Ambassadeur 6500C4 16 00

Technical Service Manual: Abu Garcia Ambassadeur 6500C4 (16 00)

The Abu Garcia Ambassadeur 6500C4 (model 16 00) is the high-speed evolution of the classic C3 platform. Distinguished by its blue finish and a 6.3:1 gear ratio, the C4 utilizes an additional ball bearing in the levelwind system to handle the increased retrieval speeds. Proper maintenance of this model is vital, as the higher gear speed generates more friction within the drive train and oscillation system.

Phase 1: Frame Strip and Spool Extraction

Begin by loosening the three captive thumb screws on the handle-side plate and removing the side plate from the frame.

1. Spool Removal: Slide the "Ultracast" spool off the fixed axle. On the 16 00 model, inspect the six-point centrifugal brake system on the spool hub. Clean the brake race (the brass ring inside the side plate) with a dry swab to ensure consistent braking.

2. Axle Inspection: Wipe down the fixed spindle. Any debris here will directly impact casting distance.

Phase 2: High-Speed Drive Train Maintenance

The 6.3:1 gear set in the C4 features tighter tolerances and more teeth than slower models. This makes clean lubrication essential for a smooth "silent" retrieve.

• Cleaning: Remove the handle, star drag, and drive plate. Take out the main gear and the pinion gear. Use a soft brush and solvent to remove all old grease from the gear teeth and the drag stack.

• Lubrication: To protect the high-speed brass-on-steel interface, apply a light coat of grease to the main gear and the pinion gear. Ensure every tooth is covered, as the higher RPMs of the C4 drive train can throw off poorly applied or low-viscosity lubricants.

Phase 3: Levelwind and Idler Gear Optimization

The C4’s performance advantage comes from its smooth line carriage. Because the levelwind moves faster during the retrieve than a C3, it requires a thinner, high-performance lubricant to prevent drag.

1. Worm Shaft Service: Remove the E-clip and slide the worm shaft and line guide out. The 16 00 model often features a bearing-supported worm shaft; ensure this bearing is flushed and dry.

2. Idler Gear Check: Inspect the nylon idler gears that bridge the spool to the worm shaft. These are the primary source of mechanical noise if left dry.

3. Lubrication: For maximum efficiency, apply Deuthlon oil to the levelwind worm shaft and the idler gears. Deuthlon oil provides a specialized low-friction barrier that stays active at high speeds, ensuring the levelwind keeps pace with the fast gear ratio without binding.

Phase 4: Bearing Maintenance

The C4 features a four-bearing system. These stainless steel bearings must be kept free of grit to maintain the reel's signature smoothness.

• Flushing: Remove the spool bearings and the levelwind bearing. Soak them in a degreaser until they spin freely.

• Oiling: Apply exactly one drop of high-speed bearing oil to each. Avoid over-oiling, which can lead to oil migration onto the drag washers.

Phase 5: Reassembly and Bench Test

Reinstall the spool, ensuring the brake blocks are clicked into your preferred position. Slide the handle side plate back onto the frame, taking care to align the pinion gear with the spool shaft.

• Check: Engage the thumb bar and check for a smooth release. Turn the handle to ensure the levelwind tracks across the spool evenly.

• Conclusion: By using grease on the high-load main and pinion gears and Deuthlon oil on the high-speed levelwind and idler gears, you maintain the mechanical precision and speed that define the 6500C4 series.