Throttle disassembly (Tommaselli Super Pratic B)

Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models

Created: 2011 August 15

Updated: 2011 August 18

Fully assembled. — Fully assembled.
Photo courtesy of Gregory Bender.

Fully assembled. — Fully assembled.
Photo courtesy of Gregory Bender.

Fully assembled. — Fully assembled.
Photo courtesy of Gregory Bender.

Fully assembled. — Fully assembled.
Photo courtesy of Gregory Bender.

Remove the plastic anti-friction ring. — Remove the plastic anti-friction ring.
Photo courtesy of Gregory Bender.

Tube is secured to the body with a retaining ring. — Tube is secured to the body with a retaining ring.
Photo courtesy of Gregory Bender.

Pop it out with a screwdriver. — Pop it out with a screwdriver.
Photo courtesy of Gregory Bender.

Rotate the tube to retract the chain from the channel and withdraw the tube from the body. I've already removed the chain cover as well as the friction screw and spring. — Rotate the tube to retract the chain from the channel and withdraw the tube from the body. I've already removed the chain cover as well as the friction screw and spring.
Photo courtesy of Gregory Bender.

Slide the metal thrust washer off of the tube. — Slide the metal thrust washer off of the tube.
Photo courtesy of Gregory Bender.

Throttle tube with pull chain. — Throttle tube with pull chain.
Photo courtesy of Gregory Bender.

Throttle tube with pull chain. — Throttle tube with pull chain.
Photo courtesy of Gregory Bender.

Throttle tube with pull chain. — Throttle tube with pull chain.
Photo courtesy of Gregory Bender.

Rubber friction material fit to the throttle body. — Rubber friction material fit to the throttle body.
Photo courtesy of Gregory Bender.

Rubber friction material (left), thin metal backing plate for the friction material (so the screw does not push through the rubber friction material), friction screw and spring. — Rubber friction material (left), thin metal backing plate for the friction material (so the screw does not push through the rubber friction material), friction screw and spring.
Photo courtesy of Gregory Bender.

Close up of the friction block. Soft rubber material is 11 mm × 21 mm × 4 mm. — Close up of the friction block. Soft rubber material is 11 mm × 21 mm × 4 mm.
Photo courtesy of Charlie Mullendore of Antietam Classic Cycle.

Empty throttle body. You can see the protrusions that keep the rubber friction material and metal backing plate from rotating when the throttle tube is rotated. — Empty throttle body. You can see the protrusions that keep the rubber friction material and metal backing plate from rotating when the throttle tube is rotated.
Photo courtesy of Gregory Bender.

All of the parts of the throttle. — All of the parts of the throttle.
Photo courtesy of Gregory Bender.