2015-2020 Yamaha XC155 Scooters 990145 Missing Primary Sheave Nut May Cause Engine Stall

2020 Yamaha XC155

April 9, 2021 NHTSA CAMPAIGN NUMBER: 21V251000 Missing Primary Sheave Nut May Cause Engine Stall A missing primary sheave nut may cause a stall, without the ability to restart the engine, increasing the risk of a crash.   NHTSA Campaign Number: 21V251 Manufacturer Yamaha Motor Corporation, USA Components ENGINE Potential Number of Units Affected 4,262   Summary Yamaha Motor Corporation, …

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990137 – Insufficiently Tightened Cylinder Head Nuts – 2015-2018 Yamaha XC155 Scooters

2018 Yamaha XC155

May 15, 2020 NHTSA CAMPAIGN NUMBER: 20V277000 Insufficiently Tightened Cylinder Head Nuts A fouled spark plug could cause the engine to stall at idle and possibly not restart, increasing the risk of a crash.   NHTSA Campaign Number: 20V277 Manufacturer Yamaha Motor Corporation, USA Components ENGINE AND ENGINE COOLING Potential Number of Units Affected 3,116   Summary Yamaha Motor Corporation, …

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