| Diagram | Fig. 8 — CARBURETOR TR7RV · ref 17 |
| Subsystem | fuel |
| Listed in parts books | 1976–1978, 1980 |
376/100 Main jet (270)
A 270 main jet (376/100) for the Amal MK I Concentric carburetor used on the TR7RV.
This is a main jet for the Amal MK I Concentric carburetor, listed in the parts books as a 376/100 main jet with a jet size of 270. Main jets like this control fuel delivery through the mid-to-upper throttle range, and swapping to a different size is one of the more common ways to fine-tune a Concentric carb once you've got the rest of the setup sorted.
Read more
The catalog places this jet on the TR7RV, fitted with the Amal MK I Concentric carburetor. If your bike runs a different jet size stock, changing jets is a normal part of tuning for altitude, exhaust changes, or air filter changes, but get the rest of the carb (needle, slide, float height) checked at the same time since jet size alone won't fix a mixture problem caused by something else.
If you're not sure whether 270 is the right size for your application, bring in your current jet or call ahead with your bike's setup and we can talk through it before you order.
Sorry if we got something wrong here. If you think this information isn't correct, .