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Thread ID: 97233	2009-02-08 19:31:00	Outboard question	prefect (6291)	PC World Chat

Post ID	Timestamp	Content	User
746053	2009-02-08 19:31:00	Are there any outboard experts here? Someone told me a couple of days ago while on holiday that I should run all the petrol from the float bowl of the carbies after use. Ie disconnect fuel line from tank and run it on ears until the motor stops. I hadnt done that because I was worried while running out the fuel will lean and damage engine.	prefect (6291)
746054	2009-02-08 20:05:00	Sounds very much like the discussion I went through when I bought a generator to power our servers etc; everyone agreed that petrol spoiled over time, and flushing the float bowl was a good idea, but no-one could agree on how long it took to spoil!! So far the fuel in the genny has been there for 5 months, and it still starts perfectly. Will watch this thread with interest!! :thumbs:	nofam (9009)
746055	2009-02-08 20:07:00	It is a good trick for almost any 2 stroke that is going to stand around for a while. More so for float type carburettors than diaphragm type. The lean running is so brief that it seems to do no harm. I did this for many years with chainsaw, mower etc. (This is a regular [10 or more times a day] stopping method for many professional chainsaws. :) )	R2x1 (4628)
746056	2009-02-08 20:13:00	one of dads mates only uses his boat once a year - so once hes finished with it he will drain it and run it dry - he said it helped stop the carbie getting its jets clogged from the fuel sitting there for 11 months sounds logical to me - and why not use the fuel for something else? lawnmower perhaps?	MAC_H8ER (5897)
746057	2009-02-08 20:57:00	It is a good trick for almost any 2 stroke that is going to stand around for a while. More so for float type carburettors than diaphragm type. The lean running is so brief that it seems to do no harm. I did this for many years with chainsaw, mower etc. (This is a regular [10 or more times a day] stopping method for many professional chainsaws. :) ) How would you do it on a chainsaw they dont have fuel taps do they?	prefect (6291)
746058	2009-02-08 23:16:00	How would you do it on a chainsaw they dont have fuel taps do they? Little tanks, they run out out quick.	R2x1 (4628)
746059	2009-02-09 18:55:00	If you have exceeded your thirty word limit today, please don't read the following article . Fuel goes "stale" like bread or an opened bottle of cheap wine . If you don't keep it fresh either with an additive or simply by changing it, you'll get a gummy and fireproof fluid really quick: even quicker now with the advent of alcohol in the mixture . Two-stroke oils are different for differing reasons: some are for air-cooled engines whilst others are for water-cooled ones . Don't mix the two or use a generic "one size fits all" version as there ain't no such animal . Drain the tank(s), the carb bowl if it has one - or just plain run it outta fuel and it should be OK for a short storage season . Any longer and really you should purge the old fuel with some carb-cleaner and maybe a little 3-in1 oil or sewing machine oil to keep corrosion and verdigris to a minimum . WD-40 is not a good choice as it will gum-up after a while and make a mess of the fuel system . While on the carb - there's a lot of mis-info about the newer carbs that don't have floats to meter the fuel supply . They aren't really carbs at all, but a mini crankcase-actuated fuel injection system . They have a couple of flapper vales to act as one-way pumps to inject the gas into the airstream and thus into the engine . They are VERY susceptible to gum and corruption from the thickened chemicals in the "new" fuels left after the more volatile components evaporate and therefor might need some persuasion to get them to run at all next season . They might refuse to pump fuel if either flapper valve is glued into position and can make getting a power tool out of the garden shed to run at all - very frustrating . I just try hard to get one running in any condition and then choke off all the air into the carb unit and this usually sucks the gunk out of the valve and it will run again like last year . New gas has restorative powers and can clean up the innards pretty good if you can keep the thing running! Sometime - just sometimes, it doesn't work and I spend a day just cleaning out the Walbro or Tillotson units to make them run at all . Although THIS SITE ( . flygsw . org/walbro_tuneup . htm" target="_blank">tech . flygsw . org) is all about FLYING RC aircraft with Walbros, you can learn how they work very well and can tune them up and repair them for yourselves if you read the details . (Warning: Over thirty words again!)	SurferJoe46 (51)
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