Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: Davelu88 on July 26, 2018, 03:41:09 PM

Title: 400/4 Jumping out of gear
Post by: Davelu88 on July 26, 2018, 03:41:09 PM
400/4 jumping out of 1st gear back into neutral, don't do it in other gears, I have adjusted clutch  by the manual to the best of my ability which isn't much!! but no joy, any help greatly appreciated.
Title: Re: 400/4 Jumping out of gear
Post by: ka-ja on July 26, 2018, 07:59:33 PM
Worst scenario is the dogs or slots on the gears have worn to slight tapers, but 1st gear might not be fully engaged, I would take a look at the selector mechanism if the fault persists
Title: Re: 400/4 Jumping out of gear
Post by: Davelu88 on July 26, 2018, 08:24:58 PM
Many Thanks
Title: Re: 400/4 Jumping out of gear
Post by: Bryanj on July 27, 2018, 07:17:35 AM
40 was the best box and rarely gave trouble, is the gearlever movement blocked or lever bent>
Title: Re: 400/4 Jumping out of gear
Post by: Davelu88 on July 27, 2018, 08:38:21 AM
Not to my knowledge , it was ok then the other day was jumping out of 1st when pulling away , I had to adjust the clutch as had a bit of slippage and that seems a bit better but gear still jumps
Title: Re: 400/4 Jumping out of gear
Post by: Bryanj on July 27, 2018, 12:39:59 PM
Very unusual, you need to check the change/detent mechanism behind the clutch. Do it soon as if it is the detent it will wear all the gear dogs
Title: Re: 400/4 Jumping out of gear
Post by: Davelu88 on July 27, 2018, 04:29:37 PM
Engines coming out for a rebuild soon , so will stop riding it until sorted , thanks for info
Title: Re: 400/4 Jumping out of gear
Post by: Nurse Julie on July 27, 2018, 04:37:43 PM
👍👍👍
Title: Re: 400/4 Jumping out of gear
Post by: Davelu88 on July 27, 2018, 05:35:09 PM
In fact I took it out today in anticipation lol
Title: Re: 400/4 Jumping out of gear
Post by: Athame57 on August 01, 2018, 02:55:08 PM
I had this sort of problem for a few weeks recently, 1st gear would only engage and stay so if the engine was still cold after which it was lost. I messed with the clutch no end and worried about needing to split the crank. I had this trouble as soon as I bought her so I had the hump with the seller, an online classic bikes seller.
Then a hunch and I discovered all I ever had to do was adjust the gear change lever a few millimeters! Works fine now.
Title: Re: 400/4 Jumping out of gear
Post by: Davelu88 on August 01, 2018, 03:38:36 PM
Thanks for that , i have now taken the engine out as its getting a rebuild soon , but as i was coming to undo the gear linkage i noticed it was loose but then i had the (had i or hadnt i just undone that thought ) so im hoping it was just a loose gear linkage. ;D
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