Magnum 425 flooding
#1
Magnum 425 flooding
Machine ran good then gradually starting running rough, bogging,etc. Always had a pop through exhaust if you held the throttle open for a bit. It seems to be flooding. Gas smell in oil. I pulled the carb and seems to dump fuel into cylinder when cranking over.I'll replace the needle and seat. Anything else to check?
#3
Magnum 425 flooding
its soaking as we speak. i've ordered a needle and seat. Worked on Mikuni's for 2 strokes, but not 4 stroke. Seems similar. How does the vacuum diaphram work? Seems to me that the diapram moves the slide valve and needle jet similar to the throttle cable on the VM series carbs. Are these fussy carbs to work with?
Thanks
Jeff
Thanks
Jeff
#4
Magnum 425 flooding
You pretty well answered your own question about carb differences! Not fussy carbs,cable just opens butterfly and vacuum does the rest. Not as quick as flat slides and such,but responsive enough. Needle and seat wear,float arm wear basically only problem area,BUT same for other carbs also. Good luck
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#8
Magnum 425 flooding
Well... I pulled the carb apart, soaked it in cleaner, replaced the needle and seat. It now overheats. In setting the float level, it says 14.5 - 14.7 mm from from base to float. What part of the float? The metal plate that the needle clips on? If so, where on the plate?
In reading the manual, correct float height helps meter the fuel. Perhaps I have it incorrect and its running lean? I'm going to change the thermostat as well just to be sure. I was going through the wiring and found the wire for the fan was cut so I fixed that. Any other suggestions?
Thanks in advance
Jeff
In reading the manual, correct float height helps meter the fuel. Perhaps I have it incorrect and its running lean? I'm going to change the thermostat as well just to be sure. I was going through the wiring and found the wire for the fan was cut so I fixed that. Any other suggestions?
Thanks in advance
Jeff
#9