
PERIODIC MAINTENANCE 2-24
COMPRESSION PRESSURE CHECK
The compression pressure reading of a cylinder is a good indicator of its internal condition.
The decision to overhaul the cylinder is often based on the results of a compression test. Periodic mainte-
nance records kept at your dealership should include compression readings for each maintenance service.
COMPRESSION PRESSURE SPECIFICATION
Low compression pressure can indicate any of the following conditions:
* Excessively worn cylinder walls
* Worn piston or piston rings
* Piston rings stuck in grooves
* Poor valve seating
* Ruptured or otherwise defective cylinder head gasket
NOTE:
When the compression pressure goes below specification, check the engine for conditions listed above.
COMPRESSION TEST PROCEDURE
NOTE:
* Before testing the engine for compression pressure, make
sure that the cylinder head nuts are tightened to the specified
torque values and the valves are properly adjusted.
* Warm up the engine before testing.
* Make sure that the battery is fully-charged.
Remove the related parts and test the compression pressure in
the following manner:
• Remove the spark plug. (
$
2-9)
• Install the compression gauge and adaptor in the spark plug
hole. Make sure that the connection is tight.
• Keep the throttle grip in the fully opened position.
• Press the starter button (for FL125SD) or kick the kick starter
lever (for FL125S) and crank the engine for a few seconds.
Record the maximum gauge reading as the cylinder compres-
sion.
&
09915-64512: Compression gauge set
09913-10750: Adaptor
Standard
Limit
1 200 – 1 700 kPa
(12 – 17 kgf/cm²)
750 kPa
(7.5 kgf/cm²)
Содержание FL125S
Страница 1: ...9 9 5 0 0 3 1 3 7 1 0 1 E...
Страница 34: ...2 23 PERIODIC MAINTENANCE...
Страница 132: ...4 12 FUEL AND LUBRICATION SYSTEM Remove the throttle position switch T from the top cap L...
Страница 145: ...CHASSIS 5 8 Disconnect the rear turn signal light coupler 1 and rear com bination light coupler 2...
Страница 206: ...6 6 ELECTRICAL SYSTEM 1 CDI unit 2 Starter relay For FL125SD 3 Starter motor For FL125SD...
Страница 262: ...7 25 SERVICING INFORMATION BRAKE PEDAL L o n g 11 mm S h o r t...
Страница 263: ...SERVICING INFORMATION 7 26 PILLION FOOTREST Cotter pin Bend the cotter pin and its ends should face upward...
Страница 297: ...FL125SDW 8 22 A ECM I Ignition coil IG coil H Speedometer J Crankshaft position sensor CKPS...
Страница 398: ...Prepared by March 2007 Part No 99500 31371 01E Printed in Japan 396...
Страница 399: ...Printed in Japan K7...