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Harbor Freight....79cc - wont start.....

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banjoman09 New Member Total Posts : 1 Scores: 0 Reward points: 0 Joined: 2018/07/18 13:49:44 Status: offline 2018/07/18 13:59:33 (permalink) 0 Harbor Freight....79cc - wont start..... Hi guys- new here so I hope this is a good forum. I have work on engines for ever but this one has stumped me! Motor is one yr old on tiller; I was tilling last week and it just stopped running- like you turn key off. It had weak spark so I replaced the coil assembly- set the air gap- now has hot spark. Still doesn't run. Pulled the plug and seems like no compression- I put a gauge in hole and only shows 5lbs of compression; pulled valve cover and all is working- up and down; set valve lash at .10 and .15; still no run and no compression- anyone ever hear of this? Thanks. Quote #1 1 Reply Related Threads
B53 Junior Member Total Posts : 18 Scores: 0 Reward points: 0 Joined: 2018/11/19 23:50:44 Location: SE USA Status: offline Re: Harbor Freight....79cc - wont start..... 2018/11/21 21:37:05 (permalink) 0 Valve lash settings you posted, can't be .10 & .15 that is between 1/8 of an INCH. Did you mean .010 & .015, more likely, but those settings seem way too loose as well. What does your manual state for specs ? Quote #2

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banjoman09

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Total Posts : 1
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Joined: 2018/07/18 13:49:44
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2018/07/18 13:59:33 (permalink)

Harbor Freight....79cc - wont start.....

Hi guys- new here so I hope this is a good forum. I have work on engines for ever but this one has stumped me! Motor is one yr old on tiller; I was tilling last week and it just stopped running- like you turn key off. It had weak spark so I replaced the coil assembly- set the air gap- now has hot spark. Still doesn't run. Pulled the plug and seems like no compression- I put a gauge in hole and only shows 5lbs of compression; pulled valve cover and all is working- up and down; set valve lash at .10 and .15; still no run and no compression- anyone ever hear of this? Thanks.

Quote #1

1 Reply Related Threads

B53

Junior Member

Total Posts : 18
Scores: 0
Reward points: 0
Joined: 2018/11/19 23:50:44
Location: SE USA
Status: offline

Re: Harbor Freight....79cc - wont start..... 2018/11/21 21:37:05 (permalink)

Valve lash settings you posted, can't be .10 & .15 that is between 1/8 of an INCH.

Did you mean .010 & .015, more likely, but those settings seem way too loose as well. What does your manual state for specs ?

Quote #2

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