Mcculloch 4hp no start

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This topic contains 132 replies, has 16 voices, and was last updated by Avatar joesnuffy 1 year, 1 month ago.

Viewing 15 posts - 31 through 45 (of 133 total)
  • john8504
    john8504

    Replies: 139
    Topics: 23
    #74110

    I found a set on eBay new for a Scott Atwater for next to nothing. I think I’m going to try that and order the cap

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74111

    http://johnsoldmercurysite.com/whitepapers/mercotronic/files/assets/downloads/page0157.pdf

    I found this site that gives the ranges for each condenser. I couldn’t find the 7270 but the 7157 was the same range and looks the same

    Mumbles
    Mumbles
    Canada Member - 2 Years
    Replies: 4057
    Topics: 418
    #74126

    Lower right.


    Attachments:

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74157

    Gotcha

    Avatar
    michael
    International Member - 1 Year
    Replies: 48
    Topics: 2
    #74258

    What color is your spark? If blue , good. If yellow, bad condenser

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74413

    So I acquired a Ted Williams that had bred sitting for 2 decades…same motor…and I stole the points and condensor off of it. Points were really clean and condensor seems better. I had no visible spark before and now I have very bright visible spark. I still can’t get it to pop off. I have new points and condensor coming from laings here in a few days. I’m going to try those and cross my fingers.

    Avatar
    joesnuffy

    Replies: 285
    Topics: 20
    #74423

    Someone mentioned it before about the exhaust possibly being restricted. When I was young I was given a moped 2 stroke. I worked and worked on it but it would not start. I had the exhaust pipe off of it and for some reason tried to start it and it started. Turned out the entire exhaust muffler was full of carbon. I hacked sawed it in to two pieces and removed all the carbon then had it brazed back together and it was fixed. Same thing happened to my lawn boy it would not start and the exhaust muffler which is under motor and mowing deck was full of carbon and it to would not start. Neither motor would as you say pop off and both had spark and fuel.

    Since your waiting on points you might consider checking to make sure your exhaust is clear.

    Hope that helps,
    Joe

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74429

    Ok I’ll check it out

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74437

    do you have to pull the lower unit off to do this?

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74440

    Exhaust had a little bit of build up but no restriction

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74506

    I get the new condensor and points in. The points contact area are much larger than original which I guess is a good thing.

    My question is why was I sent a capsule with what looks like grease and a piece of polishing paper?


    Attachments:

    Buccaneer
    Buccaneer
    US Member - 1 Year
    Replies: 2992
    Topics: 835
    #74541

    The grease would be to put a little bit on the points cam.
    Not sure about the paper……. maybe to polish the points?

    Prepare to be boarded!

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74553

    I figured it out once I posted that and then found out the new spark plug I bought is crap compared to the 30 yr plug that came with it. Going to clean up threads and install here shortly and let er rip.

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74554

    I have searched around. Do y’all know what the correct plug is?

    john8504
    john8504

    Replies: 139
    Topics: 23
    #74559

    Bright blue spark, trying priming with anything under the sun that burns and still nothing. It’s spitting out a lot of black from exhaust since I have the lower unit pulled off.

    About to throw this thing across the yard.

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