North Australian FISH FINDER TM forums

My 2010 Yamaha 100 outboard trim motor has developed a intermittent fault. The relays still click when the switch is pushed however no motor noise. If I give the outboard a wobble or some revision reverse it starts to work. Out of the water it will work if I give it a tap with a soft hammer.

Motor has about 260hours and has only been used twice this year

Any ideas where look for a fix?

Hi Sheps. I had a couple replaced under warranty when I had my Yammie. Seems water ingress to the switch is the issue. Fairly common I believe.

Which switch mate? The relays click so I assumed the switches were ok

Bushes on motors?

I'm with tickety

Happened to me at fresh water finniss

Hit the trim motor with a spanner and away she goes

I & O put new bushes in under warranty $11 bucks in parts or something

Good luck!

.

A mate had the same issue, pulled the motor cover off and gave it a clean, still going strong after a few months, keep a close eye on the small springs and magnets if you pull out the rotating assembly.

Hi guys,
Stumbled upon this thread when diagnosing the problem I have with my 115HP Yamaha. Sounds very similar to what has been described.

I've ordered a new trim motor and was planning on replacing the old one. Do you reckon this is the way to go or just to give the old one a clean as mentioned.

How'd you go with yours sheps?

Yammy115 wrote:
How'd you go with yours sheps?

I though it had self healed as it started working like new again however after a fish on Friday it started playing up again so I will pull it apart and check the brushes.

Can anyone point me towards a schematic of the Yamaha trim motor?

Google

Very helpful, thanks.

I couldn't find a schematic so just pulled it apart. Brushes were seized and there was a fair bit of carbon in there. I gave everything a good clean with contact cleaner and gave the armature a rub with 2000grit wet and dry. Seems to now be working ok

Pays to have a go sheps, just saved yourself mega $$$$$$$$$$