Honda HRS216PKA Manual page 25

SERVICE INFORMATION
9. TROUBLESHOOTING TECHNIQUES
COMPRESSION TEST
1. Remove the spark plug and install a compression gauge
in the spark plug hole.
2. Hold the flywheel brake lever against the handlebar.
3. Crank the engine briskly several times with the recoil
starter and measure compression.
Compression*
*Decompression mechanism engaged
A compression test reading above 550 kPa (80 psi)
indicates the decompression system may not be working
correctly. See STARTING DECOMPRESSION SYSTEM
INSPECTION below.
STARTING DECOMPRESSION SYSTEM INSPECTION
Measure the compression first and proceed if the compression measures greater than 80 psi.
The engine must be completely cool before proceeding.
1. Remove the recoil starter
2. If there is gasoline in the fuel tank, drain it into an approved container.
3. Remove the fan cover
Do not tilt the fan cover with fuel in the tank; this will saturate the charcoal in the fuel cap and prevent it from
venting properly.
4. Remove the four 6 mm flange bolts and remove the cylinder head cover.
5. Disconnect the spark plug cap.
6. Rotate the flywheel until the engine is at TDC (top dead
center) of the compression stroke. The cam pulley lobe will
face directly out, away from the block as shown.
2-16
420 kPa (61 psi)
at 600 rpm
(P. 6-1).
(P. 7-17).
HRS216PKA • HRS216SKA • HRS216VKA
TOP DEAD CENTER
COMPRESSION
GAUGE
(commercially
available)