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Honda, Yamaha, Kawasaki, Isuszu Generators

Carburetor Jetting Honda Engine (Clone Actually)


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  #1  
Old 07-10-2019, 12:51:10 PM
Birken Vogt Birken Vogt is offline
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Default Carburetor Jetting Honda Engine (Clone Actually)

Against my better judgement I took on a project to repair this Honda clone generator.

It is a very close copy of a Honda so I am wondering if someone can tell me what the jetting is supposed to be.

The engine has a propane spud in the carburetor and it runs fine on propane but it will not run on gasoline without full choke.

The customer has replaced the carburetor 2x at the insistence of the company, with the same results. But he lost the original carb so I can't compare.

Everything else, fuel flow, etc. checks out and the carb looks brand new inside, because it is.
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Old 07-10-2019, 04:42:14 PM
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Default Re: Carburetor Jetting Honda Engine (Clone Actually)

What engine clone is it. What's the corresponding Honda engine model. What Kw is the gen.
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Old 07-10-2019, 05:51:31 PM
Thaumaturge Thaumaturge is offline
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Default Re: Carburetor Jetting Honda Engine (Clone Actually)

Stock jet on a predator 212cc (~GX-200) is 0.038"
You can also get performance jets here:https://www.gopowersports.com/clone-...redator-212cc/

But, best way to proceed is to obtain a micro drill bit set and a pin drill. Find which bit just passes through jet and move up one bit at a time till engine runs as desired. Mistakes can be soldered shut and redrilled.
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https://www.walmart.com/ip/25-Pcs-Pr...-Set/444121146
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Old 07-10-2019, 10:38:15 PM
Birken Vogt Birken Vogt is offline
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Default Re: Carburetor Jetting Honda Engine (Clone Actually)

Sorry, it is a 420cc engine.

Closest I know of is GX390 but did Honda make one bigger?

Brand of generator is Heavy Duty Power Systems and brand of engine is Jiangsu Jiangdong.
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Old 07-11-2019, 12:01:56 AM
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Default Re: Carburetor Jetting Honda Engine (Clone Actually)

This source might help. Jet size should be stamped on it. Remove bowl, jet in middle of float. Use GOOD fitting screwdriver to remove. Easy to muck up those threads.
Doc
https://www.bmikarts.com/Main-Carbur...yABEgKOIPD_BwE

This place offers full set of jets in mm sizes for about $25 +sh.
https://www.bikeberry.com/catalogsea.../?cat=0&q=Jets
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Old 07-11-2019, 01:26:24 AM
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Default Re: Carburetor Jetting Honda Engine (Clone Actually)

Yeah the Chinese did not stamp a number on this one. Saves money I guess. So I am not sure what is in there.
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Old 07-11-2019, 07:46:59 AM
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Default Re: Carburetor Jetting Honda Engine (Clone Actually)

I did a quick search and came up with https://www.jackssmallengines.com/ja...9/carburetor-1

This particular model uses a #95 main jet. I suppose you could start there and see how it runs.
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