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Old 13 September 2012, 15:55   #1
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Engine tilt lock

I have a Tohatsu 9.8 outboard motor on my SIB.
The engine will only start/the tilt is locked in neutral, presumably so you cannot start it with the prop out of the water.
However it's not locked in forward or reverse. In forward there's no problem but in reverse if you apply any throttle at all the engine swings back on it's mount with the thrust.

Is this how it should be?
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Old 13 September 2012, 18:47   #2
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Quote:
Originally Posted by lightning
I have a Tohatsu 9.8 outboard motor on my SIB.
The engine will only start/the tilt is locked in neutral, presumably so you cannot start it with the prop out of the water.
However it's not locked in forward or reverse. In forward there's no problem but in reverse if you apply any throttle at all the engine swings back on it's mount with the thrust.

Is this how it should be?
I blipped my 9.8 tohatsu in reverse on Sat and it kicked up so I presume they are all meant to do that?

I seem to remember that my old Yammy had a manual lock for when you were in reverse. Maybe the tohatsu has the same feature? I haven't looked at mine properly yet
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Old 14 September 2012, 04:50   #3
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Thanks for the information.

I guess it's a case of only reversing at idle speed, not that you'd want to go any faster in reverse I suppose.
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Old 14 September 2012, 08:29   #4
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You have probably just struck the match on the taper to a firey debate, so I may as well start by throwing in my 2p worth:

When I did my Sportsboat course, the instructor emphasised, "Reverse is for going backwards - it's not a brake"!.

I have never locked an engine down (until now - but that's more down to the PT than any change of opinion) and have never failed to be able to manoever with it "unlocked". I also reckoned (rightly or wongly) that if met a submerged object at speed, it may reduce bottom end damage.


Doesn't the tohatsu have a catch that operates when the gear shift is dropped into reverse?
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Old 14 September 2012, 08:49   #5
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Sounds like the reverse lock mechanism needs adjusting so that the motor is free to tilt in fwd & neutral, but locked down in reverse.
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Old 14 September 2012, 09:09   #6
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The locking clamp on this engine is connected to the F/R/N actuating rod on the engine leg and will only lock the engine in forward gear. In neutral it's unlocked (contrary to my original post) and in reverse gear the clamp is moved even further from the locking bar by the shift mechanism.
So...care is needed in reverse. I only revved the engine a little in reverse and it bounced off the clamp about 6 inches at the prop end.
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Old 14 September 2012, 09:42   #7
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Quote:
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The locking clamp on this engine is connected to the F/R/N actuating rod on the engine leg and will only lock the engine in forward gear. In neutral it's unlocked (contrary to my original post) and in reverse gear the clamp is moved even further from the locking bar by the shift mechanism.
So...care is needed in reverse. I only revved the engine a little in reverse and it bounced off the clamp about 6 inches at the prop end.
Something wrong there
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Old 14 September 2012, 10:16   #8
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Is the trim position pin still fitted to the engine?
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Old 14 September 2012, 13:50   #9
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Is the trim position pin still fitted to the engine?
Just what I thought. +1
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Old 14 September 2012, 19:20   #10
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I agree you should be able to lock the motor and leave it locked going between forward neutral and reverse along with starting and shutting the motor down.
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