Checking The Rocker Arms; Checking The Push Rod Guide; Checking The Push Rods; Checking The Valve Springs - Yamaha F2.5A Service Manual

POWR
6. Remove the intake valve and exhaust
valve.
6
5
NOTE:
Be sure to keep the valves, springs, and
other parts in the order as they were
removed.
Valve spring compressor 5:
90890-04019
Valve spring compressor
attachment 6:
90890-06320

Checking the rocker arms

1. Check the rocker arms for cracks, wear,
or damage. Replace if necessary.
5-15
Power unit
S69M5310
S69M5320

Checking the push rod guide

1. Check the push rod guide for cracks or
damage. Replace if necessary.

Checking the push rods

1. Check the push rods for bends, wear, or
damage. Replace if necessary.

Checking the valve springs

1. Measure the valve spring free length a.
Replace if out of specification.
Valve spring free length a:
35.0 mm (1.378 in)
S69M5330
S69M5340
69M3E11