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08 November 2010, 23:48
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#1
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Member
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 70hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,650
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Bolt left over!
Recently had to remove the trim motor of my Tohatsu 2-stroke 60hp to rebuild it. I also removed the thermostat (needed a new gasket), the electric box cover (where solenoids are located), the PTT wiring harness, etc. Everything that came off I placed in one location in the garage on a bit of wood. I was meticulous in doing this. Only trouble is, I have a bolt left over after it's been put back together! 99.9% sure it's related to the engine and not something from another project. The bolt is an 8mm-fit allen-head with washer, alloy, not stainless-steel.
From what I can tell the very small writing on it says H S K (above) and A 2 - 7 0. Bu**ered if I know where it goes? It didn't seem to hold anything on (which begs the question) "why did I remove it?"
Anyone with a Twatsoo out there (mid-sized 2-stroke) - can you please have a quick scan at your engine and help me out. I've posted a picture for reference.
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08 November 2010, 23:55
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#2
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Member
Country: UK - Channel Islands
Town: jersey
Boat name: Martini II
Make: Arctic 28/FC470
Length: 8m +
Engine: twin 225Opti/50hp 2t
MMSI: 235067688
Join Date: Jun 2005
Posts: 3,030
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A2-70 means it's made of 304 stainless, 700N/mm sq.
Not that this'll help you any
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09 November 2010, 00:14
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#3
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Member
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 70hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,650
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Quote:
Originally Posted by martini
A2-70 means it's made of 304 stainless, 700N/mm sq.
Not that this'll help you any
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Cheers martini. 304 stainless certainly seems to link it to the engine. The plot thickens!
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09 November 2010, 09:24
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#4
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Member
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,671
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Just a stab in the dark here, but I have very similar screws holding my PT motor onto the "manifold" below.
M8 is going to be holding something big - ish on.
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09 November 2010, 09:52
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#5
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Member
Country: UK - Wales
Town: Here
Boat name: doggypaddle
Make: Avon 5.4 Searider
Length: 5m +
Engine: yamaha 80
Join Date: Jul 2007
Posts: 1,107
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Quote:
Originally Posted by 9D280
Just a stab in the dark here, but I have very similar screws holding my PT motor onto the "manifold" below.
M8 is going to be holding something big - ish on.
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something you might notice when it falls in the briney
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I am usually not as green as i am cabbage looking.
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09 November 2010, 10:19
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#6
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Member
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 70hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,650
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Quote:
Originally Posted by 9D280
Just a stab in the dark here, but I have very similar screws holding my PT motor onto the "manifold" below.
M8 is going to be holding something big - ish on.
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Cheers 9D280. Any chance of a picture?
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09 November 2010, 14:39
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#7
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Member
Country: UK - Scotland
Town: Glasgow
Boat name: stramash
Make: Tornado
Length: 5m +
Engine: Etec 90
Join Date: Feb 2006
Posts: 5,090
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Just to keep my fitters on the ball it has been not unknown for me to chuck in a spare bolt into their magnetic tray whilst they were busy on a project ... in fairness .. I always owned up to it
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09 November 2010, 16:02
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#8
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Member
Country: UK - Channel Islands
Town: jersey
Boat name: Martini II
Make: Arctic 28/FC470
Length: 8m +
Engine: twin 225Opti/50hp 2t
MMSI: 235067688
Join Date: Jun 2005
Posts: 3,030
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Obvious I know but are you sure it's not one of the bolts that connect the trim motor to the trim pump? May be hidden round the other side up against the saddle?
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09 November 2010, 16:14
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#9
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Member
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,671
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Quote:
Originally Posted by spartacus
Cheers 9D280. Any chance of a picture?
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No pics to hand, but have a look at this:
http://www.ishopmarine.com/ishop/jsp...=&eCatSupFldr=
Item 12
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09 November 2010, 22:28
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#10
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Member
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 70hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,650
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Quote:
Originally Posted by martini
Obvious I know but are you sure it's not one of the bolts that connect the trim motor to the trim pump? May be hidden round the other side up against the saddle?
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The trim motor housing didn't have to be fully removed from the pump. The motor was held in place with 4 x cross-head 10mm bolts, rubber 'o' rings, etc. Undo these - and the motor housing can be extracted. I'll have another look though - to see if there's anything obvious.
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09 November 2010, 22:33
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#11
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Member
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 70hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,650
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Quote:
Originally Posted by 9D280
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Thanks. I sourced this from a Tohatsu mechanic. Can't see the bolt in question though.
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10 November 2010, 09:13
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#12
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Member
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,671
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Did you remove the biog casti g form between the transom clamps? M8 strikes me as the sort of size you might find doing that, or possibly holding an anode on?
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10 November 2010, 23:51
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#13
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Member
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 70hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,650
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Quote:
Originally Posted by 9D280
Did you remove the biog casti g form between the transom clamps? M8 strikes me as the sort of size you might find doing that, or possibly holding an anode on?
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No. Didn't remove anode, or anything between transom clamps. Got to be a bolt from something else that's found it's way into the parts I removed. There's no other allen-head bolts on the engine that I'm aware of. Downhilldai may be able to confirm - he's got the same engine.
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11 November 2010, 00:06
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#14
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,299
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Quote:
Originally Posted by spartacus
Downhilldai may be able to confirm - he's got the same engine.
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Sorry, I don't have it any longer.
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11 November 2010, 08:55
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#15
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Member
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 70hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 4,650
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Quote:
Originally Posted by Downhilldai
Sorry, I don't have it any longer.
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Well there goes my biggest source of information, second only to Tohatsu Corporation! Cheers anyway.
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