Question about Clarke Bobcat 643

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I have a old bobcat 643 with a kubota engine, It stats up and runs good for about 10 minuts then looses hydrolic presher and the engine bogs down and stops and wont restart, After about 10 minuts it w

Have changed filters and bleed air out of system, still the same problem.

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My husband is too proud to ask this silly question. But where/which one is the inlet valve and outlet valve on a bobcat 743b


There is no such thing as a bad or silly question. this is why were are here. Google is your friend in such cases

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Most likely yes, it is an 8. Best thing to do is take the bracket off the alternator to remount it. Then put the alt back on with slide/adjuster loose.

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Bobcat 641 skidsteer hydraulic problems.


That's one of the first things that came to mind as I was reading through your post; that the system was air-bound. Are there bleeder valves on the system?

In any event here is a website where you can buy the service manual for your skidsteer; https://mypowermanual.com/shop/bobcat/bobcat-641-642-643-skid-steer-loader-service-manual-download-6566135-10-86/

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How do I remove the slide arm on my 643 bobcat


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this is a job best left to the diesel experts. While you may be able to get it off the engine the settings are critical for engine life. If you get them wrong you will burn holes in the pistons or over rev the engine causing destruction. Diesel pump calibration is done on a bench and each plunger is set to produce the right amount of fuel and the governor is set to cut the fuel at a predetermined rpm setting ( flight idle)

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Have 763 bobcat loader keeps locking up with the sencers disengaging have notice the voltage guage going up to 18 volts at same time where should i start looking to fix this


Hello I have a 763 highflow bobcat all gauges read good I lock down the bar and go and it locks up about like the park brake is on but its off I can 10 to 15 foot and bam it locks up if someone has a idea id sure try whatever thanks.

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Oil is fine, runs fine for about 10 minutes then bogs down and dies. Let it sit for 10 minutes it will start again and run fine for another 10 minutes. Used to be 20 minutes, then 15. The cooler the...


It could easily be an electrical issue, or not. Get a spark tester (hooks up to the spark plug). Pep boys, Autozone, and Napa all sell them for less than $10. Check for spark when the mower has quit. If no spark, most likely need to replace the ignition module. Also check the flywheel key, if it is has been sheared or even knicked, the engine will run hot.
If you still have spark when engine has failed, check the vent on the gas cap. A clogged vent will cause a vacuum to form in the tank and stall the engine.
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Check for a loose connection by the carb. Sounds like its sucking air.

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