Buffalo Tools 4,000 Watt 6.5 Hp Portable Generator #GEN4065 - Answered Questions & Fixed issues

The switch is probably generic.. go to a Lighting store and see if they have equivalent

If you can't get any info from the retailer as to repairers for you machine then check out other gen sets as most run generic carbys on the engines.

That is the fun part! You have to leave the handle end free, as in no handle on it, put a good knot in one end of your new pull cord, feed it through the hole in the pulley, feeding it out so you can pull it back into the space where the pulley is. Should be a slot on the pulley to bring it up in. Wind pulley against spring, same direction as normally pulled when starting, will need three to six rounds, can't tell how many cause it varies. Stick cord out hole to where handle should be while keeping tension on spring so you don't lose it. Tie handle on and try it. You may have to adjust rounds against spring and length of cord until you get it right. Good luck!

There have been several factories in china that have made the motors used on buffalo generators, a couple of these are Lifan and J.D. as in Jiangdong.All of these motors are very similar to honda motors.The 6.5,13,and 15 h.p. motors are real brutes and hold up very well.

call buffalo tool parts dept.they have brand new tanks for $36.75 or if you need a petcock they cost $9.95 they also have the gas gauge for $9.60.call 1-800-568-6657

I'm not familiar with this particular generator however I would suggest trying to find a local repairer to get the armature rewound, which may well work out cheaper than buying a new part anyway.
Try searching Google Maps http://maps.google.co.uk/maps?hl=en&tab=wl In the search box type in 'armature rewind' and your location

Idle speed jet or passage and/or high speed jet/passage is clogged. Remove the carb and inspect and clean thoroughly, then re-install. Set idle and high spped screws approx 1 turn and tune to run smooth from there.

First of all replace the on switch. The fuel tank is located on top so this unit is gravity fed. Check the inline filter for being plugged( if it has one). check the fuel line for kinks and blockages. Also check to make sure it has good fuel before starting.

Try Ebay for I did on mine

Dump ALL old fuel out of tank, you might have got a clog in the fuel line, carburator, fuel valve. Remove carb bottom Sediment bowl then spray Carb cleaner thru the gas inlet AT the carb 3-4 secs CAUTION: KEEP YOUR HEAD BACK.. that cleaner hurts if you get it in your eyes... and NEVER SPRAY A HOT ENGINE (np with yours tho no start) Refill tank with NEW fuel (or strained at least if emergency remote repair) Place a suitable catch container over gas inlet line to carb (at carb) open fuel valve chk for fuel FLOWING (no dripping) into container. replace fuel line to carb start as normal
if not firing still chk that spark plug, might need cleaning now that rest is ok.

If it has been in storage with gas in it. it is gunked up. Need to remove carburetor and take to someone to clean carb.

wow, that is high, i would think voltage regulator is faulty also

Do a ohm test on armature slip rings with brushes removed.You should have continuity between rings but not between either ring and shaft.

try googling buffalo tools 7,000 w propane generator manual 7000 kw is a very large unit - 7,000,000 watts

have the voltage regulator system checked in the regulator the voltage controls the amperage allowed and it that unit is not working properly then there will be no current out put that regulator could be part of the control board for the main ac out put and may have developed a fault in the section for 12 volts on the board there is a limit on the charge rate for the battery and if it is exceed it may have damaged that circuit or possible blown a fuse in the amperage circuit

if you cannot get the specs from on line or from a service agent , generally the following apply:- water cooled engines inlet hot .010"--exhaust hot .012" for air cooled engines inlet hot .012"-- exhaust hot .014"

HOPE THIS LINK WORKS. http://www.buffalotools.com/manuals/gen154manual.pdf it is the Gen you got, I have same.. Condenser failed after 7 yrs. Just suddenly stopped putting out. Kept running nicely though!

Yes

No one gives sizing. https://generatorguru.com/spark-plug-27901063/ https://www.google.com/search?q=united+power+generator+Model+GG2900+parts ..

https://cleanestor.com/how-to-clean-up-freon/?expand_article=1 This should help