Service manual

ManualsBrandsYamaha ManualsBoatFX140 WaveRunner 2003

5-98

E

POWR

CRANKSHAFT

SERVICE POINTS

Crankshaft removal

1. Remove:

• Crankshaft 1

• Crankshaft journal lower bearings

(from the lower crankcase)

• Crankshaft journal upper bearings

(from the upper crankcase)

NOTE:

Identify the position of each crankshaft journal

bearing so that it can be reinstalled in its origi-

nal place.

1

Crankshaft inspection

1. Measure:

• Crankshaft runout

Out of specification → Replace the

crankshaft.

Maximum crankshaft runout:

0.03 mm (0.0012 in)

2. Check:

• Crankshaft journal surfaces

• Crankshaft pin surfaces

• Bearing surfaces

Scratches/wear → Replace the crank-

shaft.

3. Measure:

• crankshaft-journal-to-crankshaft-journal-

bearing clearance

Out of specification → Replace the

crankshaft journal bearings.

Crankshaft-journal-to-crankshaft-

journal-bearing clearance:

0.020–0.057 mm

(0.0008–0.0022 in)