YZF73
Junior Member
Hey Everyone,
After participating in another thread concerning a failed radiator that had been jammed by debris, I decided to do some digging...
I thought it was a little strange that the fans were failing rather than their fuses blowing, so I checked the rating of the radiator fan fuse for the FZ6 and found it was 20A!!! To put this in perspective the rating for an '01 R6 is 7.5A, and 10A for a FZS1000.
I'm not going to accuse Yamaha of doing anything unscrupulous... instead I'll let you all come to your own conclusions. :thumbup:
Anyway, knowing this I decided to perform a test in order to find the minimum rating fuse that can be used for the fan circuit. Firstly, I fitted a 5A, which blew the instant the fan was switched on. Next I fitted a 7.5A, and after around 7-8 on/off cycles the fuse is still holding strong and doesn't seem to show any charring.
The fuse is located within the small fuse box behind the throttle side side pod.
From this, I can't yet confirm that a 7.5A fuse will last indefinitely (due to other variables that may increase the current demand of the fan motor). So, for now at least, I think it can be safely recommended that the fuse be replaced with one of a 10A rating, which is much more likely to protect the fan in the event that it become jammed.
Disclaimer: If you do decide to change your machines radiator fan fuse, please ensure that you monitor the operation of the fan and keep a keen eye on your engine temperature. Please treat the replacement as a test, providing yourself with the means to replace the fuse if it were to blow mid journey.
Over the next summer I'll monitor the operation of the fan on my bike, and report back as to whether the 7.5A fuse lasts.
Hopefully this may save someone some cash on a replacement fan. :rockon:
Yamahaboyz
After participating in another thread concerning a failed radiator that had been jammed by debris, I decided to do some digging...
I thought it was a little strange that the fans were failing rather than their fuses blowing, so I checked the rating of the radiator fan fuse for the FZ6 and found it was 20A!!! To put this in perspective the rating for an '01 R6 is 7.5A, and 10A for a FZS1000.
I'm not going to accuse Yamaha of doing anything unscrupulous... instead I'll let you all come to your own conclusions. :thumbup:
Anyway, knowing this I decided to perform a test in order to find the minimum rating fuse that can be used for the fan circuit. Firstly, I fitted a 5A, which blew the instant the fan was switched on. Next I fitted a 7.5A, and after around 7-8 on/off cycles the fuse is still holding strong and doesn't seem to show any charring.
The fuse is located within the small fuse box behind the throttle side side pod.
From this, I can't yet confirm that a 7.5A fuse will last indefinitely (due to other variables that may increase the current demand of the fan motor). So, for now at least, I think it can be safely recommended that the fuse be replaced with one of a 10A rating, which is much more likely to protect the fan in the event that it become jammed.
Disclaimer: If you do decide to change your machines radiator fan fuse, please ensure that you monitor the operation of the fan and keep a keen eye on your engine temperature. Please treat the replacement as a test, providing yourself with the means to replace the fuse if it were to blow mid journey.
Over the next summer I'll monitor the operation of the fan on my bike, and report back as to whether the 7.5A fuse lasts.
Hopefully this may save someone some cash on a replacement fan. :rockon:
Yamahaboyz
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