mr.farmall
Active Member
- Joined
- Mar 13, 2014
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Toro 38180 sn# 0014124 Suzuki 47pk9 engine with original Mikuni carburetor. 1990 model. a ccr2000 unit.
This machine had bad gas left in over the summer and was completely plugged come winter. It was taken apart and cleaned in a heated ultrasonic cleaner multiple times to get it cleaned out. All the jets and port were blown out with air and reassembled. it started on the first pull without any priming and ran very well, then about a week later when it was needed, it wouldn't start. It was flooded and spark plug very wet. After cleaning the plug, tried to prime and choke it to start and it just fouled the plug again. (it has a good spark)
Tried pulling the starter with the plug out to clean out any gas in the cylinder, replaced the plug and choked it but no priming; it fouled the plug again. Remove plug, clean and replace, try to start again with no choke and no priming, it started first pull and ran fine. Cleaned the driveway well and never sputtered or stalled.
Next day it would not start, plug fouled and wet. tried to clean and restart many times but it would not start, always fouled with wet gas.
Took the carburetor apart again but found nothing wrong.
While looking at Toro's break down of the carburetor (form 3313-923), I see a piece called "spacer float" part #27 . I'm not familiar with it and didn't find it in the carburetor. Is this piece something that is only found in some models or is it really missing from this unit? What is it's purpose and could it cause this flooding problem?
I originally suspected that the float wasn't shutting off the gas flow and over filling but the float and shut off needle worked correctly. All jets, needles and ports were clean, float had no gas in it. float spring was in place and working. Pilot jet was set at 1 turn from bottoming out.
I was tempted to just replace the carburetor, but it's pricey. I Did find an affordable aftermarket carb made by Flip manufacturing stating it is a direct replacement for the original 81-4690 carb. (supersede #95-7935)
If anyone has run into this problem, please enlighten me a little.
Rex
This machine had bad gas left in over the summer and was completely plugged come winter. It was taken apart and cleaned in a heated ultrasonic cleaner multiple times to get it cleaned out. All the jets and port were blown out with air and reassembled. it started on the first pull without any priming and ran very well, then about a week later when it was needed, it wouldn't start. It was flooded and spark plug very wet. After cleaning the plug, tried to prime and choke it to start and it just fouled the plug again. (it has a good spark)
Tried pulling the starter with the plug out to clean out any gas in the cylinder, replaced the plug and choked it but no priming; it fouled the plug again. Remove plug, clean and replace, try to start again with no choke and no priming, it started first pull and ran fine. Cleaned the driveway well and never sputtered or stalled.
Next day it would not start, plug fouled and wet. tried to clean and restart many times but it would not start, always fouled with wet gas.
Took the carburetor apart again but found nothing wrong.
While looking at Toro's break down of the carburetor (form 3313-923), I see a piece called "spacer float" part #27 . I'm not familiar with it and didn't find it in the carburetor. Is this piece something that is only found in some models or is it really missing from this unit? What is it's purpose and could it cause this flooding problem?
I originally suspected that the float wasn't shutting off the gas flow and over filling but the float and shut off needle worked correctly. All jets, needles and ports were clean, float had no gas in it. float spring was in place and working. Pilot jet was set at 1 turn from bottoming out.
I was tempted to just replace the carburetor, but it's pricey. I Did find an affordable aftermarket carb made by Flip manufacturing stating it is a direct replacement for the original 81-4690 carb. (supersede #95-7935)
If anyone has run into this problem, please enlighten me a little.
Rex
