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chuckr
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VBMWMO #9187
Joined: 10/20/2016
Posts: 30

hi, my72 R75/5 will only start with the choke, even on a somewhat warm day. The bike is in good tune, valves adjusted, carbs set up well (float bowls correct), points gap good, timing good, plugs gapped and good - bike runs great.

After the bike is warm starts right up, no choke needed. Does this sound like normal behavior or am I missing something?

Thanks Chuck

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Chuck R
1972 R75/5, '69 2002, '82 528e
NY

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6327
I always use the choke on my

I always use the choke on my /7 to start, whether it's hot or cold out. I won't use the choke after a fuel stop given that things are fully warmed. I wouldn't be too concerned.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

chuckr
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VBMWMO #9187
Joined: 10/20/2016
Posts: 30
Thanks for quick reply Kurt.

Thanks for quick reply Kurt. I had a 73 Moto Guzzi Eldorado that I don't think I ever used the choke...anyway diff bike, thanks for your note.

Chuck

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Chuck R
1972 R75/5, '69 2002, '82 528e
NY

mackenzie7548
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VBMWMO #8276
Cape Town
Joined: 05/16/2009
Posts: 47
Hi Chuck I have the same

Hi Chuck

I have the same issue with my 1973 R 75/5. Takes time to start when cold. When it is warm it starts instantly. Fortunately the Panasonic battery installed has the stamina to kept that power hungry Bosch starter turning. When cold, I first put it in the sun to warm and kick over the engine a few times with the kick-starter. It is important to keep the bike well tuned with spark plugs in good condition.

jim in the north
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Joined: 04/20/2012
Posts: 26
Hard to Start Cold

My '83 R100RT can be very hard to start when temperature is below 50F or when it is damp. Instead of running the battery right down when it's obvious it isn't going to start, I hit it with a little shot of ether. Works every time. I know that this is not something that everyone will agree with but I keep the shots to one second or less and I've been doing it for 20 years. Hasn't hurt anything. Did a top end last year and everything looked good at 100,000 miles.

mark_weiss
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Arizona
Joined: 11/16/2013
Posts: 170
Is the bike actually hard to

Is the bike actually hard to start, or is the issue just that it needs the choke to be used? Even a 100 F day is not hot to an engine that normally runs at more than double that, choke use is normal, but the bike should start up readily.

If you raise the slide needles one notch (richer), you will decrease the need for the choke. Fuel consumption will probably increase a bit though.

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Mark
qualitycycleservice.com

jim in the north
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To lube or not to lube a new cable

I am going to change the clutch cable on my '83 R100RT. No problem with the cable, just 20 years old and 50K miles on it. Preventive maintenance. What is the advice from forum members on whether to lube the cable before installing it? If so, what lube do you recommend?

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
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I use OEM cables which I

I use OEM cables which I believe are lined cables...no lube is needed and would do more harm. But if I had some other cable, I'd probably use something like Tri-Flow.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

khittner
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VBMWMO #8223
Joined: 02/15/2012
Posts: 364
Just a dab of grease on the

Just a dab of grease on the cable end at the clutch fork is all that an OEM clutch cable needs. If the cable is hanging up somewhere along its length in the housing, the cable and housing have served as long as can be expected.

And, FWIW, a well-tuned airhead shouldn't need a shot of ether/starting fluid to get going at 50F---if it's worse when it's damp out, I'd suspect ignition/cable issues.

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Konrad

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