Recent content by Russell

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  1. R

    Carburetor rebuild

    My 742B has always required a lot of pumping and full choke to start when cold, and even some choke to start when 'cool'. I just put a Walker rebuild kit into the carb . After re-installation, the engine started right up, but I have virtually no control over the RPMs. The engine races, choking...
  2. R

    642B hydraulics

    Update. After connecting to another attachment and determining that the Bobcat third valve is functioning correctly, I grabbed a handful of wrenches to remove the pressure relief valve on the tree spade. Just as I was started to back out the big fitting I noticed that the 5th valve--the one that...
  3. R

    642B hydraulics

    I agree it is a puzzler. I'm not sure how to recognize a pressure relief valve. The valve bank has 7 units- I couldn't find a brand name like Prince or Griesen. Unit 1 is where the supply and return lines connect. On one end of this unit is a 3/8" bolt which appears to be adjustable. Units 2-6...
  4. R

    642B hydraulics

    This may a generic hydraulics questions, but since it is on my Bobcat, here goes. I use a Caretree tree spade on my 642B. Hydraulic supply lines connect directly to my auxillaries, and you can't mix them up. the valve bank for the spade is a 5 spool bank with four active, and one just connects...
  5. R

    742B carburetor/ governor

    PS--this is a Mitsubishi engine
  6. R

    742B carburetor/ governor

    In a recent post (742B timing marks) I described my experience in replacing the head gasket on my machine. Now that it is up and running, there is a serious problem with the carb and/ or governor. It starts OK, powers up, and idles, but sounds like it has water in the gas, or is running on 3 1/2...
  7. R

    742 B timing marks

    Sure enough, there is another mark. Thank you a hundred times !! Going by the book, there is not a hint that such mark even exists. Poured aliitle gas down the carburetor, and she fired right up. Made appropriate notes in the manual. Thanks again.
  8. R

    742 B timing marks

    Try this link. It should show 2 pics of timing marks, but it may also show 20+ pics of a recent logging operation http://s1198.photobucket.com/albums/aa454/VTtreegrower/
  9. R

    742 B timing marks

    Continuing saga, things still don't line up. I was hoping to post pics of timing marks, but apparently we can't do that. With what clearly appears to be a timing mark on the crank sprocket aligned with what clearly appears to be a pointer, no 1 piston is nearly at the bottom of its stroke. By...
  10. R

    742 B timing marks

    Old machinist (from old forester)- mine is probably older or newer than the Ford version. After sending my message, I reexamined the setup and found that the presumed timing mark on the crank sprocket is a punch prick just above one of the threaded holes. The v-belt pulley has a punch prick near...
  11. R

    742 B timing marks

    I just replaced the head gasket on my machine after it rusted through and squirted coolant all over the exhaust manifold. Fortunately, there was no breach into the crankcase or combustion chambers. I believe I followed the instuctions in the repair manaual correctly in re-assembling, but it does...
  12. R

    Steering lever adjustments 742B

    Have ordered all the bushings shown in the parts manual. Will let you know how everything turns out.
  13. R

    Steering lever adjustments 742B

    I have read the service manual, and found old threads on this site about steering adjustments, so I am ready to tackle it. There is quite a bit of slop in my levers, suggesting that replacement of all the bushings would be a good idea, not just some adjustments. Does Bobcat sell a kit of...
  14. R

    Dipstick heaters

    This won't help the chap with an air-cooled rig, but I had terrible difficulties starting my 742B in the winter, until I installed a block heater. It is a freeze-plug heater from Bobcat, inserted into the rearmost freeze plug on the block. It's the easiest plug to access, but still PITA. Machine...
  15. R

    New tires or tire chains?

    I have good tread on my machine, but traction in snow without chains is absolute zero. I have plowed snow for two years with chains only on the front, but maybe this year I'll put them on the rear.
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