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Forum: Auxiliary Equipment & Dinghy

07-11-2014, 04:10

Replies: 41

5 HP Yamaha won't stay running

Views: 10,427

Posted By a64pilot

Re: 5 HP Yamaha won't stay running

On the pump, it's most likely a diaphragm pump that uses the pulsations of crankcase pressure to pulsate the diaphragm which then pumps fuel. failure mode is usually the diaphragm tears, but there is...

Forum: Auxiliary Equipment & Dinghy

07-11-2014, 04:07

Replies: 41

5 HP Yamaha won't stay running

Views: 10,427

Posted By a64pilot

Re: 5 HP Yamaha won't stay running

You can pretty much confirm or eliminate a fuel pump by keeping the bulb full by keeping it pumped up, not a whole lot of pressure, but enough to keep the bulb firm.
You can also get home in the...

Forum: Auxiliary Equipment & Dinghy

03-11-2014, 11:41

Replies: 41

5 HP Yamaha won't stay running

Views: 10,427

Posted By a64pilot

Re: 5 HP Yamaha won't stay running

Some engines I believe the kill switch completes the circuit, that is remove it and you will get no spark, the kill switch functions by opening the circuit, not grounding it, find out which yours is.

Forum: Auxiliary Equipment & Dinghy

03-11-2014, 08:52

Replies: 41

5 HP Yamaha won't stay running

Views: 10,427

Posted By a64pilot

Re: 5 HP Yamaha won't stay running

That has caused me an inordinate amount of grief in times past when as kid I used to race Hare Scrambles, I just knew it couldn't be the plug, it fired when removed.

Forum: Auxiliary Equipment & Dinghy

03-11-2014, 05:25

Replies: 41

5 HP Yamaha won't stay running

Views: 10,427

Posted By a64pilot

Re: 5 HP Yamaha won't stay running

More times than I can count I've fouled a two stroke plug, cheap as they are just replace it, but easiest way to check for spark is remove the plug put it in the wire and lay it on the engine and...

Showing results 1 to 5 of 5

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