Ducati Monster Forum

Originally written by mitt 2005.

This mod was to clean up 2001 and newer U.S. Monsters (removing California emission requirements). Tools needed are metric allen wrenches, screw driver, cutting tool, and pliers. To buy are 2 - M5 bolts, 2 large washers, RTV sealant, black wire ties, optional Y fitting.

After I did this, my bike seemed to have a slightly stronger gasoline smell. I think it is the tank venting to atmosphere, and not into the charcoal. Perform this mod at your own risk.


    * Remove the seat and prop the tank.
    * Remove the side panel covering canister.
    * Find the hoses that are connected to the canister (3).

(http://farm3.static.flickr.com/2094/2535394098_49d9334f12_o.jpg)

(http://farm3.static.flickr.com/2091/2535394102_4f7e0e8d89_o.jpg)

(http://farm4.static.flickr.com/3041/2535394112_0e96fbdf95_o.jpg)

(See Ducati USA and Euro parts diagrams below for reference)

    *Take off hose clamps on throttle bodies.

(http://farm4.static.flickr.com/3018/2535394114_484dd113fe_o.jpg)

    * Disconnect T fitting, and save.
    * First note location, then cut wire ties that are holding hoses, and the slide hoses out.

    * Disconnect hoses from canister.
    * Take out 2 large allen bolts holding canister mounting plate.
    * Slide plate out.
    * Slide washers in where plate was and reinstall bolts.
    * Cut drain and vent hoses appropriate length and splice together using the T from the bodies or a Y from your local auto parts store.

(http://farm4.static.flickr.com/3017/2535394120_3ea033ffc0_o.jpg)

    * Remove OEM fittings and washers from bodies.
    * Install short M5 bolts and OEM washers and a dab of RTV to seal. If there is a leak at the body, the bike will not run right.
    * Replace any wire ties you cut off.
    * You will probably have to cut an inch off the drain/vent hose end near the swingarm to account for the Y you added.

(http://farm3.static.flickr.com/2315/2535424912_773a8f3fcb_o.jpg)

This is what is removed:

(http://farm4.static.flickr.com/3216/2535394108_a288ab8cac_o.jpg)

mitt

Ducati Parts Diagrams for Reference:

USA tank plumbing
(http://farm4.static.flickr.com/3077/2535424922_32bb405c35_o.gif)

Euro tank plumbing
(http://farm4.static.flickr.com/3067/2535424914_616048a693_o.gif)

Euro throttle bodies
(http://farm3.static.flickr.com/2341/2535424916_71cf47003d_o.gif)

I'm curious as to the enforcement of the CA laws on not removing the canister.

I'm on a 696 and am considering getting rid of the plastic, meaning i'll have no where to put the canister if i leave it on. 

Do the  [leo] actually notice?

No, they don't notice or care.  That said, there are motorcycle smog laws being considered in CA that might require your emissions stuff.  It's reversable.  Just keep your canister, etc in a box. 

This may be a dumb question but will anything leak with the removal of the hoses?