NOTE
Use the battery which is fully charged.
Special Tools - Compression Gauge, 20 kgf/cm²: 57001-221 Compression Gauge Adapter, M10 × 1.0: 57001-1601 L-Shape Hose [C]: 57001-1606
Cylinder Compression
Usable Range: 1 099 
1 668 kPa (11.2
17.0 kgf/cm²,
159 
242 psi) at 320 r/min (rpm)
The following table should be consulted if the obtainable compression reading is not within the usable range.
| Problem | Diagnosis | Remedy (Action) |
| Cylinder compression is higher than usable range | Carbon accumulation on piston and in combustion chamber possibly due to damaged valve stem oil seal and/or damaged piston oil rings (This may be indicated by white exhaust smoke). | Remove the carbon deposits and replace damaged parts if necessary. |
| Incorrect cylinder head gasket thickness | Replace the gasket with a standard part. | |
| Cylinder compression is lower than usable range | Gas leakage around cylinder head | Replace damaged gasket and check cylinder head warp |
| Bad condition of valve seating | Repair if necessary. | |
| Incorrect valve clearance | Adjust the valve clearance. | |
| Incorrect piston/cylinder clearance | Replace the piston and/or cylinder. | |
| Piston seizure | Inspect the cylinder and replace/repair the cylinder and/or piston as necessary. | |
| Bad condition of piston ring and/or piston ring grooves | Replace the piston and/or the piston rings. |
Cylinder Head
Cylinder Head RemovalBattery Maintenance
It is the owner’s responsibility to keep
the battery fully charged. Failure to do
so can lead to battery failure and leave
you stranded.
If you are riding your vehicle infrequently,
inspect the battery voltage
weekly using a voltmeter. If it drops
below 12.8 volts, the battery should be
...
Spring Preload Adjustment
The spring preload adjuster is located
at the lower end of each front fork leg
and can be adjusted.
To increase spring preload and
stiffen the suspension, turn the
preload adjuster clockwise with a
hexagon wrench.
To decrease preload and soften the
suspension, turn the preload adjust ...
KIBS Hydraulic Unit Communication Error (Service Code 1b, KIBS Equipped
Models)
KIBS Hydraulic Unit Communication Line Inspection
When the data (for status of KIBS hydraulic unit) is not
sent from the KIBS hydraulic unit to the meter unit and
ECU, the service code 1b is displayed.
The data is sent through the CAN communication line.
The service code 1b is detected with the ...