OPmini's latest activity

Hey guy, where I live in Phoenix it normally gets over 110 degrees in the summer. I am looking for an additional way to cool my...

Rope and center round plastic mechanism that engages the starter cup.

the cheap 212 and 420 starters break gx390 starters dont break mine hasnt broke yet

I have gone through at least 4 gx390 pull starters on my built predator 420 in the last 5 months, with the rope and plastic breaking. I...

Thanks, guys, I rehoned and put new rings on, as well as broke the rings in with conventional oil revving up and down.

Been consumed by work seven days a week for a month so I haven't had time for anything extra. I did take possession of the boat which...

I would make sure 1. jets you are using are right for your elevation 2. your valves have the correct amount of lash Also check if your...

Try swapping to the stock jets and see if the same thing happens.

Like fire coming through the carb? geez

if you want i guess you could

Yea i've already ran the numbers in a calc but I want to know if there are any side effects: barely any torque, belt wears faster

built predator 420cc

its a minibike built 420 34mm carb 10t front sprocket coming out of CVT 50t rear 19in tire

Does the carb float even work? it looks like the carb is at an angle

No idea, these jets should work tho: Amazon.com : OMB Warehouse Jet Kit for GX340 GX390 and Predator 420cc : Garden & Outdoor