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Old 06 October 2012, 12:28   #1
lightning's Avatar
Country: UK - England
Town: Marple
Make: Zodiac
Length: under 3m
Engine: Tohatsu 9.8
Join Date: Jun 2009
Posts: 551
Tohatsu 9.8 timing

Can the timing be adjusted on the Tohatsu 9.8 2-stroke engine or is it necessary to check it at the service?
I want to service the engine myself and the timing is the only thing that I cannot do. However it does appear from reading the owner's handbook that on the 9.8hp it's not necessary to check it.
(the handbook covers the 6hp 8hp 9.8hp 2-stroke but also appears to apply to 4-stroke as well, as it says you cannot lay the engine on it's side due to "oil leakage" etc)

But the handbook not very clear about timing of the 9.8 2-stroke.

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Old 06 October 2012, 19:12   #2
Locozodiac's Avatar
Country: Other
Town: Lima-Peru
Boat name: Nautile
Make: Sea Rider Boats
Length: 4m +
Engine: Tohatsu 18 /30 HP
Join Date: Sep 2007
Posts: 1,706
2 strokes 9.8 does not leak oil if layed sideways, 4 strokes does. You must not play with timing as comes factory well adjusted. Unless someone has tampered with the engine and has set out timing specs.

Happy Boating

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Old 15 October 2012, 15:00   #3
SIBer's Avatar
Country: UK - England
Town: South Yorkshire
Boat name: Sold it !
Length: 3m +
Engine: Totallyhotsue 9.8 2S
Join Date: Sep 2011
Posts: 258
Lightning your timing will be fine unless you have put mega hours on your motor.

I'm looking at a DIY service too as the last service was done professionally and I've only run 30 hours since with no problems.
Just looking at gear oil pumps as the squeezie bottles seem to be a faff.
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Old 15 October 2012, 15:18   #4
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willk's Avatar
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 12,149
Originally Posted by SIBer View Post
Just looking at gear oil pumps as the squeezie bottles seem to be a faff.
Hard to beat.

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