Properly sized throttle cables are essential for safe and correct adjustments to the throttle and carburetor. This throttle cable is used from the throttle twist-grip to the junction block and is suitable for the US-specification 1975 Norton 850 Commando Roadster and Interstate models with twin Amal 932 Concentric carburetors. (2) lower cables are used in the original throttle cable assembly. This listing is for (1) upper cable.
This premium-quality cable from Barnett features a threaded cable anchor and guide tube with an inline adjuster, and a friction-reducing nylon lining for easy operation and longevity. Overall length is approximately 29-1/2″, with a sheath length of 25-1/2″, and an inner wire free length of 2-1/2″. Made in the US.
The cable is pulled by the motion of the twist grip, allowing it to raise and lower the sliding fitting in the junction block. The lower cables are also fitted to the internal sliding fitting of the junction block and raise and lower the carburetor slides. Fine adjustments to cable lash are made by the inline barrel adjusters on the upper cable and the carburetor top cap adjusters.
The twist-grip end is threaded directly into the lower switch cluster, with the cable end captured by the rotor in the throttle assembly. The junction block must be opened to allow the upper cable to be positioned in the internal sliding fitting, while the lower cables are fitted to the lower end of the sliding fitting. The junction block is then screwed back together with all (3) cables forming an assembly.Â
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