2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 361Get this manual
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TRBL SHTG CHAPTER 10TROUBLESHOOTING
STARTING FAILUREHARD STARTING 10-1 FUEL SYSTEM 10-1 ELECTRICAL SYSTEM 10-1 COMPRESSION SYSTEM 10-2 POOR IDLE SPEED PERFORMANCE .10-2 POOR IDLE SPEED PERFORMAN