Valve Arrangement
- Left Side - Intake and Jet Valves.
- Right Side - Exhaust Valves.NOTE: Jet valve clearance adjustment must be made before intake valve is adjusted. Also, readjust after cylinder head is retightened.
- Warm engine to normal operating temperature. Remove all spark plugs for ease of operation. Remove valve cover and position No. 1 piston at TDC of compression stroke to adjust clearances marked "A". See Fig 1.CAUTION: Never turn crankshaft counterclockwise. Jet valve spring is comparatively weak and must not be forced in when making adjustment.
- Position cylinder No. 4 at TDC of compression stroke to adjust clearances marked "B". Adjust by repeating steps 1) and 2).
VALVE CLEARANCE SPECIFICATIONS
| Application | Cold: In. (mm) | Hot: In. (mm) |
|---|---|---|
| Intake | .003 (.07) | .006 (.15) |
| Exhaust | .007 (.17) | .010 (.25) |
| Jet Valve | .007 (.17) | .010 (.25) |