Starter motor noise on starting

Uncle Bob · Post by **Uncle Bob** » Tue Apr 25, 2023 8:18 pm

Something new for this year on the 400...! Advice needed

When I go to start the 400, sometimes just after it starts, it makes a strange noise (not everytime) from the starter motor area.
Is this the actual motor or the starter gears etc?

I got it on video so you can hear it...
https://www.youtube.com/watch?v=I7OPxo_Cc88

UB

Smallkat · Post by **Smallkat** » Wed Apr 26, 2023 1:24 pm

Must be something to do with the starter clutch. I bet JohnD has had his apart and may be able to advise. Maybe one of the weights isn't returning properly. New kits are quite cheap.

johnr · Post by **johnr** » Wed Apr 26, 2023 8:03 pm

sounds like the starter clutch just holding on for a fraction of a second.

Uncle Bob · Post by **Uncle Bob** » Thu Apr 27, 2023 8:00 pm

Thanks for the diagnosis, now you've said it and I've looked at how it works, that sounds spot on!

I've bought the puller tool to get the signal plate off. I saw this repair kit:
https://www.motorcycleproducts.co.uk/to ... bike=25590

I might give that a try as I should be able to get it for Saturday and hopefully sort it all out over the weekend an d give it an oil change and filter at the same time.

Cheers

Rob

Smallkat · Post by **Smallkat** » Fri Apr 28, 2023 4:46 pm

Tourmax is normally good quality stuff. Often made in Japan by the OEM.

johnD · Post by **johnD** » Thu May 18, 2023 5:45 pm

Hi all
Been away cooking in the sun so missed the latest posts. Yes, thats one of the rollers not returning in the sprag clutch. The sprag is mounted to the timing disk on a taper to the crank. I just heated up the general area of the crank and used two large scewdrivers as a wedge behind the clutch unit. Dont need to get Medieval a few taps had mine released. If you need a good unit I have one.
Cheers.

Smallkat · Post by **Smallkat** » Fri May 19, 2023 12:24 pm

Okay, don't keep rubbing it in for us that haven't left these shores!

Uncle Bob · Post by **Uncle Bob** » Fri May 19, 2023 9:49 pm

johnD wrote: ↑
Thu May 18, 2023 5:45 pm
Hi all
Been away cooking in the sun so missed the latest posts. Yes, thats one of the rollers not returning in the sprag clutch. The sprag is mounted to the timing disk on a taper to the crank. I just heated up the general area of the crank and used two large scewdrivers as a wedge behind the clutch unit. Dont need to get Medieval a few taps had mine released. If you need a good unit I have one.
Cheers.

I bought a puller for about £24ish in the end to save my screwdrivers! I've replaced the rollers, springs etc and it still makes that noise on starting unfortunately, not sure what to do know, probably leave it until something packs up!...

UB

Smallkat · Post by **Smallkat** » Sat May 20, 2023 1:17 pm

Oh, that's a bit crap.

How is that assembly lubricated?

Uncle Bob · Post by **Uncle Bob** » Sat May 20, 2023 5:58 pm

Smallkat wrote: ↑
Sat May 20, 2023 1:17 pm
Oh, that's a bit crap.
How is that assembly lubricated?

With the engine oil, all looked OK as far as I could see, even the old bits looked good.

Katana Owners Club U.K.

Starter motor noise on starting

Starter motor noise on starting

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