2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 147Get this manual
Power Unit Mechanical: Check water jacketsIf clogged or obstructed, clean water jackets 1D-36
Manifold seating faces distortion Using straightedge and thickness gauge, check cylinder head to manifold seating facesIf measurement exceeds service limit, resurface or replace cylinder headSpecial tool (A): 0990020803 (Thickness gauge) Manifold seating faces distortion Service limit: 0.10 mm (0.004 in
I9J011140215-01
Cylinder head distortion Using straightedge and thickness gauge, measure cylinder head distortion (gasket surface) at total of six locations as shownIf measurement exceeds service limit, resurface or replace cylinder headSpecial tool (A): 0990020803 (Thickness gauge) Cylinder head distortion Service limit: 0.03 mm (0.001 in