This message is a reply to an archived post by Michael Donegan on September 30, 2011 at 17:13:05.
The original subject was "carb air intake on 310320 picture".

Joe(Wa)- You mount the solenoid on a steel bracket near the fuel tank. Can you share why you place it there and how the wiring harness is routed? I am currently having a consistent problem with my 310 not always turning over with the solenoid mounted on the starter. Thanks for all your advice in this forum.

The 300 gas engine tractors that I have seen the solenoid is mounted on a bracket with a cable from the solenoid to the starter post as mine is and in the lower 6v pos gnd pic.

The the diesel was 12v pos gnd with the solenoid mounted on a bracket attached to the starter post using the bracket as a conductor.

The second pic is a 400B 12v pos gnd same as 300B gas engine. I think the wiring is the same for the 300, 300B, 400B gas except lights not sure though.

I converted this 310 & a 311B to 10si 12v neg gnd 3 wire alternator, 4 terminal starter switch, 12v gas & temp gauges w/senders, lights, coil and generic solenoid. I didn"t pay much attention to the original wiring as both were a rats nest, not complete or functioning except to start/run the engine directly off the battery so mine are not wired as original.

Joe

Joe-Thanks very much for your reply. I since had my starter guy replace the solenoid and it turns over now fairly reliably. However the fuel system is very "touchy" now after rebuilding the Zenith carb and throttle linkage, which seems bass ackwards. When you push the hand throttle towards the front of the tractor it slows which seems counter intuitive?? Have replaced the plugs, coil (no resistor)and checked all wiring. Now it just cranks and no run. Coughs up a black smoke "hair ball" occasionally but will not run??!!Any suggestions?

Joe-Found the problem. If you swap the 2&3 plug wires not only will it not run well it won't run at all!! Dumb mistake on my part. Runs like a top now. Thanks for all your help.-DZ