Willmar Wrangler 4550 Loader. [top]. Features: • 83-hp (61.9 kW), 178-cubic- inch (3113 cm3), 4-cylinder,. Deutz turbo-diesel engine with.Willmar Part Number WRP0406 More Detail Willmar Material Handling-Loaders (Wheeled / Skid) 4300 Wrangler Loader 1998 Parts Catalog Publication Type: Service Manual. Language: English Brand: Willmar. Publication Number: WRP60000 Description: 4300 Wrangler Loader (1998). Original factory Willmar WRP0406 Parts Book - 4300 Wrangler Loader (1998) by DIY Repair Manuals. Best selection and lowest prices on operator manual, Willmar Wrangler 4500 Loader Bucket operating load capacity; 2,450 pounds (1097 kg); pallet fork operating load Brakes, service, Hydrostatic braking.