1-19
E
GEN
INFO
Cylinder head assembly
The newly designed cylinder head has 4 valves per cylinder: 2 intake valves and 2 exhaust valves.
The shapes of the combustion chamber and piston have been designed to obtain the optimum com-
pression ratio. The valve lifter is a direct-acting type with a valve pad. The valve spring is a single
type.
1
Valve lifter
2
Valve pad
3
Valve spring
4
Intake valve
5
Exhaust valve
Hydraulic timing chain tensioner
A hydraulic timing chain tensioner has been adopted in order to ensure that the tension on timing
chain is maintained. When the engine is started and engine oil is supplied to the timing chain ten-
sioner, the structure of the tensioner ensures that the rod is maintained in the proper position.
1
Timing chain tensioner
È
Fully extended rod position
É
Fully retracted rod position
EX
IN
3
4
5
2
1
3
2
1
1
É
È
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 ...