QuestionQUESTION: John
I tryed the valve adjustment,no change. Pulled off carb and blew it out and made sure there were no restrictions.I also adjusted the carb screw.How many turns from turning it all the way in should it be set at? I have it at about 2. I noticed that it stalls out if you bump up the Rpms from about midrange to full throttle. It just dies out, could it be something with the governor.
ANSWER: Hello Paul:
No, this is Not a Governor Problem. From your Description it Sounds like this May be a Cam Problem. If the Lobes on the Cam Become Worn Down, then All the Valve Adjustments you Make will Never Allow the Engine to Rev Over 1/2 Throttle. If you are Sure the Piston was at TDC on the Compression Stroke when you Set the Valves and the Carburetor is Clean, then the Cam is the Next Component to Check. You can View a Breakdown/IPL of the Mower/Engine at this Site Addy, http://hayward.arinet.com/scripts/EmpartISAPI.dll?MF&app=ASP&lang=EN&TF=Mainfram and Select the Catalog American Honda. If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.
Good Luck
Respectfully
John
PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: John
The engine will go to full throttle if you move the throttle very slowly.The serial # on the engine is GC05-1385621 and the # on the carb is 30B evg. This carb was replaced is this the right carb for this engine. Also this engine sat idle for 2 years before the carb was replaced and it ran fine before it sat. I really don't think the cams are worn but is there an easy way to check them without completely dismantling the engine? Once at full throttle it runs until you start to open up the pressure valve on the washer.
ANSWER: Hello Again Paul:
My Mistake Paul. I Forgot to Give you the Air Mixture Screw Setting Instruction File. Now Setting the Air Mixture Screws: ****Turn the Idle Air and Main Air Mixture Screws In Until SNUG **Do Not Jam** Then Reverse Both Screws 1 1/2 Turns. Holding the Throttle Full Open, Start the Engine. Turn the Main Air Mixture Screw Clockwise Until Proper Revs are Obtained. Occasionally you May have to Turn this Counter Clockwise to Achieve the Proper Revs. Now Allow the Engine to Idle. Set the Engine Idle Screw (Not Idle Air) so the Engine will Stay Running if Required. Now Set the Idle Air Mixture Screw so there is No Hesitation when Throttling from Idle to Full Throttle. Reset the Engine Idle if Required.**** I will be Doing Research in the Shop Using a GX340 Engine Today to Determine if I May have Forgotten Anything and will Follow Up on the Results Tonight. If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.
Good Luck
Respectfully
John
PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.
Respectfully
John
---------- FOLLOW-UP ----------
QUESTION: Hi John
I only have 3 adjustments that I can make first is the # 5 screw (which I believe is the idle air screw)second is on the top of the carb which would control the low idle and the third is the throttle control which is where the full throttle would stop against. I might be misinterpreting your instructions but it seems you gave me 4 adjustments.So where is the 4th or is there only 3? How did you make out with the research on the GX 340 motor in the shop?
AnswerHi Paul:
You have the Idle Air Mixture, High/Full Throttle Air Mixture and the Engine Idle Screw. The Carburetor May Only have the Idle Air and Engine Idle Screws. Set these as Described and Forget About the High/Full Throttle Air Mixture. It is Preset from the OEM and is Not Adjustable. That is One of the Reasons for Soaking the Carburetors. With No High/Full Air Mixture Adjustment, the Main Jet has to have a Through Cleaning to Operate as Designed. Any Varnish at All will Cause the Surging. If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Thanks.
Good Luck
Respectfully
John
PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Thanks.
Respectfully
John
