TIMOTHY McCLELLAN 12 #1 Posted May 4, 2016 I Have a WH 310-8 THAT WONT START WITH THE KEY.I TURN THE KEY AND THE VOLT METER DROPS TO ZERO. I TURN KEY ON JUMP ACROSS SILINODE AND IT STARTS RITE UP. ANY IDEAS? Share this post Link to post Share on other sites
pfrederi 17,043 #2 Posted May 4, 2016 310-8's were made for 5 years during which time the engine was changed from a K series to a Magnum series. Different wiring/igniton. What is your model number. (something like 21-10K801 on a label on front edge of rear fender cover in front of the seat. Also should probably post this in electrical or engine section. Share this post Link to post Share on other sites
Phatboy 565 #3 Posted May 4, 2016 I had same problem with my 310-8 and the solution was,, if you are sitting on the tractor on the right side of the battery you will see a relay with about 4 wires on it,, the brown wire had broke off,, so i put a new connector on it and waa laa !! Worked like a champ.. Then for a piece of mind i re- did the other connections also ,,, bit mine did the exact same thing,, check that brown wire.. Share this post Link to post Share on other sites
skrusins 128 #4 Posted May 4, 2016 Bad ground somewhere could be a wire or the solenoid doesn't have a good ground. Share this post Link to post Share on other sites
popcat 10 #5 Posted May 5, 2016 The one I bought has a brand new solenoid on it. May have been a similar problem with it. Also noticed there is a couple of fuses that might be worth a check or a safety switch. Just a few thoughts that may help. Share this post Link to post Share on other sites
pfrederi 17,043 #6 Posted May 5, 2016 Problem here we do not know if his 310-8 has K series with Battery /coil ignition and a 3 amp unregulated charging system or a Magnum with a magneto and maybe a real regulated charging system. Big difference in wiriing layout/colors. Share this post Link to post Share on other sites
TIMOTHY McCLELLAN 12 #7 Posted May 6, 2016 On 5/4/2016 at 1:17 PM, pfrederi said: 310-8's were made for 5 years during which time the engine was changed from a K series to a Magnum series. Different wiring/igniton. What is your model number. (something like 21-10K801 on a label on front edge of rear fender cover in front of the seat. Also should probably post this in electrical or engine section. 3110k801-12149 Share this post Link to post Share on other sites