Manuals Brands Harbor Freight Tools Plastic Welders Harbor Freight Tools Plastic Welders Manuals ProdManuals has more than 3 Harbor Freight Tools Plastic Welders manual(s) covering 3 model(s). 1 8 Models Document Type 1 1300 Watt Plastic Welding Kit with Air Motor and Temperature Adjustment 8 800 Watt Plastic Welding Kit with Adjustable Temperature 80 Watt Iron Plastic Welding Kit