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Yamaha 50TLR Alarm At Idle

Old 09-12-2019, 01:50 PM
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Default Yamaha 50TLR Alarm At Idle

I have a 2011 Yamaha 50TLR. After about 3 minutes at idle I get a continuous alarm. Anything above idle it does not alarm. Looking around on THT the recommendation is to replace the "poppet" but I can't find one in the parts breakdown for this engine. Have replace thermostat thinking that was the problem. There is a nice stream from the tell tale. The alarm can be reset by restarting engine or running at fast idle for a few minutes. Anyone have any suggestions ? I'm at a loss.

Thanks,

Craig
Old 09-12-2019, 02:16 PM
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Originally Posted by EdistoRiverMan View Post
I have a 2011 Yamaha 50TLR. After about 3 minutes at idle I get a continuous alarm. Anything above idle it does not alarm. Looking around on THT the recommendation is to replace the "poppet" but I can't find one in the parts breakdown for this engine. Have replace thermostat thinking that was the problem. There is a nice stream from the tell tale. The alarm can be reset by restarting engine or running at fast idle for a few minutes. Anyone have any suggestions ? I'm at a loss.

Thanks,

Craig
Did Yamaha make a 50TLR in 2011? A US version?

Old 09-12-2019, 02:18 PM
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Despite the total lack of a poppet on these 3 cylinder carb'd Yamaha's it is commonly recommended around here to replace them. There are only two alarms, oil and overheat. You need to figure out which you're getting first of all. If you have an infrared thermometer shoot the head with it and make sure it's sitting around 130 degrees or so when this problem is happening. If you don't have one, put your hand on the head in various spots. If it's too hot to hold there for more than a few seconds then its probably overheating. Replace thermostat and impeller and housing if so. If it's an oil alarm it could be a faulty oil level sensor but it would be weird for that alarm to come and go with throttle.
Old 09-12-2019, 02:30 PM
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Yamaha did not sell a "50TLR" - a carb'ed 2-stroke - in the USA after 2009.

However, in 2011, they did sell an EFI 4-stroke "F50TLR"

It would be nice to know which the OP has.
Old 09-12-2019, 02:33 PM
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Originally Posted by Jim311 View Post
Despite the total lack of a poppet on these 3 cylinder carb'd Yamaha's it is commonly recommended around here to replace them. There are only two alarms, oil and overheat. You need to figure out which you're getting first of all. If you have an infrared thermometer shoot the head with it and make sure it's sitting around 130 degrees or so when this problem is happening. If you don't have one, put your hand on the head in various spots. If it's too hot to hold there for more than a few seconds then its probably overheating. Replace thermostat and impeller and housing if so. If it's an oil alarm it could be a faulty oil level sensor but it would be weird for that alarm to come and go with throttle.
Especially in a 2011 engine.

Old 09-12-2019, 02:50 PM
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Yes, It is a F50TLR. Doing this from memory. You guys are sharp !

I have changed the thermostat. The alarm comes on after a few minutes at idle. Goes out after a few minutes when RPM above idle.

Thanks for your help !

Craig



Originally Posted by Fwpratt View Post
Yamaha did not sell a "50TLR" - a carb'ed 2-stroke - in the USA after 2009.

However, in 2011, they did sell an EFI 4-stroke "F50TLR"

It would be nice to know which the OP has.
Old 09-12-2019, 05:39 PM
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