Waking Donna; a '75 GL1000

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pidjones
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Re: Waking Donna; a '75 GL1000

#196

Post by pidjones »

Bravo! Soon to terrorize the island!
"Love 'em all.... let God sort 'em out!"
1976 Yamaha RD400c - rolling basket case winter '20-'21 project
1978 GL1000 - winter project for 2020 challenge - SOLD!
2006 GL1800 - the Black Pearl
1979 GL1000 project - to be restored
1978 GL1000 with '75 engine - the Hunley
Ex '79 CB750F rat bike - the Rocket - SOLD!
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
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Chainman
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Re: Waking Donna; a '75 GL1000

#197

Post by Chainman »

Hey Y'all,

I have a question about something peculiar that happens when I crank the starter.

She will spin like a top with no throttle, and likewise with the choke pulled, but when the throttle is opened, the starter labors to turn over the engine. The more open the throttle, the more the starter labors. What causes that?
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Track T 2411
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Re: Waking Donna; a '75 GL1000

#198

Post by Track T 2411 »

I would surmise more airflow =more compression...
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Chainman
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Re: Waking Donna; a '75 GL1000

#199

Post by Chainman »

Ups and downs.

Today's down is the starter clutch won't engage.

I went to start it yesterday and it fired with a horrendous clatter and shut down immediately. Since then, the starter clutch won't engage. I have turned the engine with the stator bolt, so there's that. I should note that there is a "rubber squeak" as the engine approaches compression; it's quiet, but it's there. I don't know where it's coming from (or if important);maybe the right timing belt.

Regarding the starter clutch, is my only option to remove the engine and service/replace the starter clutch?

I thought I would run this by the forum before I start taking things apart (again).
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CYBORG
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Re: Waking Donna; a '75 GL1000

#200

Post by CYBORG »

Often the starter clutch spins without engaging the engine 9f the oil is dirty, to heavy , or the outside temp is a bit cool and the bike has been sitting a while without starting. Or all of the above. I would try a few other things before pilling the engine.
1978 custom GL1000
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Jonesz
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Re: Waking Donna; a '75 GL1000

#201

Post by Jonesz »

Yep like Cyborg says and if it were mine would add a half can of Seafoam to the oil and bump start the engine. Then I would let it run for quite awhile at moderate speeds then would shut it down and try the starter. It may well be that the sprag clutch is full of sludge etc. If it showed some improvement I would then ride the bike for a hundred miles or so being very gentle on the throttle. Would then do an oil change and hope for the best. Worth trying before pulling the engine IMHO.
Jonesz

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Chainman
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Re: Waking Donna; a '75 GL1000

#202

Post by Chainman »

Thank you for your replies fellows.
So... no big giant hammers, huh?
I'll move forward with the brake rebuilds, I'm gonna need them for the bump start.
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pidjones
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Re: Waking Donna; a '75 GL1000

#203

Post by pidjones »

My '78 rescue's starter would only engage maybe one out of ten or more tries at first. Changed the oil and replaced one quart with a quart of Marvel Mystery Oil. Parked it on a hill so that the oil could reach the clutch (high in the back). Then tried until it started and let it idle a while and then rode it. Then it was one in four tries to engage. Moire riding and it became reliable every time. Drained the oil again and refilled my normal 15W40 diesel oil.
"Love 'em all.... let God sort 'em out!"
1976 Yamaha RD400c - rolling basket case winter '20-'21 project
1978 GL1000 - winter project for 2020 challenge - SOLD!
2006 GL1800 - the Black Pearl
1979 GL1000 project - to be restored
1978 GL1000 with '75 engine - the Hunley
Ex '79 CB750F rat bike - the Rocket - SOLD!
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
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Re: Waking Donna; a '75 GL1000

#204

Post by Rat »

Yeah ... it’s hard to get oil up to the starter clutch ... speed bumps help ... but you have to go fast ...

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Chainman
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Re: Waking Donna; a '75 GL1000

#205

Post by Chainman »

I know , I know, I've already gotten my answer, but, I just can't leave it alone :-D .

I changed the oil to 10w40 including one quart of MMO and tilted the front of the bike up about 30 degrees. Then tried the starter a couple of dozen times thinking oil might get slung up to the starter clutch by the chain. Nah.

Is that even possible?

The sound of the starter was such that I thought for sure that the chain was broken; no chain sounds at all. So I pulled the starter to take a look. Nope, still there. While the starter was out I tried turning the lower sprocket with my finger; to the left it engages, to the right of spins freely. Then I turned the stator bolt; normal direction the starter sprocket remains still, backwards the sprocket spins. So great, I think it's fixed itself! Put the starter back on and...nothing. Any thoughts?

Back to plan A I guess. She'll have to wait for the bump start. :(


...but, what if I made my own kick start lever...hmmm
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pidjones
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Re: Waking Donna; a '75 GL1000

#206

Post by pidjones »

You can also over-fill by a quart or two even as long as you don't run it overfilled. Are you certain the planetary gears in the starter are Ok?
"Love 'em all.... let God sort 'em out!"
1976 Yamaha RD400c - rolling basket case winter '20-'21 project
1978 GL1000 - winter project for 2020 challenge - SOLD!
2006 GL1800 - the Black Pearl
1979 GL1000 project - to be restored
1978 GL1000 with '75 engine - the Hunley
Ex '79 CB750F rat bike - the Rocket - SOLD!
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
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Chainman
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Re: Waking Donna; a '75 GL1000

#207

Post by Chainman »

Ok on the overfill.
I'll take the starter off(I'm getting good at that) and have a look inside.
Thanks!
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Chainman
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Re: Waking Donna; a '75 GL1000

#208

Post by Chainman »

It just occurred to me that I bench tested the starter during this latest episode and it spins just fine :( .

I will give the over-fill a try.
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