ST8 problems

[JCMLTD]

Hi all,

 

We have a slight issue with the st8, every time it receives a large vibration from max diameter feeding the machine shuts down.

I think I have pin pointed the problem to the key panel and changed the barrel and the connecting spades, but it still persists.

I can now tap the machine with a rubber mallet and the machine will cut out. 
any ideas will be greatly appreciated. I have attached a video. 
 

Thanks in advance 

 

 

[Mick Dempsey]

I had exactly the same problem back in 2016 (I think) with one of the first models.

They sent me some extra rubber dampers for the control box which was getting too much vibration, can’t believe they haven’t sorted that problem!

 

We replaced the  barrel a few times as well.

 

 

[Will C]

Our pcb had rattled lose in the control box (if I remember rightly) showing similar symptoms. Ours used to drop right down to idle and pick up again but only cut out completely a few times. 

[JCMLTD]

Thanks, ill make sure the control box is tight. but checked the wire looms and PCB today and all seems tight, no worn wires ect 😑

[Jase hutch]

Can't you contact Forst for advice ?

[Will C]

1 hour ago, Jase hutch said:

Can't you contact Forst for advice ?

Yes, to be fair they used to be quite good if you got lucky who was on the fone. Bit of a lottery on that tho, one or two in service were very good, the rest not so much. This may all of changed tho as it’s best part of 2 years since we owned one and I wouldn’t want to put them down unfairly.

[JCMLTD]

Yes tried forst tech, they said change the key barrel 

[GarethM]

Is it a 14644 key ?.

 

I ask as I fitted a new ignition switch to a hatz control box the other year and it was a cheap aftermarket, utter garbage that hates water unlike the original.