Model H120 In my trigger handle the trigger is completely free from any return spring action It is just loose in the gun. Is a new gun available for my old machine and how much? Thank you Bob Lowderman. Email: [email protected]

The Winchester Model 1897 evolved from the Winchester Model 1893. The Model 1897 and 1893 were both designed by John Browning. The Model 1897 is an external hammer shotgun lacking a trigger disconnector. This means that the user can hold the trigger down while cycling the shotgun and once the action is returned to battery the gun fires. The gun itself is classified as a slide action pump shotgun. It was the first truly successful pump-action shotgun produced. Throughout the time period the Model 1897 was in production, over a million of the type were produced in various grades and barrel lengths. 16-gauge guns had a standard barrel length of 28 inches, while 12-gauge guns were furnished with 30-inch length barrels. Special length barrels could be ordered in lengths as short as 20 inches, and as long as 36 inches. Along with various grades and barrel lengths, the Model 1897 came in two different chamberings. One was the 12 gauge and the other was the 16 gauge. The shells should be of the 2-¾ inch or 2-? inch model. Any shells larger are not recommended. An average Model 1897 held 5 shotgun shells in the magazine tube. After including the one shell that could be held in the chamber, the average Model 1897 held a total of 6 shotgun shells. However, this would vary from grade to grade. When working the action of the Model 1897 the forend (fore grip) is pulled back, forcing the breech bolt to the rear which extracts and then ejects the spent shell while simultaneously cocking the external hammer by pushing it to the rear. When the forend is slid forward again, the breech bolt pushes a fresh shell into the gun's chamber and locks into place. This action of sliding the forend back and forth (pumping) is why the gun is classified as a slide action (or pump) gun.

Are you talking about the electric switch that shuts off the motor when the trigger is released?
If so, there is an arm that comes out of the high pressure side of the manifold and is connected to a spring loaded piston. The piston extends under high pressure (spray trigger released) and retracts when spraying. At the opposite end of the arm is an allen screw and locknut. The allen screw bears on the microswitch arm to control the electric motor. When properly adjusted, the motor should turn off when the trigger is released. If it doesn't, loosen the locknut and adjust the allen screw slightly outwards toward the switch. Pull the trigger a few times and verify the motor starts up and shuts down when you release it. Tighten locknut.
Hope that helps.

Probably a loose wore out spring on the trigger. I would suggest you take the gun to a professional before you attempt to fix it yourself and have an accidental discharge.

To find the model number, look on ebay for hitachi framers and hopefully you will find one listed that looks like yours. If no joy, take the gun to your local fastener/nailgun dealer for parts. The dealer most likely has box full of used parts for your gun. I have seen many older nailers with bent safety foot that caused the plunger to stick in the engaged position. Some nailers have the safety return spring incorporated within the trigger plunger /valve area and still others that have the spring hidden under a guard on one side of the nailer (guard part # 883493). Look under the main body of the nailer for an indention where one side of the safety spring fits into (less than 1/2 inch in diameter) ; directly below the indention will be a point on the safety foot to catch the other side of the spring. Good luck

Usually miss feed happens when the driver does not return to top position not allowing the nails to feed into position. Easy to check, point nose of nailer up then down again to see if the driver is loose in the cylinder. If loose, the driver will be in the down position when the side door is opened. If driver is down, replace driver oring. If driver oring is good, look for spring tension on feeder and check feeder spring on the door side. If piston oring good and feeders have good spring tension, suspect lower bumper cracked(remove head and piston to check bumper).
On gun with depressor (safty foot) not actuating trigger, look for worn trigger (trigger inner lever could be worn) or loose or worn firing pin in the trigger valve above the trigger(valve # tva6). Replace as needed. To check for proper gun action, remove the nails, remove the 3mm roll pin holding trigger and dry fire the gun by depressing the tigger pin. Good luck

Remove the air cleaner assembly so that you can see the action of the throttle mechanism. If nothing around the carburetor throttle arm is broken or out of place (the return spring), then remove the screws in the throttle trigger part of the handle and look for sawdust blocking throttle trigger action. Hope this helps!

Make sure the needle is pushed completely up against the tip. You will possibly have to take the back handle off to adjust it. (I am not familiar with this paint gun specifically). Make sure you do not force the needle into the tip, gentley push it until it stops.
I hope this helps.

if air sound comes out when you press trigger your pressure regulator pin is stuck-oil gun and attach hose repeate until pin frees or remove pin and clean with brake kleaN oil and replace

Its a missing or broken spring in the handle(trigger). If you look inside the handle you should see a circular spring around the post of the trigger. This spring returns trigger to idle position. If its missing or broken the trigger won't spring back.

I have repaird hundreds of nail guns with a problem similar to yours. Depending on the brand and model, the problem can be repaired by checking the following. Headvalve orings should be checked for wear and any surface that the orings contact must be smooth and free from scratches. If the surfaces are scratched try to smooth with fine sandpaper and use light grease instead of oil when assembling. The safety contact foot may not be reaching high enough into the trigger to properly push in the trigger button. Check for worn spots on the trigger that may be filled in with epoxy, loose fitting trigger caused by worn roll pin or retaining pin. Some of the trigger valves as used on many bostitch nailers (tva6 valve) used a plastic pin which contacts the trigger. If this pin is loose or worn the valve should be replaced. Some tva6 valves have a vinyl looking sort of oring that fits too loose on the spool. This vinyl oring in not available by itself but if the oring fits too loose the gun will not fire and leak air. On bostitch remove the trigger and the rollpins holding the trigger valve and apply air to gun to eject valve. (use heavy glove to catch valve as it will come out with force)