Draining carb

[thorns]

Finally bought my first bike, 2009 Rm250.
The previous owner mentioned that after a ride its best to drain the carb and showed me the bolt to loosen after shutting the fuel off, so no issues there.

Just wondering how much fuel should come out? Should a decent gush out, or just a few drops?

[george formby]

Finally bought my first bike, 2009 Rm250.
The previous owner mentioned that after a ride its best to drain the carb and showed me the bolt to loosen after shutting the fuel off, so no issues there.

Just wondering how much fuel should come out? Should a decent gush out, or just a few drops?

Enough to make a mess.. or ride about 1 km.

May I ask why? Only thing that springs to mind is if the bike is going to be sitting for some length of time & the fuel will go stale.
As an aside, I used to cut the fuel to a 2 stroke out board after I flushed it & let it run till it it stalled, it would often sit for months & this made it much easier to start. You may not need to drain it & if you do just turn the gas off & let it stall.
Greater minds than mine may have a good reason for not doing this.

[bogan]

How often are you riding it? I wouldn't bother draining it unless I knew I wouldn't be riding for another 6 months or more.

Guess about 50mls should be in there.

[thorns]

Thanks george.

So really theres no benefit on doing it if the bike is regular use?
Nice to know, as i on a bit of a learning curve at the moment, was just going by what was suggested be previous owner.

[thorns]

How often are you riding it? I wouldn't bother draining it unless I knew I wouldn't be riding for another 6 months or more.

Guess about 50mls should be in there.

Thanks mate, will not worry about draining unless going into storage for a while.

[FJRider]

Thanks mate, will not worry about draining unless going into storage for a while.

It won't hurt to just turn the fuel off when not being used though ... a sticking float may make starting at the weekend difficult if the carb' is flooded.

[thorns]

One other question, running it on 98 pump gas at present, can you run on 95 alright as well? Just cant always get 98 nearby.

[FJRider]

One other question, running it on 98 pump gas at present, can you run on 95 alright as well? Just cant always get 98 nearby.

Was 98 around in 2009 ... ???

[SMOKEU]

I can't see any reason why 95 RON would cause it to detonate unless someone has tuned it for higher octane fuel.

[Akzle]

Finally bought my first bike, 2009 Rm250.
The previous owner mentioned that after a ride its best to drain the carb and showed me the bolt to loosen after shutting the fuel off, so no issues there.

Just wondering how much fuel should come out? Should a decent gush out, or just a few drops?

ghey shit. that suggest there is a problem with flooding cylinder, IE needle seats shat.

anyway
if you want to drain your carb turn your fuel tap off ~3 minutes before you stop riding and run the engine until it stops of it's own accord.

how much fuel? see the little bowl bit on the bottom of the carb? that's about half full of fuel...

[Akzle]

...
Greater minds than mine may have a good reason for not doing this.

what the hell kind of KBattitude is that?!?!

there are no greater minds than yours...

[Crasherfromwayback]

Drain it if you're not going to ride it for a few weeks. This unleaded shit we now have leaves a nasty gunk/film when it evaporates off.

[sootie]

I agree with Crasherfromwayback, but even a week or two should be OK.
Oil mixed fuel is more of a problem, and turning the petrol tap off where leaving a bike for some time is a good idea too. Otherwise a very slow weep of fuel into the carb plus evaporation will tend to leave rather a lot of scum over some months.

[Crisis management]

I assume this is a 2 stroke (not a Suzuki expert)? Before you start shutting fuel off and running the carb dry have a think about the fact that a pre-mix 2 stroke uses the oil in the fuel to lubricate the engine bearings and piston skirt, do you really want less lubrication as it runs lean (fuel starvation) and heats up?
I just use good oil and 91 in the KTM and have no problems if it sits for a month, 2 kick and it starts.

[takitimu]

You could always turn the fuel off and lie it on its side, most of it will drain out.

Good call on running a 2/ out of gas cm.