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D7 3T pony motor not starting

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11 months 1 day ago #248152 by gauntjoh
I don’t have that information off the top of my head but it will be in the D7 serviceman’s reference manual in the members library. Membership costs just 40$us.

John Gaunt, ACMOC Director, UK
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11 months 1 day ago #248153 by V14
Replied by V14 on topic D7 3T pony motor not starting
I have a physical copy of the manual, I will check in there again don't remember seeing it.
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11 months 14 hours ago #248163 by Rome K/G
Till the engine runs smooth without omitting black smoke.
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11 months 12 hours ago #248164 by V14
Replied by V14 on topic D7 3T pony motor not starting
Found it in the operating manual, was looking in the serviceman manual before. My jets were way off the initial recommended so that is probably the issue.

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11 months 2 hours ago #248171 by ctsnowfighter
Just an old rule of thumb that seemed to work wonders on many machines, 1 1/2 turns out, adjust from there as necessary.
One thing that probably did more harm than anything, CRANKING THEM DOWN AGAINST THE SEATS!

Float levels are critical, stuck needle or leaking needle and seat can really make you use language not appropriate for even mature audiances!

Full flow from the tank to the the float bowl --- not a trickle, dirp but a full flow --- makes it much easier on all aspects.
CTS
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10 months 4 weeks ago #248178 by trainzkid88
yep 1 1/2turns even on small 2 strokes it works well. yes use thumb and fingertip pressure to adjust the screw till it just touches the seat and them back em out.
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10 months 4 weeks ago #248184 by V14
Replied by V14 on topic D7 3T pony motor not starting
I will give it a shot, also got some new spark plugs just in case but doubt that is the issue.
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10 months 4 weeks ago #248187 by Ray54
Replied by Ray54 on topic D7 3T pony motor not starting
Not knowing how far you hauled it to get the D7 home, many mags give better spark cold , start much harder warm. Try to keep track of what you do ever time. Because it is very likely to respond well the next time if you do the same as worked last time. As CTS gave you the standard procedure, you now need find the happy place of your pony motor. Such as how many cranks before turning the choke off. Or maybe only 1/2 choke, each has what it likes, you just need to find it.


But always remember if you have a trucker coming to move it, if you don't get it started and running a hour early it will pick this time to give trouble. Or it has started perfectly every time you try for a year, you get people standing around watching it will give trouble. Just the nature of pony motors some how they know.
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10 months 4 weeks ago #248188 by V14
Replied by V14 on topic D7 3T pony motor not starting
It was about 3 hours away in near identical weather. However I wasn't there for load and the driver said it was already running when he showed up so they could have had trouble with the pony and pull started it for all I know previous owner didn't answer my call when I tried to ask.

Luckily the driver has another semi and lowboy and is fine keeping it on there and letting me mess with it at his place. He is only 30 minutes away. If i cant get it started we can pull start there and leave it running on the trailer for the drive (would be less than ideal not being able to monitor oil etc). He also happens to be doing a job up the road from me and has his dozer and excavator there. If I haven't got it set by time that job is complete later this week He said he can just pull it off with one of his machines but getting it started is certainly the best option.
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10 months 4 weeks ago #248194 by PhilC
Replied by PhilC on topic D7 3T pony motor not starting

 leave it running on the trailer for the drive (would be less than ideal not being able to monitor oil etc).
 

Been there and done that with our D8. Starter motor on the pilot died when getting it ready for transport so we towed it to get it going and parked it on the trailer and left it running. 45 minute trip but not much choice. At least with the 15A D8's it's almost impossible to stall them. Stalling the engine half way through loading with no way to restart is a bigger problem.

944A - Machine SN 43A2589 Engine SN 90A284
955K- Machine SN 71J3772 Engine SN 83Z0704
D6 SN's 4R732sp, 5R2724, 5R4832
D8 SN's 15A1254, 15A2287, 15A2723

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