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3-12
E
CHK
ADJ
1
2
3
4
5
6
7
8
9
Compression pressure measurement
1. Measure:
•
Compression pressure
NOTE:
Make sure that the battery voltage is more
than 12 V.
Measurement steps:
1. Place the watercraft in the water.
2. Start the engine, allow it to warm up for 5
minutes, and then stop the engine.
3. Remove the engine cover
1
, bolts
2
,
ignition coils
3
, and spark plugs
4
.
NOTE:
•
Slide the engine cover rearward, and then lift
the cover to remove it.
•
Be careful not to get water or any other for-
eign substances in the spark plug holes.
4. Install the special service tools
5
and
6
.
5. Crank the engine until the reading on the
compression gauge stabilizes.
6. Measure the compression pressure for all
cylinders according to steps 4
–
5.
7. If the compression pressure is below spec-
ification, squirt a few drops of engine oil
into the cylinder and measure again.
Compression pressure
(reference data):
610 kPa (6.1 kgf/cm
2
, 86.8 psi)
Compression gauge extension
5
:
90890-06582
Compression gauge
6
:
YU-33223/90890-03160
Compression pressure
(with engine oil added into the cylinder)
Reading
Check
Higher than without
engine oil
Piston ring, and
piston
Same as without
engine oil
Valve clearance,
valve, valve seat,
cylinder head, and
cylinder head gasket
1
3
4
2
6
5
Power unit
Summary of Contents for WaveRunner FX SHO
Page 1: ...SERVICE MANUAL FX SHO WaveRunner F1W 28197 1K 11 FX Cruiser SHO LIT 18616 03 12 LIT186160312 ...
Page 58: ...1 53 E GEN INFO MEMO Technical tips ...
Page 82: ...2 23 E SPEC MEMO Cable and hose routing ...
Page 110: ...3 27 E CHK ADJ MEMO General ...
Page 243: ...5 118 E POWR 1 2 3 4 5 6 7 8 9 MEMO Cooling water ...
Page 275: ...6 30 E JET PUMP 1 2 3 4 5 6 7 8 9 MEMO Intermediate housing ...
Page 353: ...E ELEC 1 2 3 4 5 6 7 8 9 7 76 MEMO Indication system ...
Page 410: ...8 55 E HULL HOOD MEMO Deck and hull ...
Page 429: ...9 18 E TRBL ANLS 1 2 3 4 5 6 7 8 9 MEMO Engine unit trouble analysis ...
Page 431: ......
Page 432: ...YAMAHA MOTOR CORPORATION USA Printed in USA Jan 2008 0 0 1 CR E ...