Need Help on Engine Break In?

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Yannik

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Hi,


Is there anything you have to do when starting the engine for the first time on a Redcat Rampage?


The reason I say that is yesterday, we started the Truck engine but before,


I pump the primer bulb a few time (3-5 times) until I saw the fuel in the bulb. After, I Open the choke and give it a pull or two. When the Truck started, I could hear the engine running way too fast so I played with a needle on the side of the carburetor but strangely it was not doing anything to lower the idle?


Now, I just realized there are two needles to adjust but I only saw one?


Another thing I'm not really sure about is how the choke works, can someone explain? If there would be a book called: "Redcat Manual for Dummies", I would be the 1st to get it. Lol ;)
 
If you look at the carb there are two adjustment needles, one is the low speed needle and one is the high speed needle. They're both clearly marked with an L and an H. I would reset them back to factory settings and see how it goes from there.

The settings are...

Low - Turn the needle clockwise until it stops, then turn it counter-clockwise 1 1/4 turns.

High - Turn the needle clockwise until it stops, then turn it counter-clockwise 1 1/2 turns.

These are base settings, so you'll have to adjust them once you get the engine broken in, but it should start and run without much hassle. The choke basically restricts air flow to the engine. So you're getting more fuel than air when the choke is on. This helps engine starting and should only be used when starting a cold engine, otherwise you risk pushing too much fuel into the engine which will flood it. And it's a pain in the ass to start a flooded engine.

Everybody has a different break in method. With my engines, I do a few warm up laps and give it hell from there. The ring needs to seat, and it's not going to seat properly if you putt around the yard. You need to put a load on it.
 
And just make sure when setting you're high and low needles. That you do not force them closed. Soon as you feel resistance stop. And then set back to the recommended setting. As far as brake in you will get many way's to do it :rolleyes: . My advice is to always let them warm up before hammering on them. ie time to warm up.

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Deluge said:
If you look at the carb there are two adjustment needles, one is the low speed needle and one is the high speed needle. They're both clearly marked with an L and an H. I would reset them back to factory settings and see how it goes from there.The settings are...Low - Turn the needle clockwise until it stops, then turn it counter-clockwise 1 1/4 turns.High - Turn the needle clockwise until it stops, then turn it counter-clockwise 1 1/2 turns.These are base settings, so you'll have to adjust them once you get the engine broken in, but it should start and run without much hassle. The choke basically restricts air flow to the engine. So you're getting more fuel than air when the choke is on. This helps engine starting and should only be used when starting a cold engine, otherwise you risk pushing too much fuel into the engine which will flood it. And it's a pain in the ass to start a flooded engine.Everybody has a different break in method. With my engines, I do a few warm up laps and give it hell from there. The ring needs to seat, and it's not going to seat properly if you putt around the yard. You need to put a load on it.
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Hi,Wow, How Ignorant I was, look at what I taught to be the Carburetor needle? View attachment 6494 No wonder the idle was not lowering! These two needles are really small so when we look, the first thing we see is that big screw like you see on the photo being pointed by the blue arrow but what function this screw has (if it has one) because it is not hard to turn?I also have a dummy question but I also need to know: What is the purpose of the choke? When the Truck is not started, the chock should point horizontal right? (not pointing down). Choke is off when it point horizontal or its the opposite! :confused: CARB With Arrow.webp

CARB With Arrow.webp

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the choke is to help it start up on a cold engine it will block the air flow allowing more gas into the motor and yes you are correct you don't want to leave it in the down position, once you hear it pop you turn it back horizontal and fire it up. the screw you are pointing to in the pic is the idle scree.
 
Hi Stygian,

So when the Truck is not started, it should be left horizontally right? If you leave it down by mistake when the truck isn't running, will it harm or prevent from starting? I just realized it that I accidently left it pointing down?
 
That's the idle screw. There's really no factory setting for that. I just screw it in until it barely touches the throttle shaft and give it a half a turn from there. The throttle shaft is the plate the tip of the screw makes contact with, just for clarification.
 
When the truck isn't running, you can leave it down. That won't matter. You don't want to leave it down when the truck is running. Just apply the choke when you're attempting to start it. Once it tries to fire up, lift the choke and give it a few more pulls until it starts. Super easy.
 
Great Deluge, I understand but when the truck isn't running, it doesn't matter if the choke lever points down or vertical? You said to put it down so it confuses me.

From what I understand, before you start the engine, the choke is pointing horizontal so you push it down only just to pull a few time than you put the choke back at the horizontal?

Choke off = horizontal

Choke on = down
 
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