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surging question
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surging question
i adjusted the carb adjustment but it still surges a bit. is there something on the governor that i can adjust?
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Re: surging question
I will offer the simple fix.... clean the jet with a piece of phone wire.
If it seems to be OK at an idle or with 1/2 choke, it is pretty often a chunk of something is restricting the fuel flow.
After that there is an adjustment on the governor. I am not too wise about it, but it's in the service manual.
If it seems to be OK at an idle or with 1/2 choke, it is pretty often a chunk of something is restricting the fuel flow.
After that there is an adjustment on the governor. I am not too wise about it, but it's in the service manual.
1971 Cub (Rufus) 1950 Cub (Cathy) 1965 Lo Boy Fast Hitch (Nameless III) 1970 Cub 1000 Loader & Fast Hitch (Lee)
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Re: surging question
Is it surging at all throttle settings, or just at idle?
The bumper spring on the governor can be turned in, but if you turn it in too far, it will affect low idle RPM's.
The bumper spring on the governor can be turned in, but if you turn it in too far, it will affect low idle RPM's.
Screwstick #3934
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Re: surging question
Rob, is this a new problem? If its old, it could be mismatched parts in the carb.. Ed
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1950 cub demonstrator
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Re: surging question
Rob in NH wrote:it usually surges under load. ok at idle
Long time problem? Could be fuel flow, low fuel level in carburetor bowl, or partially plugged main jet. New problem, partially plugged main jet.ScottyD'sdad wrote:Rob, is this a new problem? If its old, it could be mismatched parts in the carb.. Ed
I have an excuse. CRS.
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- Tractors Owned: 1947 circle cub
1950 cub demonstrator
1957 cub
1967 cub - Circle of Safety: Y
- Location: NH, Kingston
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Re: surging question
I vote for the main jet..... Can't hurt to clean the strainer, fuel bowl too.
Shut the fuel off, 3/8" wrench, let it drain as you pull the jet out (brass/bronze 'nut' on the side of the carb).
You can just blow it out too.... but a thin piece of soft wire works well.
Shut the fuel off, 3/8" wrench, let it drain as you pull the jet out (brass/bronze 'nut' on the side of the carb).
You can just blow it out too.... but a thin piece of soft wire works well.
1971 Cub (Rufus) 1950 Cub (Cathy) 1965 Lo Boy Fast Hitch (Nameless III) 1970 Cub 1000 Loader & Fast Hitch (Lee)
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