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#1
05-16-2010, 08:13 PM
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149 woes
I just got my 149 back together after a catastrophic bolt breakage on the hydro. I ended up replacing the driveshaft, the coupler on the rear of the motor, the rag-joint and various other bits and pieces.
One problem I'm having is the pin the goes in the driveshaft at the motor. While I was mowing today, it fell out three times. Luckily I found it each time. Now, this is the correct pin that I had to hammer in. I don't understand why it won't stay put. Any hints or ideas to making it stay? The other problem I'm having is more motor related. I can open the motor wide open and engage the blades. As soon as I start rolling and mowing, the motor loses rpm's. It doesn't feel like the motor is being lugged or bogged down, just that it simply loses rpm's. I readjusted the carb per the manual procedure w/out much improvement. Could this be a symptom of compression loss? Caked up valves? Headgasket? Points? Sorry for being so long winded. Thanks, Ian 
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#2
05-16-2010, 08:42 PM
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If the pin is falling out, I think the driveshaft might be worn. You can put a hose clamp around it to hold it in, but I've had those fall off too.
If the engine is loosing RPM, it's bogging down. Does it start hard? It sounds like the timing is off. I just posted a how-to on static timing in the tech library section.
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#4
05-16-2010, 09:15 PM
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Quote:
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Pat Benner Haskell OK Keep the Deck down and the Throttle open!!!
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#5
05-16-2010, 09:25 PM
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Thanks for the quick replies.
The driveshaft is brand new from one of the vendors here, so I don't think it's already wallowed out. The mower does seem like it starts a little hard. I'll check out your write up on the static timing(MattG). Ian
__________________
CC 125 1980 Scout II 1973 IH Travelette 1210(3/4ton)
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#8
05-16-2010, 10:32 PM
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i dont understand how cubs can start hard. all my tractors barely turn over and there started. even after sitting for a couple weeks
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Nick.  Cub cadets 100, 125, 86, 108, 109, 128, 129, 129, 149, 149, 169, 1450, 1650 and a handfull of parts tractors. #40 box blade, ih back blade, rear ih rock rake, #2 cart, windbreaker soft cabs, windbreaker hard cab, cozy cab, kwikway loader , wards corn planter, brinly plows, culitvator, rear blade, disc and the usual decks, snowblowers and 2 tillers
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#10
05-23-2010, 08:44 PM
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Just to update
First: I tried another brand new pin in the brand new driveshaft through the brand new coupler and it still fell out. I ended up putting a bolt in there. I hated to do that, but I needed it to mow. Second: I was never able to find my timing marks. I looked through the half-moon hole on the right side by the s/g and never saw it. I bet I spun the motor 5 times looking for them. I did check the gap on the points and opened them up to .020. I also put in a new Autolite plug w/ a new plug wire. Whatever I did made a difference. I was actually able to mow this afternoon without a hitch. Thanks as usual for all the help. Ian
__________________
CC 125 1980 Scout II 1973 IH Travelette 1210(3/4ton)
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.
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