I am planning on buying a 1976 Honda Cub 90 motorcycle. Apparently its only problem is that its carburettor leaks petrol. How difficult would that be to repair? I know nothing about motorcycles - would I have to get it serviced? And if so, how much would that be?
2007-12-18 04:00:37 · 11 answers · asked by Anonymous in Cars & Transportation ➔ Motorcycles
Mr X, I'm afraid that's all I know.
2007-12-18 04:09:12 · update #1
I have bought it, so now I must solve the problem.
2007-12-18 19:56:17 · update #2
First, get a service manual for your bike.
This manual will have instructions about how to disassemble and rebuild your carburettor.
Carburettors can leak many places.
The most common isn't actually a leak, but rather an overflow. The float valve gets stuck open and petrol is continually fed to the carburettor's bowl and out the overflow drain.
The second most common is the bowl gasket.
Determine exactly where the leak is coming from (this may be difficult), and proceed from there.
2007-12-18 04:55:31 · answer #1 · answered by Wyoming Rider 6 · 4⤊ 1⤋
Should be simple to fix if you are a competant mechanic, get a gasket set and strip the thing, replacing gaskets as you go.
Look out for holed float, if one is fitted, and worn needles and or valves, each of which would give excess petrol at the carb.
1976 machine will probably want new petrol pipe anyway so it's worth replacing this - don't use anything but proper reinforced petrol hose!
2007-12-18 04:11:40 · answer #2 · answered by norm c 3 · 1⤊ 1⤋
great bike for a start Ive owned one and it was indestructible. OK what you need to do is take the carb off clean it out. when you take the bottom of the carb off you should see some floats these only let a certain amount of petrol in. in you case they are letting too much petrol in. you should see a little valve attached to them all you need to do is bend the little metal plate downwards slightly that is attached to the valve and that should solve your problem.
2007-12-19 13:01:44 · answer #3 · answered by Darren R 2 · 0⤊ 0⤋
most carb leaks are either float related or float bowl gasket, remove the carb yourself and take it to a shop and have them rebuild it or if you have some mechanical ni how get a shop manual and rebuild kit and do it yourself. about 50 dollars in a shop about half that if you do it.
2007-12-18 05:49:24 · answer #4 · answered by Anonymous · 1⤊ 1⤋
Piece of p!ss. Get yourself a manual, a tin of carb cleaner and a carb gasket/seal kit off ebay and you're away.
2007-12-19 07:11:54 · answer #5 · answered by Anonymous · 0⤊ 1⤋
The most common place for the carb to leak is the gasket between the top and bottom of the carb. Its dead easy to change and the spares are easy to get a hold of.
Ja,
2007-12-18 04:13:50 · answer #6 · answered by Anonymous · 1⤊ 1⤋
If you're mechanicaly inclined get a rebuild kit. about 20-30 bucks it comes with instructions, but you'll want a repair manual 20 bucks you'll need it with a 30 year old bike!
2007-12-18 15:22:17 · answer #7 · answered by JP 1 · 0⤊ 1⤋
Carburetors are black science. I've taken few apart in my life but in the end I ended up getting it rebuilt professionally or buying a replacement.
That was the bad news. The good news is that those small carbs are fairly cheap to buy (if you can find it). Just be careful because on ebay some people are selling their old (defective) carburtors.
Good Luck.
2007-12-18 04:08:23 · answer #8 · answered by Lover not a Fighter 7 · 3⤊ 3⤋
It could need a gasket replaced,or the float adjusted.Where is it leaking from?.
2007-12-18 04:08:23 · answer #9 · answered by Ninky Nonk---In The Night Garden 4 · 1⤊ 1⤋
just replace gaskets
cost a couple of pence and a bit of time
2007-12-18 04:09:29 · answer #10 · answered by Anonymous · 1⤊ 1⤋