1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 176Get this manual
166 cRotate the head several times to avoid removing too much material from one sideCheck progress often with the straightedge and feeler gauge (Figure 39)dIf the cylinder head warpage still exceeds the service limit, it will be necessary to have the head resurfaced by machine shop familiar with snowmobile and motorcycle serviceNote that removing material from the cylinder head mating surface will change the compression ratio and clearance of the squish area around the outside edge5On liquid-cooled engines, check the cylinder head water passages for coolant residueClean the passages thoroughly6Wash the cylinder head in hot soap and water and rinse thoroughly before installation
CHAPTER FIVE
bOn engines with Y-type exhaust manifold, unbolt and remove the manifold from both cylinders3On all engines with carburetors or fuel injection attached to the cylinders, remove the carburetors as described in Chapter Six or the EFI unit as described in Chapter Seven4Detach the oil injection line near the intake port from each of the cylinders and plug the lines5On 529 cc engines, remove the two flange nuts securing the cylinder on the intake sideNOTE