Question about 2000 Honda XR 250 R

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Carby how do i fit jetting for new power pipe

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Remove carb. Remove fuel bowl to access jets. Low speed jet is separate off to one side. Main jet is in center and threads into emulsion tube which has metering needle down its center. Unscrew main jet from emulsion tube and replace with bigger or smaller (depending on your desires).

Posted on Jun 04, 2009


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1 Answer

Hedge trimmer

possible problem with dirt or blockage in the main jet of the carby
remove carby and blow out all holes and jets
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ensure that the oil / fuel mixture has not excessive oil in the mix
do not use e-mix fuel

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Fuel will not draw, it will start but only run for a few seconds

Carby ,pull down,blow out all jets and passages fit new kit to carby,blow out fuel tap strainer if applicable.

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Engine won't run unless choke is partially closed.

when the choke is partially closed there is extra vacuum created in the venturi of the carby that assists to help pull the fuel through the main jet and the idle circuit
it indicates that the main jet circuit still has a blockage or there is insufficient fuel getting to the carby ( vent problem)
it could be from a gasket or diaphragm blocking a vacuum port or the fibre block under the carby incorrectly fitted

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take them and measure the bolt holes,outside diameter,the stud measurement and then take one and put it in place of the other one and bolt it on,if it fits,then it might work

Jul 09, 2015 | kawasaki Motorcycles

1 Answer

Carby needs tuning

Rejetting is a good idea.
Finding the right jet is a process of elimitnation.

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1 Answer

350 holley diagram

Check for vacuum leaks--pipe to base of carby for distributor---vacuum brake hose. Check float levels check power valve diaphragm is not burnt or has a hole. Check the gasket at the base of the carby Screw both idle mixture right in then back each 2and 1/2 turns . Use the throttle until you can get the engine to run and reduce throttle until it idles on the jets.. Check engine timing and correct firing order.

Apr 28, 2013 | Cars & Trucks

1 Answer

My 2 Yamaha ef2000is generators will only run anything in my camper that requires power (ac,tv, or microwave) unless the choke is on about a 1/4 of the way.

dirty carby jets. it is not receiving enough fuel thereby needing the choke. remove carby and clean jets thoroughly or simply try removing air filter & squirting carby cleaner into carby throat whilst revving engine several times, this sometimes works enough to solve problem.

Jun 30, 2011 | RTO New Yamaha Inverter Ef2400is / Yamaha...

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Hi i have purchased a yamaha xvs 650 vstar classic 2003 model fitted with BUB exhaust pipes and i am getting poping and back fireing when decellarating and have been told the carby may need rejetting,could...

If the mechanic did not replace the exhaust pipe gaskets in the head or on any connections between the head pipes and the mufflers , the air leaks could be igniting unburned fuel in the exhaust , causing the popping and back firing. Try replacing any gaskets in the exhaust system.
If you have a flat spot or hesitation when accelerating than you probably also need to rejet the carburetors. Bigger main jets should fix that condition. A jet kit may also contain differently tapered needles for the slides to help compensate for the change in the acceleration curve.

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1 Answer

Honda *** scooter not moved for 3 years new battery and drive belt fitted but lacks power

Have you removed the carby and removed the jets and cleaned them? also is the compression OK? Is the exhaust blocked...Try loosening off the 2 10mm nuts at the cly that holds the exhaust pipe, drop the pipe down a little and try for power. if its better the mufler is blocked..the outlet could have a nest in it or carbon and rust has blocked it.You can cut them open and clean them, but must have the tools and know how...

Jun 27, 2010 | 2005 Honda Dio

2 Answers

I have a 89 klr 250 and it wont idle anymore ive


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