2008 Suzuki LT-A400/F, LT-F400/F ATV Service Manual, Page 104Get this manual

2008 Suzuki LT-A400/F, LT-F400/F ATV Service Manual, Page 104

1D-28 Engine Mechanical: Valve Seat Repair The valve seats (1) for both the intake and exhaust valves are machined to three
if found worn down to the limitSpecial tool0990020202 (Micrometer (1100 mm, 25 50 mm)) Cam height "H" Service limit (IN:
32.830 mm (1.2925 in) Service limit (EX: 32.830 mm (1.2925 in) The valve seat contact area must be inspected after each cut
Do not use lapping compound after the final cut is madeThe finished valve seat should have velvety smooth finish but not
highly polished or shiny finishThis will provide soft surface for the final seating of the valve which will occur during
the first few seconds of engine operationNOTE After servicing the valve seats, be sure to check the valve clearance after
the cylinder head has been reinstalledRefer to "Valve Clearance Inspection and Adjustment in Section 0B (Page 0B-4)" I827H1140076-01
Camshaft Journal Wear Determine whether each journal is worn down to the limit or not by measuring camshaft journal oil clearance
with the camshaft installedUse plastigauge to read the clearance, which is specified as followsSpecial tool0990022302 (Plastigauge