Skwerl58 746 #1 Posted September 22, 2023 The starter bendix on my 87 414-8 had been getting loud so I tried to clean it and use dry lube to improve it while it was still on the motor. I sprayed brake clean up to the corner from the cover and also a blast from the top of the starter. After a bit I shot some dry lube from the top to the bendix and now it is blowing fuses when I turn the key. I am going to give it a day or so before I get back on it. I will remove it if it does not start and check it but just curious what I may have messed up?? 1 Share this post Link to post Share on other sites
lynnmor 7,559 #2 Posted September 22, 2023 Make sure that the positive battery cable has a good connection at each end and it is in good condition. 2 Share this post Link to post Share on other sites
squonk 42,522 #3 Posted September 22, 2023 Wiring diagram of the starter motor circuit. The fuse is after the power feed to the starter itself. Check your safety switches for dirt/grass shorting across terminals ect. Share this post Link to post Share on other sites
953 nut 57,885 #4 Posted September 23, 2023 (edited) 20 hours ago, Skwerl58 said: The starter bendix on my 87 414-8 had been getting loud so I tried to clean it and use dry lube to improve it while it was still on the motor. I sprayed brake clean up to the corner from the cover and also a blast from the top of the starter . If the bendix is making loud noises it probably needs to be replaced. Why did you use Brake Clean? Brake cleaner can be harmful to plastic, rubber, electronics, and painted parts. It turns out some of these components can be dissolved by brake cleaner so it should only be used on brake components or other bare metal components you're looking to clean. After a bit I shot some dry lube from the top to the bendix and now it is blowing fuses when I turn the key. Is the fuse blowing when in the ON position or only in the START position? As you can see on the drawing Mike supplied there is no fuse in the starter circuit. What components did the brake cleaner get onto other than the bendix? Is the 25 amp fuse the one that is blowing? When a fuse blows it is likely that a component or wire being protected by the fuse is shorted out to ground.. You may have melted the insulation on a wire near the starter, need to inspect all of the wires that may have been sprayed. Edited September 23, 2023 by 953 nut fat finger 1 Share this post Link to post Share on other sites
squonk 42,522 #5 Posted September 23, 2023 If the 25 Amp fuse is blowing, Check the wires and components highlighted in red. Share this post Link to post Share on other sites
Skwerl58 746 #6 Posted September 23, 2023 I checked the wires for damage today near the starter and none were damaged and connections are tight. The fuse was a 15 instead of 25 amp and blowing them but the starter at least grunts before blowing them. I cleaned some connections near the starter and followed the wires from the solenoid and starter and they were tight and look good. Will get back on it Monday, remove the battery for better tracking and will probably take the starter off and check it out. This is my worker and I use it weekly so need to get it going. What replacement starter or rebuild kit do yall recommend? 1 Share this post Link to post Share on other sites
squonk 42,522 #7 Posted September 23, 2023 The starter is not blowing your fuse. It still may be bad, but you need to find the cause of the higher than normal amp draw on the control circuit I highlighted. There could be a problem with the safety switches themselves (if they are even in the circuit anymore) or the solenoid 2 Share this post Link to post Share on other sites
lynnmor 7,559 #8 Posted September 23, 2023 3 hours ago, squonk said: The starter is not blowing your fuse. It still may be bad, but you need to find the cause of the higher than normal amp draw on the control circuit I highlighted. There could be a problem with the safety switches themselves (if they are even in the circuit anymore) or the solenoid Since it is the 15 amp fuse, you need to add that 15 amp circuit to the above wiring diagram. If the 15 amp circuit is pulling high amps perhaps the battery cable isn’t carrying the full starter load then some of it might be loading the 15 amp circuit. Checking the tightness of a connection is not enough, the connection should be disassembled and cleaned. 1 Share this post Link to post Share on other sites
Skwerl58 746 #9 Posted September 25, 2023 Got on the tractor wiring this morning and started at the ignition switch. Cleaned connections and checked for scouring and frayed wires. I checked all wires to the tail lights and to the flywheel cover. Connectors were dirty and and I replaced one wire end on the solenoid. Cleaned all the major ground and positive ends and also sanded the grounding areas. Rerouted some wires into a couple of wire covers. I replaced the positive battery cable with a new one and checked the fuse holder for voltage and it was 12.8 in the start position. Added a 25 amp fuse and it fired up with no issues. Thanks for all the info ! 1 1 Share this post Link to post Share on other sites
