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I have noticed that the original clamps to secure the intake rubbers on the manifolds might not tighten enough after 40 years.
I replaced them for nice looking rostfree clamps ...
Hi folksI am still having running issues and sure it’s a carb issue. Bike starts fine and idles smoothly but then feels like fuel starvation on the road.Seems to run ok with full choke on but than as soon as I come to a stop she stops, I think due to too much choke.Close choke restart one off ok again but then feels like it’s fuel starved and has no power.I have adjusted the idle screws but makes no real difference and float levels are ok.On reflection these carbs have never been right and I am seriously thinking of sending them to Gerben for a full overhaul or trade in for one of his refurbished sets.That said it’s a big expenditure and just wondereda) are his carbs usually spot on b) am I wasting my moneyc) Any bright other ideas
I got mine refurbished by Gerben for the 400/4 I had overflow issues and inability to reach top revs, they arrived back and went straight on and without any adjustment the bike was 100% better, I synced them with a set of vacuum gauges and they required only minor adjustment. Bergen had to replace the four slides and float bowls.For me it was worth every penny
I noticed that (after I've bought several used sets on ebay) those rubbers between the carb and head were a bit loose.Every one of them. I didn't pay attention to it first but after putting on the original clamps I noticed that when I would tighten them till maximum (those 2 stops hit each other) there was still play.Naturally after putting the rubbers on and pulling them off again in the last 40 years they were not as tight as they should be.So I have bought these:https://www.ebay.de/itm/Schlauchschellen-Edelstahl-V2A-mit-Schneckengewinde-DIN-3017-W2-von-8mm-180mm/253264148517?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649quite cheap I think 8,90 and free shipment in Germany for 10 - and they look good too.With those clamps I could get te rubbers on much tighter. Or actually as tight as they needed to be.Since then I am advising everyone to get rid of those original ones.Of course they are not original. That might be a nono for many. But the bike preforms really well with those.I am going tho replace them on my 750 as well..