Jarvis VC User Manual (English)

Questions and Answers:

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lisa21Aug 2, 2025
What to do if the blade does not rotate and shuts off when the trigger is pulled on my Jarvis VC Power Tool?
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  Vickie BoydAug 2, 2025
  First, adjust the air regulator (item 58). Pull the trigger and turn the air regulator knob (item 58) clockwise until the blade turns off, continuing until you reach your desired blade rotations. If this does not work, check the air pilot valve (item 59) by removing the four screws and cover, then carefully inspect the rubber diaphragm. If there's a hole, the diaphragm needs replacing (part number 3343009). Finally, if the regulator has no range of adjustment, clean the venturi assembly (item 53) by removing the tube connector (item 52) and clearing the small hole in the silver pin with a small diameter wire, being careful not to enlarge the hole.
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Jennifer KellerAug 8, 2025
Why does the motor run when the trigger is released on my Jarvis VC Power Tool?
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  Sherry SmithAug 8, 2025
  The motor may continue to run after releasing the trigger on your Jarvis Power Tool due to a couple of reasons. First, check the air motor trigger (item 38). If it's malfunctioning (flops in and out or stays depressed), remove the air inlet valve (item 32) and valve stem pin (item 33). Use long nose pliers to remove valve pin (item 34) and clean the pins until their surfaces are smooth. Clean out the deepest hole in the pistol grip handle (item 22) with a drill, rotating by hand, without increasing the hole size. Alternatively, check the O-ring located in the air inlet valve (item 32). Remove the retaining ring, screen, spring, and poppet. Check for an O-ring on the poppet or inside the air inlet valve, and reassemble it to the poppet before reassembling the air inlet valve.
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jimmycarterAug 17, 2025
What to do if the blade does not rotate when trigger is pulled on my Jarvis VC?
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  Jeremiah HillAug 17, 2025
  If the blade on your Jarvis Power Tool doesn't rotate when the trigger is pulled, check the following: 1. Air Supply: Ensure the air pressure gauge (item 61) shows pressure. 2. Vacuum: Confirm there is suction at the blade when the trigger is pulled. No suction indicates the air supply to the tool is shut off. 3. Vanes (Item 17): If air exhausts through the pistol grip handle, release the trigger, turn the blade 1/2 revolution, and pull the trigger again. If it now runs properly, it indicates sticky vanes due to wrong oil, dirt, or lack of oil. Disassemble the motor, clean the rotor, and check the vane length (they should be .002 shorter than the rotor). Also, check the rotation of each bearing to ensure they rotate freely.