crank seal

[zippinaround]

hello all been a while since i logged in here and cant find the thread im looking for maybe someone can help out? i think my crank seal has either popped out or blown but is a relatively new engine so i think it just popped out from trying to start when flooded

 

[crassius]

if it looks good all the way around, I'd just pop it back in & try it

 

[zippinaround]

Whats the best way to stop the engine from turning to loosen that screw to get the small gear off for a proper look

 

[crassius]

place a 4.5mm allen wrench thru chain links just next to sprocket

 

[zippinaround]

will try later this evening thanks crassius

 

[Greg58]

I've used a wedge of wood between the gears, if you have the flat head screw use a large blade screw driver or impact driver to loosen.

 

[HeadSmess]

its usually the one under the magneto that goes. its only a few mm thick, and neither has proper lips anyways. best to replace both with a "2RS" type... ie, fish it out, take it to a bearing shop. i vaguely recall 28x17 as the size.

lump of wood in the gears.

rope in the plug hole.

brass/copper/timber in the ex port(really rough)

jam the chain on the sprocket.

wind a loose length of chain round the sprocket.

stick a round object between case and sprocket...

plenty of ways to skin a cat!

 

[zippinaround]

Its not the magneto side its the gears side , i briefly tried allen wrench in chain ,broke my chain haha lump of wood in gears just chewed it through , will try some of your options later headsmess thanks

 

[Greg58]

A impact screw driver is a great tool to have, I've used one for years on motorcycles. I bought one last summer from harbor freight. The wood wedge works great with it.

http://www.harborfreight.com/impact-screwdriver-set-with-case-37530.html

 

[HeadSmess]

my preferred seal

http://www.ebay.com.au/itm/15x27x7m...497439?hash=item1eac2aaf5f:g:OtkAAOSwkNZUfyoo

though i recall getting a ten pack for half that price!