Cuts out when it touches snow - Snowblower Forum : Snow Blower Forums
 
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post #1 of 9 Old 02-16-2013, 04:55 PM Thread Starter
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Cuts out when it touches snow

Friend gave me a mtd model #140 snowthrower . Replaced auger belt and cable (both were bad) started up,sounds good but as soon as it touches the snow it konks out. Checked the sparkplug and it looks good. I've heard it really has to warm up for awhile,is this true? Anyone?
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post #2 of 9 Old 02-16-2013, 05:18 PM
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can you please define "cable".

Did you trear down the carb and give it a good cleaning along with flushing the fuel system of and varnish from bad gas?

Last edited by woodtick007; 02-16-2013 at 05:25 PM.
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post #3 of 9 Old 02-16-2013, 05:27 PM
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Try this adjustment....see red highlighted section.



TO ADJUST CARBURETOR
The carburetor (see figure below) has been
pre-set at the factory and readjustment
should not be necessary. However, if the
carburetor does need to be adjusted, proceed
as follows:
Close the high speed adjusting screw(screw under carb bowl in dead middle) by
hand.
Carburetor
Idle Adjusting Screw
finger tight only)
Carburetor Bowl
High Speed Adjusting Screw
(Close finger tight only)
- Do not over-tighten.
, Then open it 1-1/4to 1-1/2turns.
- Close the idte adjusting screw by hand.
Do not over-tighten.
Then open it 1-1/4to 1-1/2turns_
Start the engine and let it warm up.
Set the throttle control to '_ (FAST). Adjust
the high speed adjusting screw in until
the engine speed or sound alters. Adjust
the screw out until the engine speed
sound alters. Note the difference between
the two limits and set the screw in the
middle of the range.
,, Let the engine run undisturbed for 30
seconds after each setting to allow the
engine to react to the previous adjustment.
Set the throttle control to _ (SLOW).
Adjust the idle adjusting screw in until the
engine speed drops, then adjust the
screw out until the engine speed drops.
Note the difference between the two limits
and set the screw in the middle of the
range.
If the engine tends to stall under load or
does not accelerate from low speed to
high speed properly, adjust the high
speed screw out in 1/8 turn increments
until the problem is resolved. Let the engine
run for 30 seconds between settings.
IMPORTANT: Never tamper with the engine
governor; which is factory set for
proper engine speed. Overspeeding the
engine above the factory high speed setting
can be dangerous, tf you think the enginegoverned
high speed needs adjusting, contact
your nearest Sears Service Center,
which has the proper equipment and experience

Last edited by Simplicity Solid 22; 02-16-2013 at 05:31 PM.
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post #4 of 9 Old 02-16-2013, 05:35 PM Thread Starter
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No, I didn't touch the carb yet. Was trying to find out if maybe it was something else first
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post #5 of 9 Old 02-16-2013, 06:10 PM
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What cable did you replace? Replace the spark plug even if it looks "ok". They are cheap and an easy thing to check off the list. Have you done a compression test? Its possible someone ran straight gas in the engine and the piston rings and cylinder are scored. Try spaying the outside of the carb with carb cleaner and then move the throttle manually with your finger or a screwdriver to make sure its moving freely. Does it run any better if you put it in snow with the choke partially on? That is a quick and easy way to compensate for an out of adjustment or fouled carb before making any adjustments.
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post #6 of 9 Old 02-16-2013, 06:25 PM Thread Starter
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I replaced the auger cable. I will check the carb next
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post #7 of 9 Old 02-16-2013, 07:21 PM
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aah a single stage snowblower, before you get started on the carb how is the auger belt

current machines
1-toro2450E-38419. 1-toro3000E-38435. 1-toro 3650E-38445
2-toro 521E-38052. 1-toro xl824pt 38086
1-.............,TORO XL 624ps..............
1-............, TORO XL 824ps..............
william
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post #8 of 9 Old 02-16-2013, 07:29 PM
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Quote:
Originally Posted by detdrbuzzard View Post
aah a single stage snowblower, before you get started on the carb how is the auger belt
Friend gave me a mtd model #140 snowthrower . Replaced auger belt and cable (both were bad)
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post #9 of 9 Old 02-16-2013, 08:27 PM
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Quote:
Originally Posted by woodtick007 View Post
Friend gave me a mtd model #140 snowthrower . Replaced auger belt and cable (both were bad)
i guess there is nothing to do but clean the carb

current machines
1-toro2450E-38419. 1-toro3000E-38435. 1-toro 3650E-38445
2-toro 521E-38052. 1-toro xl824pt 38086
1-.............,TORO XL 624ps..............
1-............, TORO XL 824ps..............
william
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