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#21
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Pulley size is correct. I checked engine rpm today and it’s 2600. I think it’s safe to say I found the problem! It appears to be the governor is not allowing higher rpm. I am able to move the linkage manually and it will rev up. Thank you for the help gentlemen. Now I have to figure out this governor issue.
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#22
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Quote:
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Cooperino 100, 104,125, 126, 2x129's, 804, 1211, 1641 |
#23
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I’m sure of it. I “reset” the governor as per service manual. I have to figure out what other adjustments there are. There is a threaded rod that goes to the throttle plate, I spun that all the way in and it didn’t make a difference.
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#24
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Do you have a tachometer? There should be hi rpm stop on the side of engine. Procedure for hi rpm is in the k series engine manual. Max 3600 rpm.
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Steven __________________________________________ 127 NF, spring assist, 36" IH Danco BB-36 snowthrower, 42" mower deck. CW-36 snowthrower, 42" NF blade. QA42A blower, 126,127,149,1720. |
#25
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There is a spec for the correct length of the governor control rod, it needs to be a certain length for what ever engine you are working on, to start the governor adjustment.
I believe This is spelled out the engine manual. I have that info somewhere but can't put my finger on it at the moment. Screwing around with the length of that rod probably negated any adjustment you made on the governor arm. The carb throttle valve needs to be wide open at the same time the governor arm is at the wide open position. |
#26
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I was adjusting the spring between the governor and the throttle cable linkage. It appears that if I set the spring in the holes that give it the most tension, i was able to get a little over 3200 rpm. That tells me the spring is probably too weak and should be replaced, if I leave it the way it is, I will never be able to adjust governor sensitivity. I will also adjust the rod back to the correct length, I did get a PM with a link to detailed governor adjustment instructions ( thank you ) that did mention the rod length.
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#27
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Qa36 snow theower
Struggled for 3 years with a beat up QA36 on our 105. Never checked max rpm with a tach. Bought a cheap laser tach last year, and it was maxing at 2600. Finally got it to 3700 unloaded, and “holy smoke” ...35-40 feet !! Three years of “assuming” RPM was correct, ignoring advice on this forum, and I could have been having FUN ! GOOD LUCK !
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#28
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Since you are having such good luck maybe we can get on a roll and figure out how to fix my QA42A. Everything basically works, I have good bearings, a new chain and sprocket, and fresh grease in the gearbox. The problem is the auger has a bent shaft on one side. Just a little bit, but enough that the auger is out of balance and the bearing wobbles on the shaft and shakes the hell out of everything. I guess the PO hit something and decided to sell it to me and forgot to mention the auger is junk. Caveat emptor sucker!
Question, can I bang on the shaft with a sledge and a block of wood until it's straight? Otherwise, I'll keep my eyes opened for a replacement.
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Rusty 149 project with: QA42 snow thrower 38" deck Barn fresh 1811 with: 44c mowing deck QA42A snow thrower 42" snow blade |
#29
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I'd take the auger out and set it up on "V" blocks and figger out how and where it is bent, then heat the shaft up and gently bend it straight checking as you go.( use Oxy/Ace torch) You can use jack stands to hold it up as you check and get it real close if you are patient. Then re assy and it should be good to go. (I doubt the auger tube is bent) |
#30
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I think there are 3" rods welded in each end. The bent rod is on the sprocket side. The rod is about 1" thick so I expect the weld or something other than the rod is actually bent.
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Rusty 149 project with: QA42 snow thrower 38" deck Barn fresh 1811 with: 44c mowing deck QA42A snow thrower 42" snow blade |
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