Yamaha scooter factory defect?

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alx123
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Yamaha scooter factory defect?

Post by alx123 »

Heard some problems about Yamaha scooters' crankcase cracking. These are low mileage stock scooters. Could it be a factory defect? Any theories?

Model affected is the Nmax 155 and the Aerox 155.

Saw one case in Philippines and another one in Thailand.
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homie
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Re: Yamaha scooter factory defect?

Post by homie »

Oh that's pathetic, who's working engineering over at Yamaha.
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Re: Yamaha scooter factory defect?

Post by gn2 »

Could be down to abuse by the user.
Removing one of the shocks is a popular modification and could be the cause.
Also overloading, potholed/dirt roads/off-roading etc.
But probably just shit design or manufacture.
Yamaha not the only Thai builder with this problem, it also affected a number of the original PCX when the main stand lugs tore holes out the crankcase.
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Re: Yamaha scooter factory defect?

Post by djbass »

alx123, structural miscalculation engineers, too have facilitated the design of the crankcase. Carter has to be one of the most durable engine components. It can be destroyed only when an external strong impact.
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Re: Yamaha scooter factory defect?

Post by alx123 »

Let's just hope Yamaha figure this out soon. I would love to get an Nmax when I get back in Philippines, since the PCX was not being sold there.
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Re: Yamaha scooter factory defect?

Post by PCX150Rider »

Is that the same engine they use in the SMax?

Yamaha had scooters manufactured in Taiwan also. . .they were always spoken well of. :geek:
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