I just picked up a 75 GPX433G and it has a dual head temp gauge that the sensors are like washers on the spark plugs. Not sure if it is stock or not. Does anyone have any idea of what a normal operating temp for this set up? Mine was running around 120-140C, 250-300F.
GPX433 operating head temp?
- Thread starter mobetta
- Start date
Yamaha Nutz
New member
I do not know for sure on head temp but the sensors were added they are not stock .......but the temps you say do not seem to be too high ....more important is to see what the plugs are showing you .....these motors do run hot and need to keep a eye on them