1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 177Get this manual
CAUTION Do not rest the weight of the cylinder on the reed valve assembly located at the bottom ofthe cylinder on 529 cc engines
4Clean all gasket residue from the exhaust manifold sealing area of the cylinderCAUTION When cleaning the exhaust port in Step 5, do not allow the wire brush or scraper to slip inside the cylinder and damage the cylinder boreBe especially careful when using power equipment, such as rotating wire brush in an electric drill