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Old 02 October 2011, 15:50   #11
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A bit more info required: The starter turned when you connected it to power (all by itself), or the motor fired up fine with the cable in place?

The first shouldn't happen (the starter motor is solenoid controlled); the second means that you simply aren't getting power to the motor.

jky
Connected it straight too the starter (bypassed the solenoid).
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Old 02 October 2011, 18:31   #12
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Don't wish to hijack this thread, but seemed the logical place to post my question. Returned to RIB this afternoon after a brief stop in Cowes. Went to start motor and just got the beep of the 'in gear' warning. Throttle was positioned in neutral. Played around for a bit (shifting in and out of gear) but no joy. Fortunately friends were also in Cowes and towed us back to Warsash. Am presuming it's the neutral safety switch that's failed. Helpfully, the wiring diagram in the user manual shows that there is such a switch but not where it's located. Before I start stripping the control box, can anyone confirm it is likely to be there or will it be at the motor end of the shift cable? It's an 18hp Tohatsu 4-stroke. Cheers!
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Old 03 October 2011, 03:55   #13
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I know this is a long shot

But it might just be worth checking the dam thing is not still in gear...
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Old 03 October 2011, 03:55   #14
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Before I start stripping the control box, can anyone confirm it is likely to be there or will it be at the motor end of the shift cable? It's an 18hp Tohatsu 4-stroke.Cheers!
On a 2-stroke, the micro-switch is in the throttle control box. I assume a 4-stroke will be exactly the same. Tohatsu sell them as a replacement part 15-20 if memory serves me + 5 minimum shipping charge.
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Old 03 October 2011, 05:43   #15
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Another long shot - have you checked the state of your battery main isolator? Those things are remarkably not resistant to water. I had a pull start moment on my old Suz when the switch packed up. One new switch later & all was good.

I now carry a 3" jumper & the old connector nuts from the old switch in the tool box to allow a fast reconnect in case it happens again)
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Old 03 October 2011, 17:19   #16
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Thanks guys. Definitely not still in gear, and not the battery isolator as still power to the control box (hence beep) and other electrics.

Called RibShop this morning and they also suspect the neutral microswitch. They've ordered one and expect to have it in tomorrow. Cost, just 12, and yes it is fitted in the control box.

All I have to do now is decide whether to fit it myself or let RibShop do it. Apparently it means taking off the main cover and being very careful not to dislodge any of the cams. I'm reasonably DIY savvy but does anyone have any hints or tips before I get the screwdriver out?
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Old 03 October 2011, 17:42   #17
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All I have to do now is decide whether to fit it myself or let RibShop do it. Apparently it means taking off the main cover and being very careful not to dislodge any of the cams. I'm reasonably DIY savvy but does anyone have any hints or tips before I get the screwdriver out?
Straight-forward to replace. Good opportunity to grease the mechanism within the throttle housing anyway. Plunger switch is held in place with a couple of philips screws. Take note of the three connecting wires before hauling anything off.
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Old 03 October 2011, 18:00   #18
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Thanks Spartacus. I'll give it a go (once I get the switch).
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Old 06 October 2011, 04:22   #19
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Also if you can, remove the box from the side of the console & lay it flat before you undo the screws - stops bits of mechanism dropping out when you take the lid off! Not that I have any experience of this scenario ....



Jumping back to the battery switch corrosion, the issue is only seen on high current draw. I'll bore you with ohms law of things in series if you want, but suffice to say the resistive contacts don't nick as much of the overall available voltage when the current is low. E.G. you might hear the choke solenoid go "click" but then try to crank & nothing happens as the starter pulls the best part of 40A. Remember a PT motor can drink a fair amount of juice as well...... Poking it with a multimeter will be at almost zero current.

New neutral switch can't be a bad thing either way.
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Old 07 October 2011, 13:38   #20
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I always take a picture wit the mobile phone of any parts I'm about to take apart , cause someone always comes in and disturbs ya and a minute later forgotton where that wire/part went !!!
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