Question about 2000 kawasaki KDX 125

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Connecting rod seized to the crank, and need a diagram off engine to put back together

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Buddy its a specialist job to do this job you can strip it easy enough but putting back together takes a specailist

Posted on Apr 03, 2009

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Siezed dirtbike

If the cylinder, piston and rings are all good. Check your rod. It might have scored it on the pin from the rod to the crank.

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Virago blowing out through air filter

Will, let me tell you the "Old school" way to fix this.(1) Remove all of the spark plugs. (2) Disconnect the fuel lines. (3) Pour light weight oil directly into the heads.(I know, sounds weird) (4) Crank Crank Crank Crank. Until the engine turns smoothly. If the valves were stuck, this should cure it! (5) Blow the oil out by the compression of the engine cranking. (6) Pour alcalhol into the cylindars to clean the oil out of the top of the pistons.(Starting fluid also works well) (7) Again, Blow it out using the compression of the engine. (8) Put everything back together and fire it up! NOTE!!!! Any time you know you are going to store anything with an internal combustion engine, treat the engine in the same way, by pouring oil into, and onto the pistons directly. This prevents seize ups, and helps to preserve oil seals. ^^

Jan 11, 2013 | 1994 Yamaha XV 535 Virago DX

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Have a 2006 ktm 250 sxf seized rod to the crank got it changed reinstalled put motor back together now can not even kick it like somthing is stuck. Toke the clutch basket out, timing gear and water pump...

Your clutch basket is the link between the engine and transmission. Your kick starter rotates the clutch basket gear, which turns another gear at the engine crank. Remove either the basket or gear at the crank and see if the engine, and the transmission both turn. Sounds like the engine is stuck for some reason. At least you can cut the issue in half.

Aug 13, 2011 | 2006 KTM 250 SX-F

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I have a 2003 Yamaha ttr125er. The connecting rod bearing was seized up on the crank. I am wondering if I will be able to disassemble the crank and put a new pin and bearing in and reassemble the crank...

Allan this is a shop job for the connecting rod. You should be able to do the rest yourself if your mechanic abillities are good. If you got the engine hot enough to seize it you might have more problems instore for you. Are you sure it is a con rod and not piston in cylinder seized? If it is a con rod bearing see what a shop would charge, then see what is available on ebay for parts. I have seen them (crank and connecting rod) on ebay between $50.00 and $180.00.

Apr 19, 2011 | 2002 Yamaha TT-R 125 L

1 Answer

My bikes engines one piston is not broke the connecting rod which damage the cylinder and the engine.what can i do of the broken connecting rod.

You would need to replace the rod $70 and needle bearing $30. Both appear to be avaiable at Babbitt's. A dealer would need to tear down the engine all the way then use a hydraulic press to press apart the crankshaft and then mount the new connecting rod and press the shaft back together. Dial gages must be used to get a correct centerline on the crank.

The total cost will likely be $1000 if a dealer does the repair from start to finish. Please rate my answer. Thanks.

Aug 15, 2010 | 1987 Suzuki GSX-R 250

1 Answer

Replace connecting rod on crank

Very big job, you have to take the engine out of the bike and take it all apart making sure you remember where everything goes when it is time to put it back together, It maybe a better idea if you take it to a shop for fixing

Feb 06, 2010 | 1986 Honda XR 600 R

1 Answer

How too replace connecting rod on a ttr 125l. I have a 2001 ttr 125 with a seized conn big bearing. and I would like to know the proper way of splitting the crank too replace it

The top end comes off then the left and right side covers, flywheel, clutch and shift shaft. Now a case splitter is used to split the center case halves. To replace the bearing you will need a hydraulic press to disassemble and reassemble the crank halves. If the bearing is seized you should replace the bearing, crank pin and the connecting rod. The crank must be realigned using twin dial gages. Personally, I suggest a new crank assembly be purchased from ( $241 ). I would replace the crank end bearings at the same time and also the sprocket shaft outer bearing and seal. Please rate my answer.

Jan 03, 2010 | 2002 Yamaha TT-R 125 L

1 Answer

Want to know what parts i need to replace my lower connecting rod bearing on 99 suzuki rm 125 and the best place to get them

Understand that your bike has a pressed crank. A shop will need to press the crank apart then press it back together and align the crank. I suggest you go to Babbitt's for parts. /parts/viewby brand/parts.aspx

New crank main bearings are highly recommended.


Dec 15, 2009 | 2003 Suzuki RM 125

2 Answers

1 have a 1984 honda vt 500c can not to get it to

hi mate have you got oil in the crank case it sounds like you have a seized engine which requires a top end strip to inspect if cant find problem you will need a engine rebuild i will see if i can find a manual bud and i will get back to you

Aug 29, 2009 | 1984 Honda VT 500 C Shadow

1 Answer

Bike siezed up.rocking it frees up and starts but locks up

The piston seize destroys the piston, rings and cylinder wall. Bad enough, and repeated seizing, can get metal bits into the crank rod bearing and crank end bearings and seals. This is serious stuff. Sorry to be the bearer of bad news.

Seizing is caused by friction. Not enough lubrication means friction that creates heat. The heat builds and the piston and rings "weld" to the cylinder. A faulty cooling system can also cause heat. Any oil will break down and loose it's lubrication ability when the heat gets too high. A water pump malfunction or plugged coolant lines, leaking coolant hoses, plugged radiator and bad gaskets can create heat.

Other sources are > timing is off, air leak causing the fuel to be too lean, incorrect spark plug heat range, carbon buildup on piston and head causing detonation, motor oil used in gas instead of 2 stroke engine oil and over revs on the engine. I have probably left a few things out but these are the usual causes. Be aware that combinations of small problems can add up to a seize.

The engine needs to be rebuilt. Normally I would just rebuild the top end but since you have had multiple seizes the bottom end is probably contaminated. New crank bearings and seals should be installed. If the cylinder can't be bored then you will need a new cylinder. New piston and rings are also required. Bear in mind, you must find the cause or causes of the heat and fix those problems also. If you don't, the new piston will quickly seize up.

Top rating for this answer! Thanks Kev...

May 06, 2009 | 2003 Yamaha YZ 250 F

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