87 125 No spark and now turning slow and hot starter

dsiegrist91

Cadet
Joined
Aug 8, 2017
Messages
10
I was out on Saturday for the first time of the season (was injured and already getting a late start to the season) When my 1986 force 125 lost spark after stopping for lunch at a local marina. I came out after about a hour and a half and had a dead battery (new replaced this winter) so i got out the jump pack and found i have no spark. I have disabled the kill switch and been out since so i dont believe thats the issue. now as im diagnosing it with a new battery, that i picked up today. the starter is turning slow and getting hot. i have sanded and cleaned the battery cables. i put a battery selector switch on this winter but only have one battery connected so i could turn the power off when not in use. in my diagnosing i disconnected that since it was my first time out this season with it installed. If anyone could give some advise on what to check next i would really appreciate it. i also have a 92 70hp force that i pulled ff the boat that i might be able to rob parts off of.

model and serial of 125
m# 1254x7a
S# 1307
 
Last edited:

Nordin

Commander
Joined
Jun 12, 2010
Messages
2,621
Sounds like you have a bad starter solenoid or a bad starter.
Try to jump the solenoid and put batteri voltage direct to the starter plus terminal.

If the starter turns with a normal speed, then the solenoid is bad.
If not and the starter turns slowly then you have to take the starter apart and clean it.
Clean the commutator, check the brushers and even the bushings for the rotor.
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
18,116
The no spark: outboardignitiondotcom has procedures for testing.
​Top few posts in this forum has tips on troubleshooting.
Read these.
​Make sure the flywheel key hasn't slipped.
Check for soft spots on the battery cables.
Check the grounds/connections on the block.
 

dsiegrist91

Cadet
Joined
Aug 8, 2017
Messages
10
So i got the motor spinning at full speed by replacing starter and solenoid. still no spark i knew that wasnt the only issue i also replace rectifier. still no spark when i ohm out the stator i get 1.0 on the leads coming from the rectifier. and when i check between the bules any yellow get like 24.0 ohms with key in on position when cranking gose to open line i need to replace stator correct my manual say it should read between 600- 900 but dise not say weather it should be cranking the other side is in line accorind to manual
 
Top