1996 Ski-Doo Shop Manual, Volume 1, Page 78Get this manual
Se ion EN GI Sub-Section 01 (247 AND 277 ENGINE TYPES)
TROUBLESHOOTING
Before completely disassemble engine, check airtightnessRefer to LEAK TEST AND ENGINE DIMENSION MEASUREMENT 04-03
277 Engine Type Remove the following then lift cylinder head and cylinder belt guard carburetor exhaust system spark plug oil injection inlet fan cowl and hood cable decompressor cable at cylinder cylinder head nuts and washers
NOTEThe following procedures can be done without removing the engine from chassis
TOP END REMOVAL (without removing engine from chassis)
247 Engine Type Remove the following then lift cylinder head and cylinder console pulley guards spark plug air duct muffler, connecting tube and exhaust socket spark plug cable clamp from fan cowl primer hose from carburetor untighten rubber flange collar then move carburetor steering column U-bolt at upper column and spirol pin, washer and short tie rod from bottom end air deflector and decompressor cable at cylinder 4 nuts retaining fan cowl and move it sideway until it is against the voltage regulator move steering column toward left to clear engine top end