Random Thoughts - Part Deux [NO POLITICS]

[NoHaveMSG]

Originally Posted by Tcoat

Or they haven't dried up and disintegrated. Thus the need for a rebuild kit. If it has been sitting dry for 3 years the rubber/plastic/fiber innards are all toast.

Yeah, the ethanol in fuel is really hard on the rubber and plastic in the old carbs. I'm hoping for the best for him, I can't imagine parts are easy to come by for that thing.

[qcbaker]

Like I said, rebuild kit is almost certainly in the future. But, as someone with no experience, you can see why this task seems a bit daunting to me:

https://bmwmotorcycletech.info/bingcv.htm
https://bmwmotorcycletech.info/bingcv-2.htm

[NoHaveMSG]

Originally Posted by qcbaker

Like I said, rebuild kit is almost certainly in the future. But, as someone with no experience, you can see why this task seems a bit daunting to me:

https://bmwmotorcycletech.info/bingcv.htm
https://bmwmotorcycletech.info/bingcv-2.htm

Aside from layout and metering circuits this will get you started. They are all the same in principle.

https://thelawnforum.com/viewtopic.php?t=1618

[Tcoat]

Originally Posted by qcbaker

Like I said, rebuild kit is almost certainly in the future. But, as someone with no experience, you can see why this task seems a bit daunting to me:

https://bmwmotorcycletech.info/bingcv.htm
https://bmwmotorcycletech.info/bingcv-2.htm

I have seen worse. Don't let it intimidate you. It will be easier than it looks.

[Ultramaroon]

Originally Posted by NoHaveMSG

Aside from layout and metering circuits this will get you started. They are all the same in principle.

https://thelawnforum.com/viewtopic.php?t=1618

Nice tip sheet.

[Ultramaroon]

Carbs are super easy until you start tweaking jetting, especially if the only diagnostic tools are your nose and reading spark plugs.

[EAGLE5]

Originally Posted by Leonardo

This one won't depreciate that much, it's easy to park, and is electric.

OMG! Used powerwheels are totally a buyer's market. U H@V N0 1D3@!

[ScoobsMcGee]

Originally Posted by Spuds

That is scarily easy to look up. Must look into using a VPN...

I mean... if you really want me to ramble on for a bit, I can.

[ScoobsMcGee]

Originally Posted by qcbaker

Like I said, rebuild kit is almost certainly in the future. But, as someone with no experience, you can see why this task seems a bit daunting to me:

https://bmwmotorcycletech.info/bingcv.htm
https://bmwmotorcycletech.info/bingcv-2.htm

Psst, YouTube. (apologies for back to back posts)

[ame]https://www.youtube.com/watch?v=F4_C5B-SjFo[/ame]

[Tcoat]

Originally Posted by Ultramaroon

Carbs are super easy until you start tweaking jetting, especially if the only diagnostic tools are your nose and reading spark plugs.

Hundreds of hours of my life!

[NoHaveMSG]

Originally Posted by Ultramaroon

Nice tip sheet.

Saves me a lot of time on the phone

[humfrz]

Originally Posted by qcbaker

Not that it changes anything, but its a motorcycle not a car lol. Anyway, my dad is planning on getting a rebuild kit, I am just super nervous about it because I have no experience rebuilding carbs and I feel like possibly gunked up, 40 year old carbs where all the labels and info are in German is a less than ideal starting point lol.

Basically, the only thing I really know regarding wrenching on this thing is that "nicht überfüllen" probably means "do not overfill".

Actually, rebuilding any carburetor is not difficult if you pay attention when you take it apart. Just disassemble till there is nothing else to take apart while laying all the parts out in order that they came off. Open the carburetor kit box/bag and replace all the old parts that you have new parts for. Clean up all parts. Put it back together in the reverse order that it came apart.

Plan B. Take it into a motorcycle shop and ask them to rebuild it -


humfrz

[Tcoat]

Originally Posted by NoHaveMSG

Yeah, the ethanol in fuel is really hard on the rubber and plastic in the old carbs. I'm hoping for the best for him, I can't imagine parts are easy to come by for that thing.

Yes ethanol is bad for old parts but many of the carbs I had to rebuild were well before ethanol was ever used. Parts that are meant to be soaked in fuel all the time will break down pretty quick when exposed to air. Diaphragms are especially sensitive to both ethanol and good old oxygen. They tend to either get all droopy or turn as hard as a rock. Sometimes both!

[Tcoat]

Originally Posted by humfrz

Actually, rebuilding any carburetor is not difficult if you pay attention when you take it apart. Just disassemble till there is nothing else to take apart while laying all the parts out in order that they came off. Open the carburetor kit box/bag and replace all the old parts that you have new parts for. Clean up all parts. Put it back together in the reverse order that it came apart.

Plan B. Take it into a motorcycle shop and ask them to rebuild it -


humfrz

Not sure how we ever managed to fix anything without a step by step manual and a YouTube video to follow! Although in fairness I guess a lot of the old stuff was easy to figure out and hard to screw up.