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Key safety warnings and precautions for operating and maintaining the scooter.
Comprehensive technical data, including dimensions, weight, and engine specifications.
Instructions for checking engine oil level and performing an oil change.
Steps for checking and changing the final reduction oil.
Detailed maintenance schedules for different model years ('85, '86, After '87).
Steps for checking spark plugs, valve clearance, ignition timing, and cylinder compression.
Instructions for checking brake shoe wear and the overall brake system.
Detailed steps for removing and installing the scooter's carburetor.
Detailed steps for safely removing the engine from the scooter frame.
Steps for correctly installing the engine back into the scooter frame.
Common problems related to cylinder head and valves, and their potential causes.
Procedures for removing and disassembling the cylinder head.
Methods for inspecting and refacing valve seats for proper sealing.
Steps for assembling and installing the cylinder head and its components.
Steps for removing the cylinder and inspecting its bore and warpage.
Procedures for removing the piston and inspecting its condition.
Steps for installing the piston into the cylinder and assembling related parts.
Common problems related to drive and driven pulleys and their potential causes.
Steps for inspecting the drive belt and performing its installation.
Detailed steps for disassembling the final reduction gear assembly.
Procedures for inspecting drive shafts, bearings, and gears.
Instructions for assembling the final reduction gear system.
Detailed steps for separating the crankcase halves.
Procedures for inspecting crankshaft runout, bearing fit, and oil seals.
Steps for assembling the crankcase, including oil seals and gaskets.
Steps for inspecting the radiator cap and replacing the coolant.
Procedures for inspecting and servicing the front brake system.
Steps for inspecting, disassembling, and assembling the rear brake system.
Common problems and solutions for charging, ignition, and starting systems.
Diagnostic guide for engine starting issues, including fuel, spark, and compression checks.
Troubleshooting steps for poor engine performance at low and high speeds.
Identifying the causes of various engine noises like valve, piston, or crankshaft noise.
Troubleshooting poor brake performance, including squeaks and adjustments.
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