Author Topic: Looking for Marzocchi fork manual including NTX 350/650 forks  (Read 1465 times)

Online Dirk_S

  • www.dirkshearer.com
  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • *
  • Posts: 2162
  • Doodler of doodles
    • www.DirkShearer.com
  • Location: Portland, Maine, U.S.
Does anyone have any leads to where I might find a service and/or parts manual for the Marzocchi forks that were used for the NTX 350/650?
Current: '18 Guzzi V7 III Rough, '17 Guzzi V9 Bobber, ‘78 BMW R80/7, 1986 Sputnik sidecar

Previous: '16 Guzzi V7 II Stone, ‘15 Ural Gear Up, '11 Suzuki TU250X, ‘86 Guzzi V65 Lario, '78/‘80 Honda CX500, '77 Kawasaki KZ400 Special

Offline RinkRat II

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • *
  • Posts: 2268
  • Lake Powell AZ
Re: Looking for Marzocchi fork manual including NTX 350/650 forks
« Reply #1 on: May 06, 2025, 04:25:16 PM »

  Do you know which model and size they are? I may have a manual for them.

   Paul B :boozing:
A Miller in the hand is worth two in the fridge.

Offline Antietam Classic Cycle

  • Gaggle Hero
  • *****
  • *
  • Posts: 14845
  • Happily stuck in the past.
    • Antietam Classic Cycle
  • Location: Rohrersville, Maryland
Charlie

Online Dirk_S

  • www.dirkshearer.com
  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • *
  • Posts: 2162
  • Doodler of doodles
    • www.DirkShearer.com
  • Location: Portland, Maine, U.S.
Re: Looking for Marzocchi fork manual including NTX 350/650 forks
« Reply #3 on: May 06, 2025, 05:03:46 PM »
  Do you know which model and size they are? I may have a manual for them.

Model— no clue. Tube diameter = 40mm; stroke = 210mm.

Note that these forks have only a 2-point mounting system for the fork brace (1 mounting hole per fork) rather than the more rigid 4-point (2 holes per fork). I ended up modifying a British Fork Co./Russell James fork brace for structural rigidity.

Here’s an exploded diagram from the NTX service manual:



« Last Edit: May 06, 2025, 06:24:46 PM by Dirk_S »
Current: '18 Guzzi V7 III Rough, '17 Guzzi V9 Bobber, ‘78 BMW R80/7, 1986 Sputnik sidecar

Previous: '16 Guzzi V7 II Stone, ‘15 Ural Gear Up, '11 Suzuki TU250X, ‘86 Guzzi V65 Lario, '78/‘80 Honda CX500, '77 Kawasaki KZ400 Special

Online Dirk_S

  • www.dirkshearer.com
  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • *
  • Posts: 2162
  • Doodler of doodles
    • www.DirkShearer.com
  • Location: Portland, Maine, U.S.
Re: Looking for Marzocchi fork manual including NTX 350/650 forks
« Reply #4 on: May 06, 2025, 06:27:23 PM »
This any help? https://www.guzzitek.org/gb/ma_us_uk/350750NevSPTargNTXXPA_At(GB).pdf

Not really. I assume the Guzzi parts diagrams will have Guzzi-specific part numbers, and the Guzzi service instructions—just like for the Dellorto carbs—won’t be as specific. Seeing that these forks are pretty old now, I’d prefer to have a manual straight from the manufacturer.
Current: '18 Guzzi V7 III Rough, '17 Guzzi V9 Bobber, ‘78 BMW R80/7, 1986 Sputnik sidecar

Previous: '16 Guzzi V7 II Stone, ‘15 Ural Gear Up, '11 Suzuki TU250X, ‘86 Guzzi V65 Lario, '78/‘80 Honda CX500, '77 Kawasaki KZ400 Special

Offline guzzisteve

  • Gaggle Hero
  • *****
  • Posts: 12453
  • "Just Ride It"
Re: Looking for Marzocchi fork manual including NTX 350/650 forks
« Reply #5 on: May 07, 2025, 09:15:45 AM »
To the best of my knowledge the same on 650TT are Marzocchi M1R internals at 40mm tubes, what I used to rebuild forks on a 650TT
The only book I could find is the one Charlie posted, I used it in the 90's for the TT rebuild before I knew computers there was only paper & house phone.
You could call MarzocchiMotor in Italy
« Last Edit: May 07, 2025, 09:38:42 AM by guzzisteve »
"Pray through Carlo & your bike shall be healed"
Location: Planet Earth

***Wildguzzi Official Logo High Quality 5 Color Window Decals Back In Stock***
Shipping in USA Only. Awesome quality. Back by popular demand. All proceeds go back into the forum.
Best quality vinyl available today. Easy application.
Advertise Here
 

20 Ounce Stainless Steel Double Insulated Tumbler
Buy a quality tumbler and support the forum at the same time!
Better than a YETI! BPA and Lead free.
Advertise Here