Gun repair on a pressure washer
Basically, a gun on a pressure washer is not an overly complicated construction. The mechanical technology is located in the housing, which normally consists of two shells. When repairing, leaks can be patched on the opened housing or individual parts such as seals can be replaced. So much for the theory.
Hand part of the gun often listed as a complete spare part
The gun on most pressure washers is compactly designed by the manufacturers. Generally, the simple opening and closing mechanism with a lever connection to the trigger is located in the housing. The handle with the trigger guard is listed by most manufacturers as a cohesive spare part.
More on the topic: Best Pressure Washer Guns
Both operating instructions and spare parts lists do not provide for splitting and disassembling the hand part of the pistol into its components. Even if screw channels exist (over ten on some models), the screws are not always accessible or pressed rivets are found on the base of the chamber.
Troubleshooting and cause elimination not possible
If the gun of a pressure washer leaks, in many cases it is not possible to find out what caused it. Often, the only option is to replace it after buying a new spare part.
Unfortunately, the gun can also be responsible for the fact that the pressure washer does not build up pressure. This possible cause can also only be assessed once a new gun has been purchased.
Also of interest: Why does the gun on a pressure washer leak?
Approach according to the motto “already broken anyway”
In view of the relatively clear situation for the buyer and user that a new spare part is due anyway, it is also possible to try to open the gun in a somewhat more robust manner. Drilling out the supposed screw connections or rivets has saved some skilled hobbyists from having to buy a new one.
If leaks such as holes or cracks are discovered on seals or in the housing, they can be sealed with acrylic resin, body glue or superglue, depending on their size, to make them sufficiently durable.
A broken spring can be repurchased. Under the keyword and search term “cylindrical compression springs”, suppliers can be found online on the relevant search portals who sell such a spring (measure cross-section, length and wire thickness) for one to two pounds.
Rotten frames, plastic bearings and shafts can only be “splinted” sometimes and with a lot of creativity. However, before the gun ends up in the rubbish, it is worth a try.
