Connecting Rods and Pistons/Pistons and Connecting Rods 12. Clean carbon from cylinder bore using a wire brush. 13. Before piston removal, check cylinder bore for ridges. The ridges can cause damage to piston or rings if ridge is not removed. 14. If necessary, remove ridge from top of cylinder bore using a ridge reamer. M36387 -UN-29JAN90 M98,2030K,18 -19-09OCT85 CTM2 (19APR90) 30-11 16, 18, 20 & 24HP Onan Engines AllTractorManuals.com 130495 IMPORTANT: Do not remove cylinder heads while they are hot. Cylinder head may warp. A hot gasket will be soft and difficult to remove. 11. Remove nine cap screws to remove cylinder head -UN-29JAN90 and gasket (A).
Remove 10 nuts, 20 compression washers (A), and ten washers (B) to remove cylinder head and gasket (C). M36385 B43E,B43G,B48G,P21G and P220G -UN-29JAN90 M36386 T260 Engine M98,2030K,17 -19-02FEB87 30 11