Suzuki DF25/DF30 Four Stroke Service Manual, Page 133Get this manual
7-16 POWER UNIT (10) Turn crankshaft normal running direction revolutions and check that match marks are aligned as shown in figure2 1
NOTE: Before installing power unit, apply sealant to hatched part (6 parts) shown in the illustration right99000-31140Suzuki Bond 1207B
(11) Adjust valve clearance (see page 2-9) To bring each piston to Top Dead Center (TDC) on compression stroke, align each match mark on camshaft sprocket with match mark on cylinder head block1234Match Match Match Match