24
MAINTENANCE
Valve Clearance
Valve clearances should be inspected and adjusted on a cool engine. The fuel tank may be left in
place.
Valve Clearance Inspection and Adjustment
1.
Remove the valve cover on top of the engine. It is held on by three screws. Wipe off any dirt or
oil on the rubber gasket and the gasket surface of the engine. Do not allow dirt to fall into the
engine.
2.
Remove the
spark plug
to allow the engine to be rotated easily.
3.
Remove the left side engine
timing cap
and crankshaft
inspection cap
. Rotate the engine
forward at the crankshaft (counterclockwise as viewed from the left side of the motorcycle) and
observe the opening and closing of the valves. After the intake valve closes, continue turning
until the
T
(Top) mark on the flywheel is showing in the timing inspection window. Both intake
and exhaust valves should be slightly loose, and the piston at top dead center as viewed
through the spark plug hole. The piston will be at top dead center on the compression stroke.
T
Valve cover screws
T mark
