seagull recoil start

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woodcipper2006
Posts: 6
Joined: Sat Apr 07, 2012 5:35 pm
Location: Eastbourne

seagull recoil start

Post by woodcipper2006 »

Hello,
just wondered if anyone can help. I recently purchased an old seagull engine fitted with a recoil start that doesn't work.
the recoil works perfectly and operates two small steel arms that 'fly' out when the cord is pulled,but don't engage with the inside of the aluminium sleeve that is also the emergency cord wrap around. there doesn't seam to be any signs excessive wear to the inside of the sleeve. any advice would be very much appreciated.
Regards John.
electrosys
Posts: 130
Joined: Wed Sep 14, 2011 3:08 pm
Location: Boston, UK

Re: seagull recoil start

Post by electrosys »

One thing worth checking for is whether the 2 cork friction discs (one either side of the clutch 'spring' assembly) have disintegrated. If they have, then there will still be enough drag to push the 'arms' out, but not with enough strength to hold them hard against the aluminium tube.
I found this fault on one recoil retro-fit and, after cleaning each cork disk in acetone, simply glued them onto either side of the clutch assembly with a tiny dab of 5-minute Araldite as a 'field-fix'. It still works ok, so I haven't bothered with a 'proper' repair - but then, I always carry two engines ....
woodcipper2006
Posts: 6
Joined: Sat Apr 07, 2012 5:35 pm
Location: Eastbourne

Re: seagull recoil start

Post by woodcipper2006 »

Hello Electrosys,
Many tanks for taking the trouble to respond,I think you've solved the problem!- no cork I'll have to investigate the spares availability. once again Many thanks,Regards John.
electrosys
Posts: 130
Joined: Wed Sep 14, 2011 3:08 pm
Location: Boston, UK

Re: seagull recoil start

Post by electrosys »

Hello John - just in case you have any difficulty in obtaining replacements, you could always make your own ?
I've just pulled a Siba unit apart (it was a tad 'stiff' and needed looking at anyway), and it's friction washers are 1.5mm thick, so they may have started life around 2mm thick ?
They have an ID of 10mm and an OD of 17mm. None of these measurements appear critical, and +/- 1mm should still work ok.

For sources: cork of this thickness is often used as engineering gasket material - that's probably the best bet.
Ebay #260997344793 might be ok - but they don't give any diameters !
#270946348654 or #220837490690 might also be worth considering.

I don't know whether these washers are meant to 'float' in the recoil mechanism or not, but I'd still be inclined to glue 'em to the clutch arm/spring mechanism plate, to give 'em extra support and help avoid them breaking-up.

Good luck, Colin
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