Craftsman 179cc bogging down under load when hot - Snowblower Forum : Snow Blower Forums
 
LinkBack Thread Tools
post #1 of 8 Old 01-29-2019, 12:55 PM Thread Starter
Junior Member
 
Join Date: Jan 2019
Posts: 5
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
Craftsman 179cc bogging down under load when hot

Good morning, I have a Craftsman 247.889571 with an OHV Chinese motor that is about 5 years old. It starts easily and runs pretty good right away. However, after a snow storm approx. a week ago I noticed that after it got hot that the RPM's seemed to be higher than normal but it was running okay so I finished up the job. I normally let it idle for a bit while I clean up my steps and then shut it down and clear out any leftover snow. It's stored in my garage when not in use.



Last night we had another snow storm and it exhibited similar behavior once it got hot. However, the issue has gotten worse because it will now bog down and barely throw any snow.



I cleaned the carb and plug but the issue remains. Could this be an issue with the governor or am I off base?


Thanks
Mean90lx is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 01-29-2019, 01:33 PM
Senior Member
 
JLawrence08648's Avatar
 
Join Date: Jan 2017
Location: Lawrenceville NJ
Posts: 2,098
Post Thanks / Like
Thanks (Given): 88
Thanks (Received): 174
Likes (Given): 68
Likes (Received): 403
Garage
It may be running a tad too lean? Is there an adjustment on it? How did you clean the carb? Total disassembly? Spraying carb cleaner in every orifice? Is the choke opening all the way? If it's not, that could make it run faster. How's your fuel? Drain it, carb, tank, and fuel container, in to a clear soda bottle. Governors, once correctly set, never need to be adjusted. The key word is correctly.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale
JLawrence08648 is offline  
post #3 of 8 Old 01-29-2019, 01:34 PM
Senior Member
 
drmerdp's Avatar
 
Join Date: Feb 2014
Location: Northern NJ
Posts: 1,287
Post Thanks / Like
Thanks (Given): 6
Thanks (Received): 141
Likes (Given): 24
Likes (Received): 291
Check your valve clearance. Does your muffler blow flames, or go off like a gun when shut it down from full throttle?

Honda HSS1328AATD | Honda HS720 | Toro Powerlite | Simplicity 860se


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
drmerdp is offline  
post #4 of 8 Old 01-29-2019, 02:09 PM Thread Starter
Junior Member
 
Join Date: Jan 2019
Posts: 5
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
I don't see any adjustment on the carb. I cleaned it by taking it apart and going through all the orifices with a piece of wire and carb cleaner.
The choke moves freely and the fuel is good. I filled up the can recently with non-ethanol gas with stabil.



I have not checked the valves yet. There's no flames that I noticed and it doesn't backfire.



I will check the lash though.
Mean90lx is offline  
post #5 of 8 Old 01-29-2019, 04:55 PM Thread Starter
Junior Member
 
Join Date: Jan 2019
Posts: 5
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
Here's the plug after running it last night. I cleaned it with a wire brush before hand.
Attached Thumbnails
Click image for larger version

Name:	IMG_20190129_155259_1548798868228.jpg
Views:	37
Size:	114.3 KB
ID:	152583  
Mean90lx is offline  
post #6 of 8 Old 01-29-2019, 05:01 PM
Senior Member
 
Join Date: Mar 2015
Location: nova scotia-south shore - ave annual snowfall 199.4 cm ( 78.5 ")
Posts: 2,286
Post Thanks / Like
Thanks (Given): 73
Thanks (Received): 156
Likes (Given): 353
Likes (Received): 582
Garage
looks like time to replace the plug . it may not be the main issue......but its time to replace.

24 " 1967? Ariens Sno thro
28 " Ariens Sno Tek
Toro CCR ss
1966 Gravely LI Walk behind with dog eater

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
nwcove is online now  
post #7 of 8 Old 01-29-2019, 05:29 PM
Senior Member
 
tdipaul's Avatar
 
Join Date: Jul 2015
Location: Central NJ
Posts: 793
Post Thanks / Like
Thanks (Given): 71
Thanks (Received): 68
Likes (Given): 241
Likes (Received): 283
.

Plug looks good, not lean.

look under the shroud and check for a nest. It could be overheating

if good there drain all fuel and start over.

.

1979 Toro 5/24 38040 (now a 6.5/24)
1983 Craftsman FF20 plow tractor
tdipaul is offline  
post #8 of 8 Old 01-29-2019, 06:54 PM Thread Starter
Junior Member
 
Join Date: Jan 2019
Posts: 5
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
No nests or other debris. I had all the covers off when I pulled the carb off last night.

I adjusted the valves and let it run for about 25 minutes tonight. It seems to be better when I tested it. With the bitter cold I didn't want to stay out there very long.

It's always had a little surge since new and that is still present at this time. I read about a member here that is making an adjustable needle for these predator motors. I'm going to order one and see how that works.
Mean90lx is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Snowblower Forum : Snow Blower Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome