Chapter 3. Engine; Engine Inspection; Measuring The Compression Pressure - Yamaha MX360 Service Manual

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CHAPTER 3.

ENGINE INSPECTION

ENGINE INSPECTION
MEASURING THE COMPRESSION
PRESSURE
TIP
Measure the compression pressure after
checking and adjusting the valve clearance.
1. Warm up the engine for several minutes.
2. Remove:
9 Spark plug cap
9 Spark plug
NOTICE
Before removing the spark plug, use com-
pressed air to clean the cylinder head
cover to prevent dirt from falling into the
engine.
3. Connect:
9 Compression gauge 1
1
9 Extension 2
3-1
ENG
ENGINE
Engine compression tester:
YU-33223
Compression gauge:
90890-03081
Extension:
90890-04082