Cagiva Mito 125 Mikuni carb TM35 35mm Carb Jetting / Strip down

-


Buy our Cagiva mito owners technical bible here 

Cagiva Mito ultimate workshop manual bundle





Cagiva Mito 125 tm35 35mm strip down video added to basic maintenance post .

Cagiva Mito 125 Mikuni carb TM35 35mm Carb Jetting / Strip down




The Mikuni TM35 is the "holy grail" of carburetors for the Cagiva Mito 125. Standard on early 7-speed models and high-end racing setups, this 35mm flat-slide carb offers a massive performance boost over the standard 28mm Dellorto. However, with increased performance comes the need for precise maintenance.

If your bike is stuttering or failing to hit the powerband, a thorough strip-down of the TM35 is often required to clear the delicate internal passages.

Mikuni TM35 Original Factory Settings ('95 Racing):

  • Main Jet: 310

  • Pilot Jet: 45

  • Jet Needle: 6AEL4-60 (4th clip from bottom)

  • Throttle Slide: 5.5

  • Air Screw: 1.5 turns out from closed

Step-by-Step Strip Down Guide:

  1. Safety First: Drain the fuel bowl into a glass jar. Check for debris or water contamination—even tiny particles can block the TM35's sensitive jets.

  2. Slide Removal: Unscrew the top cap and carefully pull out the flat slide and needle. Inspect the needle for wear or bending.

  3. The Float Bowl: Remove the four screws at the base. Be careful with the gasket; these can be hard to source individually.

  4. Jet Cleaning: Remove the Main Jet and Pilot Jet. Use a dedicated carb cleaner or, better yet, an Ultrasonic Cleaner to ensure the internal "emulsifier" holes are clear.

  5. The Float Valve: Inspect the needle valve tip. If it has a "ring" worn into the rubber, it will cause the carb to leak fuel from the overflow.

Tuning Tip:

If you are running an "Aftermarket" setup or a sports exhaust, many owners find success moving to a 350 Main Jet and a 20 Pilot Jet to prevent the bike from running too lean at high RPM.

Cagiva Mito 125 Mikuni carb TM35 35mm Carb Jetting / Strip down


MIKUNI TM35MM

mito evo racing '95 original settings mikuni tm35:

throttle slide 5.5
jet-needle 6AEL4-60, 4th clip from below, 2th from top
pilot jet 45
main jet 310
air screw 1.5 turns from closed

mikuni tm35-1 'aftermarket' setting:

throttle slide 6.0
jet-needle 6EN11-53, 3th clip
pilot jet 20
main jet  350




 its always advisable after any change to do a plug chop test (see below) to test combustion conditions , this will give a clear indication of the jetting state , also its recommended to increase jets size 5 points for any sports airfilter or exhaust fitted again do the plug chop test to ensure correct running conditions 





-----------------------------------------------------------------------------------------

Mikuni tuning guide

Mikuni carb manual



You could just dump it all in your ultrasonic cleaner , get one they are excellent 

try Ebay uk here or Amazon uk here  

Cagiva Mito 125 Mikuni carb TM35 35mm Carb Jetting / Strip down





Comments

Post a Comment

No spam

Popular posts from this blog

Cagiva mito 125 Cylinder Barrels , Cylinder heads and exhaust information

-
Image
Cagiva mito 125 for sale here on Ebay UK Cagiva mito 125  parts for sale here on Ebay UK Search ebay for a replacement mito barrel on Ebay UK now Cagiva Mito 125: Cylinder Barrel & Head Identification Guide One of the most confusing aspects of restoring or tuning a Cagiva Mito 125 is identifying which cylinder barrel and head combination you have. Over the decades, Cagiva produced several versions—ranging from the early 7-speed Mk1 models to the final SP525—each with unique port timings and combustion chamber shapes. Using the wrong piston-to-cylinder combination or mixing incompatible heads can lead to poor performance or catastrophic engine failure. Use the codes below to identify your setup. Common Cylinder Barrel Codes The identification code is usually cast into the side of the barrel, near the base or the exhaust port. 73037: The "Standard" Evo barrel found on many 6-speed models from 1994–1999. Known for reliable power and good port timing for street use. 66650:...
Read more

DERESTRICTING THE CAGIVA MITO EVO 125

-
Image
Cagiva mito 125 for sale here on Ebay UK Cagiva mito 125  parts for sale here on Ebay UK  How to Derestrict the Cagiva Mito 125 (Full Power Guide) The Cagiva Mito 125 is famous for being one of the fastest learner-legal bikes ever made, but many are still restricted to 15bhp. To unlock the full 30bhp+ potential of the Mito Evo engine, you must remove the factory-fitted bottlenecks. IMPORTANT: You must perform all three steps below at the same time. If you derestrict the air and exhaust without re-jetting the carb, the engine will run lean and likely seize within minutes. The 3 Stages of Mito Derestriction 1. The Exhaust Expansion Chamber The standard exhaust has a "plenum chamber" (a small blind pipe) welded near the manifold. This disrupts the exhaust pulses and kills power. The Fix: Use an angle grinder to cut off the plenum chamber, weld a patch over the hole, and grind it smooth internally. Alternatively, swap to a Giannelli or Arrow sports exhaust for an immediat...
Read more

Cagiva mito 125 wiring diagrams - electrics - electrical

-
Image
Buy our Cagiva mito owners technical bible here   Cagiva Mito ultimate workshop manual bundle Im going to try to turn this post into a complete electrical and testing of electric components as im learning more about electrics myself . if your interested in learning motorcycle electrical repairs i recommend this book its excellent, ive read it now 4 times over and over trying to master it. If you read this and absorb it you will be an expert on you bikes electrics , reading your manual is too complicated. Cagiva Mito 125 Electrical Troubleshooting & Wiring Guide Welcome to the ultimate digital resource for Cagiva Mito 125 wiring diagrams and electrical systems. Whether you are restoring a classic Mk1 7-speed , maintaining an Evo , or troubleshooting the modern SP525 , having an accurate electrical map is essential for any DIY repair. The Cagiva Mito’s Italian electrics are legendary, but they can be complex. This guide is designed to help you identify CDI pinouts , rectifier c...
Read more