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2-77 2 CM220 10. Connect the two coolant hoses on the cylinders beneath the exhaust ports; then install the coolant hose and breather hose onto the cylinder head. CM214A 11. Install the exhaust manifold. Tighten in a criss- cross pattern to 15 ft-lb. 12. Install the expansion chamber and resonator using existing hardware. 13. Install the side-plate brace and secure with the cap screw (coated with blue Loctite # 243). Tighten securely. 14. Secure the steering support to the chassis. Tighten to 20 ft-lb. 15. Fill the cooling system with recommended coolant (see Liquid Cooling System in Section 3). Cleaning and Inspecting Engine NOTE: Whenever a part is worn excessively, CYLINDER HEAD 1. Using a non-metallic carbon removal tool, remove any carbon buildup from the combustion chambers being careful not to nick, scrape, or damage the combustion chambers or the sealing surfaces. 2. Inspect the spark-plug holes for any damaged threads. 3. Inspect the cylinder head for flatness using a straightedge and a feeler gauge. Acceptable warpage must not exceed 0.05 mm (0.002 in.). NOTE: If the warpage exceeds specification, FS270 4. Place the cylinder heads on a Surface Plate cov- ered with #400 grit wet-or-dry sandpaper. Using light pressure, move each cylinder head in a figure eight motion. Inspect the sealing surface for any indication of high spots. A high spot can be noted by a bright metallic finish. Correct any high spots before assembly by continuing to move the cylin- der head in a figure eight motion until a uniform bright metallic finish is attained. CM018 ! CAUTION When servicing Top-Side Components if any major ! CAUTION Water or parts-cleaning solvent must be used in |