2007 Arctic Cat Four-Stroke Factory Service Manual, Page 140Get this manual
! NOTE: To finalize the removing of the spark plugs, use the following step 13 13Remove the two cap screws securing the ignition coils to the engine cover; then using 38inch drive ratchet, adapter, and 58-inspark plug socket, remove the two spark plugs! NOTE: For installing the spark plugs, proceed to Installing Spark Plugs (1100 cc Z1) in this section
Checking Compression
(1100 cc Z1)
! NOTE: Prior to this test procedure, make certain the battery is fully charged and the console is positioned over the support bracket with the hood main harness plugged in! NOTE: This test must be done with the engine at "full-cranking RPM" and the decompression system active
13Connect the breather tube to the engine cover
! NOTE: Make sure that the breather tube is connected to the clamp at the top cap screw on the intake plenum brace
With the spark plugs removed, install the compression tester gauge with adapter into the spark plug hole; then with the throttle valve in the full-open position, crank the engine over to get the psi readingCompression should be 8.4 kg-cm (120 psi)