PILOT 91435
PILOT MR Retro Pop Collection Fountain Pen Instruction Manual
Model: 91435
Product Overview
The PILOT MR Retro Pop Collection Fountain Pen combines a classic design with vibrant, patterned accent bands. It features a premium brass barrel and polished stainless steel accents, designed for durability and daily use. This specific model comes with a Medium Point Stainless Steel Nib and is refillable with black ink.

Image: PILOT MR Retro Pop Collection Fountain Pen in Charcoal Grey with Houndstooth accent, showcasing its design and medium nib.
What's Included
- PILOT MR Retro Pop Collection Fountain Pen (Charcoal Grey/Houndstooth, Medium Nib)
- Black Ink Cartridge
- Squeeze Converter (for bottled ink)
- Elegant Gift Box

Image: The PILOT MR Retro Pop Fountain Pen presented in its elegant black gift box, alongside the box packaging.
Setup
- Unpacking: Carefully remove the fountain pen and accessories from the gift box.
- Ink Cartridge Installation:
- Unscrew the barrel from the grip section.
- Insert the narrow end of the black ink cartridge firmly into the grip section until you feel a click, indicating the seal has been punctured.
- Allow a few moments for the ink to flow down to the nib. Gently shake the pen if needed.
- Converter Installation (for bottled ink):
- If using the squeeze converter, remove any pre-installed ink cartridge.
- Insert the converter firmly into the grip section.
- Submerge the nib fully into bottled ink.
- Compress and release the converter's rubber sac multiple times to draw ink into the reservoir.
- Wipe any excess ink from the nib and grip section with a soft cloth.
- Reassembly: Screw the barrel back onto the grip section until secure.
Operating Instructions
The PILOT MR Retro Pop Fountain Pen is designed for smooth and expressive writing. Follow these guidelines for optimal performance:
- Writing Angle: Hold the pen at a comfortable angle, typically between 45 and 55 degrees to the paper, allowing the nib to glide smoothly.
- Pressure: Apply light, consistent pressure. Fountain pens do not require the same force as ballpoint pens.
- Capping: Always cap the pen when not in use to prevent the ink from drying out in the nib. The cap snaps securely into place.
- Ink Flow: If ink flow is inconsistent, ensure the cartridge or converter is properly seated. A gentle shake can help restart flow.

Image: A collection of PILOT MR Retro Pop Fountain Pens in different colors, demonstrating the variety within the collection.
Maintenance
Regular cleaning ensures the longevity and optimal performance of your fountain pen.
- Routine Cleaning:
- When changing ink colors or if the pen has not been used for a while, flush the nib and feed with cool, clean water.
- Use the converter to draw water into and expel it from the nib section until the water runs clear.
- Allow the section to air dry completely before reassembling or inserting a new ink cartridge/converter.
- Deep Cleaning: For stubborn clogs or dried ink, a mild, pen-safe cleaning solution can be used, followed by thorough rinsing with clean water. Avoid using harsh chemicals or abrasive materials.
- Storage: Store your fountain pen capped and upright when not in use, or in its original gift box to protect it from damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No ink flow or skipping | Dried ink in nib/feed, empty cartridge/converter, improper cartridge/converter seating. | Flush the nib and feed with water. Replace or refill ink. Ensure cartridge/converter is fully inserted. |
| Excessive ink flow or blotting | Damaged nib, incorrect ink type, or pen shaken too vigorously. | Ensure only fountain pen ink is used. Avoid excessive shaking. If nib is damaged, contact support. |
| Scratchy writing | Misaligned nib tines, paper quality, or incorrect writing angle. | Adjust writing angle. Use smoother paper. If tines are misaligned, seek professional repair or contact support. |
Specifications
- Model: 91435
- Brand: PILOT
- Color: Charcoal Grey/Houndstooth
- Nib Type: Medium Point Stainless Steel
- Ink Color: Black (included cartridge)
- Material: Brass barrel, Stainless Steel accents
- Dimensions: Approximately 5.4 x 0.5 x 0.5 inches
- Weight: Approximately 3.52 ounces
- Closure: Retractable (cap)
- Grip Type: Contoured
Warranty and Support
For warranty information or technical support regarding your PILOT MR Retro Pop Collection Fountain Pen, please refer to the documentation included with your purchase or visit the official PILOT website. PILOT is known for its quality and superior writing performance, backed by over 100 years of pen manufacturing expertise.
You can also visit the PILOT Store on Amazon for more information and product offerings.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.