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Riot Pull start Problem

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Trevor Monahan View Drop Down
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    Posted: 28 January 2011 at 4:47pm
Riot 2 with R18 engine with pull start.

I was getting engine started as per manual. It would start and run a few
seconds then cut out.

Following last attempt the pull start seems to freewheel. Not engaging
with engine.

I took glow plug out and turned engine over with gear cog, I would see
piston rising. It got to top but does not go down, turning cog back or
forward makes no difference.
Any ideas please.
TM
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Anthoop View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Anthoop Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2011 at 10:53pm

Is it new or old?

Pullstarts use a one way bearing and if the bearing is worn/broken/sheetbound it will not grip the crankshaft in that one direction.

If you are rotating the flywheel whilst looking down the plug hole and nothing is moving, then it is a broken rod/crankpin.

 

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Trevor Monahan View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Trevor Monahan Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2011 at 11:05pm
It's new only run in. When look down on piston and turned gear could
see piston rising to top then nothing. No movement of piston when
gear turned back or forward. Loosened pull start blasted air down to
remove any crap. Could not get it off as requires lots of dismantling
wanted to get responses in case something easier. Thanks for reply
tm
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Trevor Monahan View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Trevor Monahan Quote  Post ReplyReply Direct Link To This Post Posted: 03 February 2011 at 3:30pm
I've just cleaned bearing in pure alcohol to get rid of grease, oil etc. but no
difference. Looks like new one if no more suggestions.
TM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 11 February 2011 at 2:47am

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