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Old 16 June 2015, 06:18   #1
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Country: UK - Wales
Town: Bangor North Wales
Make: Avon Sr4M
Length: 4m +
Engine: Outboard 40hp
Join Date: Jul 2013
Posts: 27
Which thrust washer?

Having had a 40hp mariner 6e9 on the back of the searider, the time came to retire the well worked engine, purchase an electric start version and keep the original for spares.
I've currently got the old gearbox on the replacement engine as I'm changing all the seals before refitting but when test fitting the prop I've come across a frustrating problem.
The original engine is a ' 6e9 40m S' serial no. 018158. With the prop removed, this is how the shaft looks -



with the thrustwasher fitted and prop installed its a perfect fit in casing -



And here comes the issue, the replacement engine is again a 6e9, this time a ' L 40ELTO91' with a serial no of 503572. With the prop removed the shaft is different as it gets nearer the casing -



and with the same thrust washer results in this-



From my little understanding, the exhaust gases being able to leak from the sides will cause me problems. Having done a lot of searching on locating a different thrust washer to solve the problem and found nothing, I'm hoping that someone can point me in the right direction?
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Old 16 June 2015, 06:45   #2
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Country: UK - Scotland
Town: wormit
Boat name: lots of them
Make: various
Length: no boat
Engine: all types
Join Date: Dec 2004
Posts: 388
Somebody has run it without an inside thrust washer and your propeller has ate your gearbox case and the outside oil seal. Swap the gearboxes.
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Old 17 June 2015, 08:31   #3
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Country: UK - Wales
Town: Bangor North Wales
Make: Avon Sr4M
Length: 4m +
Engine: Outboard 40hp
Join Date: Jul 2013
Posts: 27
Ah well, more spares I guess. Cheers.
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