used for checking the shifting.

7. Slide hammer
   P/N. YB-6096

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

8. Rod driver
   P/N. YB-6071

9. Bearing installer
   P/N. YB-6200

10. Shimming gauge
    P/N. YB-34432

This tool is used for adjustment of pinion gear shim.

11. Attachment ing housing puller P/N. YB-6207)
    P/N. YB-6195

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

12. Bearing installer
    P/N. YB-6199

This tool is used for installing the taper roller bearing. (Use with handle YB-6071)

13. 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 bear 11. Attachment ing housing puller P/N. YB-6207)

14. Reverse gear shimming gauge
    P/N. YB-34468-2

This tool is used for adjusting the reverse gear shim.

15. Forward bearing shimming gauge Ass'y
    P/N. YB-34446

16. Needle bearing installer
    P/N. YB-6196

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

17. 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.

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

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

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.

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

2. CDI tester
   P/N. YU-91022

Sealing agents

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

Lubricants

1. All purpose marine grease
   P/N LUB-GREAS-14-00

2. Gear case lubricant
   P/N LUB-GEARL-11-00 (11 oz. tube)
   LUB-GEARL-01-GL (1 gal. bottle)