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Makotosun

78 Yamaha gt80

  • Sneezles61
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78 Yamaha gt80 was created by Sneezles61

I’m not familiar with your bike, BUT.
There should be an oil line coming from the oil tank.
There should be a line leaving the pump, going to the carb or engine. That is the where you check the volume output.
Up in the tech library perhaps, you’ll find your bike and all the info for this procedure.
The following user(s) Liked this Post: Ht1kid
02 Sep 2025 17:37 #1

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Replied by Dugadie9 on topic 78 Yamaha gt80

It’s probably the thinner black hose just pull it off and start and idle the bike to see if it drips out?
02 Sep 2025 19:33 #2

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Replied by Sneezles61 on topic 78 Yamaha gt80

No.
Please get a manual to read. It will explain how to see if the pump is putting out the correct amount of oil, Either idling or running wide open. Per Yamaha’s engineers.
The following user(s) Liked this Post: pahiker
03 Sep 2025 13:31 #3

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