Hondanut

Hello everyone. I just joined and look forward to offering my experiences tricks and ideas. Also hoping to pick up new tricks, connections for parts etc. Cheers! I have bought restored and sold ( not all) approximately 60 Honda’s in the last 5 years. 250cc-450cc few Hondamatic Ats , love my 300s .

I just joined and noticed the 400AT issue. I just redid one I bought for cheap as it would barely move in esp and not at all in Auto. I’ll be brief here. With any 400 AT’s. First check oil pressure in front cover if oil pressure is good then Hondamatic is likely fine. Leaving them in D while idling over years of use , ever so slowly burns out the centrifugal clutch shoes. “Ecu” update tried to correct this. 1 check oil pressure if ok then 2 pull front engine cover and inspect clutch weights and springs. 3 friction material worn to steel then will slip on clutch drum symptoms: high revs to move , speed sensor to throttle position sensor codes, rider could state: works better in esp then auto.... fix : replace clutch shoe weights , springs , coloured oil pressure springs in front cover and approximately the 5 o rings in front cover you disturbed getting to clutch. Put back together, install Honda oil or oil that is JASO certified wet clutch oil and it should work like new. Will need throttle position sensor relearn after assembly. Just wanted to say what I did incase someone else has the same issue.