Suzuki drz 400 2005 User Manual

PERIODIC MAINTENANCE 2-27
COMPRESSION PRESSURE CHECK
The compression pressure reading of a cy linder is a good indicator of its internal condition.
The decision
to overhaul the cylinder is often based on the resu lt s of a compression tes t. Periodic mai nt e-
nance records kept at your dealership should include compression readings for each maintenance service.
~ Compression pressure
Standard: 950 kPa (9.5 kgflcm ', 135 psi)
(Automatic
decompression actuated)
Low compression pressure can indicate any of the following conditions:
* Ex cessively worn cylinder walls
* Worn piston or piston rings
* Piston rings stuck in grooves
* Poor va l ve seating
* Ruptured or otherwise defective cylinder head gasket
NOTE:
When the compression pressure goes below specification, check the engine for conditions list ed above.
COMPRESSION TEST PROCEDURE
NOTE :
* Before testing the engine for compression pressure, make sure
that the cylinder head bolts 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 fo llowing manner.
• Remove the spark plug. (r-r 2-9)
• I ns ta ll the compression gauge and adaptor in the spark plug
hole.
Make sure that the connection is tight.
• Keep the thrott le grip in the fully opon position.
• Press th e starter bu tt on and crank the engine for a few sec-
on
ds.
• Record the maximum gauge reading as the cylinder compres-
sion.
cmJ 09915-64510: Compression gauge set
09915-63310: Adaptor
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Suzuki drz 400 2005 Specifications

General

Brand	Suzuki
Model	drz 400 2005
Category	Motorcycle
Language	English