Universal Motorcycle Compression Tester GL1800 (2003) This oil-tube plug closes the

This oil-tube plug closes the engine oil-tube or oil-passage port at the listed lubrication-system location

Keep leads clear of moving parts while checking timing marks

Timing Light

Confirm this is for the rear brake caliper

Universal Motorcycle Compression Tester GL1800 (2003) This oil-tube plug closes theCompression Tester. This compression tester measures cylinder pressure through the spark plug hole. Use it to compare cylinder sealing condition after warming the engine and opening the throttle during the test. Fitment Compatibility Universal Custom: Engine diagnostic use only. Confirm spark plug thread adapter, hose reach, gauge range, and cylinder access. Product Details Use area: Engine compression tester. Before Ordering Confirm adapter thread,