Message Board - Machinery: sisis trio

Anybody any ideas how to fix my Sisis Trio scarifier? Starts fine and then runs for about 20 to 30 metres then cuts out and won't start again. Leave it for about 3 or 4 minutes then it starts again and runs for about another 20 or 30 metres and so on.

Does it just cut out or splutter and stop?
My first point of call would be to check filters - especially air. Check any cooling fins are ckear.

splutter and stop

Check the fuel filter within the fuel tap.

Just a thought .Sounds like no air getting into petrol tank Peter and creating a vacuume as petrol gets used. Check that there is an airway into top of tank.?????????????

Chris

Thanks for replies.

I have tried it even with no air filter in. No difference.

I have tried it without the petrol cap on. No difference.

I did think about the filter in the tap. It is a plastic bowl with a square bit at the bottom but I can't get it off. Any ideas?

Peter

Not really. If it's difficult coming off, does this mean it hasn't been serviced in a while?

My memory is telling me that it's a square of about 12mm.

If a spanner is slipping on it you may have to - VERY carefully - use something like vice grips to gently tease it off. Most probably the bowl will be sticking on the neoprene o-ring under which is to be found a disc-like metal gauze filter.

Good luck!

Hi Peter, here's my twopennyworth and no offence if you've tried it already : remove the entire fuel pipe, filter and tap and replace with a straight run of new tube from tank to carb. If it runs ok then that's your problem. With the filter now off the machine, stick it on the bench and dismantle the entire setup and spray it all through thoroughly with carb cleaner. McGaffs will always supply a new tap and filter if not. Once it's dry and clean, reassemble and replace. To make the fuel pipe complient I always use plenty of boiling water and soften it but you'll know this already. We had a similar problem with our outfield mower a month ago and the filter and valve was only one of several problems.

Any update on your problem, Peter?

Has the engine got an automatic cut off that activates if the sump oil level is low?

managed to get the plastic bowl off the tap with pliers the filter was **** up once I cleaned it and put it back on it ran perfectley, thanks for all replies
Peter

Cheques in the post, of course??!!

Good result all round, if you ever want to sell it Peter let me know !