Jump to content

2019 Coleman 550 700-7 code at startup

Recommended Posts

I’m getting a 700-7 every startup. I’m having to change the plug every 100 miles on 93 octane gas. I got a lower numbered plug that is supposed to burn hotter. I’m wondering why that comes up every time I start it and if it’s related? I included a picture of the code or whatever it is. I haven’t seen the code in the owners manual or the hisun shop manual I have. 


Link to comment
Share on other sites

  • 2 weeks later...

That's not a code, that's the model... HS700-revision 7

The million dollar question is why does yours think its a 700cc? you sure its a 550?

These things are rougher on plugs than a normal vehicle, just like most small engines. Have you checked the valve clearances? Have you noticed the higher heat range plug resisting fouling any better? Do you have too much oil in the crankcase? You shouldn't need 93 octane.

Link to comment
Share on other sites

I know that I shouldn’t need 93 octane because I read what type of gasoline to put in it in the hisun maintenance manual. I appreciate the answer about the numbers I’m seeing at start up. I’m assuming it’s a 550 because 4 people and a 15 miles trip may have cracked a head. The plug in for the temperature sensor was siliconed when I purchased it & it never showed that it was hot but there is definitely too much liquid in the oil. Milky over full & wouldn’t burn when changed. I changed it & my daughter drove it a few miles & it was milky again and barely over full. The number I think on the plug is an 8 I installed a 7 but I haven’t been running it due to cracked head or head gasket. Thanx I thought those numbers meant I needed a new computer. 700 means my display or computer might have come from a 700. What does -7 mean? I might adjust the idle but it is close to correct. It will almost idle now on 93 octane and I didn’t think it had enough grounds so I added a couple & I can tell it is almost idling like you’d want. The only reason I added grounds is because we bought it & it wouldn’t start due to mice chewing on the wiring harness. I paid to have it fixed. It would have probably been cheaper to get a new harness but the guy that said he could fix it didn’t do it right. So I’ve been working on it here in my 40 x 60 metal building. I’m just about to pull it back in and start taking it apart to replace the head(or less likely with my luck the head gasket) and temp sensor that screws into the top of the engine.

Link to comment
Share on other sites

  • 3 weeks later...

U r probably right now that I think about it. My father bought it at a discount at tractor supply. It wouldn’t start and I think mice had been chewing on the wires. Maybe they changed the display if it wouldn’t work after some chewing?  It also had a damaged connector at the temp sensor going in the engine or I wouldn’t have cracked a head. I’m assuming it’s cracked with the oil full of coolant I think def full(milky & doesn’t burn when it comes out). I found silicone on the connector and I never got it over 2 notches on the display. I was wondering how I cracked a head with no over heating and i remembered I didn’t get both sides of the damaged connector and forgot about it. That’s how I f’d it up

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Topics

    • By malenurse13
      We just bought a used 2017 American Landmaster TW450. No hour meter that I can find, so not sure exactly how much it has been used. 
      The first 2 days we had it, the starter was a little sketchy, but it started after 2-3 tries. Sometimes when turning the key, we would hear a loud metal "clink" sound. Like the starter made contact, but didn't have enough power to turn. 
      THIS MORNING... Turning the key, we hear a single click sound. That's it. Even with a new battery, the starter is still doing the same thing. Both batteries (old and new) were reading 12.8 volts on volt meter. So I'm wondering what else could be going on? Any ideas on what to look for would be greatly appreciated...
      Thank you!
    • By nods
      Less than 40 miles can barely start. Dealer is working with Hisun on a number of other issues on this UTV. Can not get clear info on the meaning of these E codes this is getting. Anybody have some clear info for me?
    • By DJ Brusenski
      checked all the fuses and relays, I can jump start it with the key in the on position. it will not key start need some help, thanks
    • By Dave N.
      2020 Massimo Buck 400 - Won't start. Can hear the starter spinning, but motor never turns. Relay? Starter? Worked fine one day and not the next. Thanks for any help you can provide.
    • By Coleman400
      Hey all. I need to change my plug in my ut400 and I remember seeing people in here saying to get a certain one that was better than what it came with. What was it?
      Also I need to do an oil change. Are the tractor supply oil change kits ok to use?
      Any help here is appreciated!
  • Create New...