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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I have a bobcat 642 that will not turn left or right. Just bought it at a clearing sale. Do you have a manual for this model please


go to this site and download the underlined manual.:http://www.worldcat.org/title/bobcat-641-642-643-service-manual/oclc/221517962

Dec 06, 2016 | Bobcat Garden

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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/

Feb 20, 2015 | Bobcat Garden

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How do I remove the slide arm on my 643 bobcat


Bobcat 641 642 643 Skid Steer Loader Workshop Service Repair Manua dowload

This is the most practical Service Repair Manual for the Bobcat 641 642 643 Skid Steer Loader Workshop Service Repair Manual Download ever compiled by mankind. This DOWNLOAD contains of high quality diagrams and instructions on how to service and repair your Bobcat 641 642 643 ,you can download it.This is a must for the Do-It-Yourselfer!

Jul 30, 2013 | Computers & Internet

2 Answers

Bobcat 643 how to disassemble fuel injector


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)

Jun 04, 2013 | Clarke Bobcat 643

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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.

Jan 09, 2013 | Clarke Bobcat 643

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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.
Good luck!

Aug 23, 2010 | Poulan 42-Inch Steel Deck 17.5 HP Briggs &...

1 Answer

Engine starts and idles, give throttle, revs, bogs, revs, bogs


Check for a loose connection by the carb. Sounds like its sucking air.

Feb 25, 2010 | Garden

1 Answer

Exhaust leak


I think the exhaust on that east-west mounted engine is on the rear\ back of the engine. No good news. Have to raise the cab and go through that way with a long extension, I use 1 or 2 36'' extensions with an impact swivel socket. Spray WD-40 on them before hand and let soak for a good while. After you break them loose, use a long magnet to catch\ hold them coming off. Going on you can use some regular paper INSIDE the socket to hold the nut firmly in the socket. It's kinda like shooting pool. Good luck

Mar 13, 2009 | Bruder Cat Skid Steer Loader

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