Fuel issue? By mtmike (Read 438 times)

[mtmike]

I recently bought a ZNEN 150T-18 from a private party. It's 5yrs old, with only 500 miles on it, as it didn't get used much. The first time I took it for a longer ride, it died suddenly after about 20 minutes. After it sat for several minutes, it started again, but only ran for a mile or so, then died again. It does that repeatedly: sit a few minutes, then go a mile or so, then die. I took it to a shop, and they said the carburetor was bad, and replaced it. However, it didn't solve the problem. Before I take this potential money-pit back, does anyone have any ideas?

[jct842]

check the valves, they need adjustment. There are threads here that explain exactly how to do it. It is not impossible to do. john

[kepps1280]

My BMS Patriot 150 (Znen 150T-12) did the same thing last year at approx. 60 miles. I changed the carb too. Turned out to be the fuel pump (petcock). Check that.

[gatekeeper]

Sounds like valves to me. Adjust to .004 inches on the intake and .005 inches on the exhaust. Here is a tutorial. Really not too hard to do. scooterdoc.proboards.com/index.cgi?board=engine&action=display&thread=140