Service Points; Piston Pin Clip Removal And Installation; Piston Inspection - Yamaha WaveRunner GP800R Service Manual

POWR
PISTONS

SERVICE POINTS

Piston pin clip removal and installation

1. Remove and install:
Piston pin clip
NOTE:
Before removing or installing the piston pin
clip, cover the crankcase opening with a
clean rag to prevent the piston pin clip from
falling into the crankcase.

Piston inspection

1. Eliminate:
Carbon deposits
(from the piston crown and piston
ring grooves)
2. Inspect:
Piston wall
Score marks → Repair with 600–800
grit wet sandpaper or replace.
NOTE:
Lightly sand the piston wall in a crisscross
pattern.
3. Measure:
Piston skirt diameter
(with a micrometer)
Out of specification → Replace.
Piston diameter
79.899–79.914 mm
(3.1456–3.1462 in)
5-24
E
Distance a
22 mm
(0.87 in)