Maintenance and Lubrication: 0B-5
NOTE
• The tappet clearance should be taken
when each cylinder is at Top Dead Center
(TDC) of compression stroke.
• The cams (IN. & EX.) on the front cylinder
at position “A” show the front cylinder at
TDC of compression stroke.
• The cams (IN. & EX.) on the front cylinder
at position “B” show the rear cylinder at
TDC of compression stroke.
• The clearance specification is for COLD
state.
• To turn the crankshaft for clearance
checking, be sure to use a wrench, and
rotate in the normal running direction. All
spark plugs should be removed.
4) Remove the generator cover plug (4) and timing
inspection plug (5).
5) Turn the crankshaft to set the #1 (Front) cylinder at
TDC of compression stroke. (Align the “| F” line on
the generator rotor to the center of timing inspection
hole and also bring the camshafts to the position “A”
as shown in the figure.
6) To inspect the #1 (Front) cylinder tappet clearance,
use a thickness gauge between the tappet and the
cam. If the clearance is out of specification, adjust it
into the specified range.
Special tool
(A): 09900–20803 (Thickness gauge)
“B”
“A”
“A”
IN.
EX.
I944H1020009-03
4
5
I944H1020010-01
F
I944H1020011-01
EX.
IN.
“A”
I822H1020023-01
(A)
I944H1020013-01
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