Yamaha 30hp -4stroke check list?

Ron Noco · 17 July 2015, 21:26

Hi all, I would appreciate advice on what to look out for on a used 2006 Yamaha ... 400-500 hours up on it apparently
What should compression values be?
What other tell tale signs should I look for?

Cheers
Noel

phantom 19 · 18 July 2015, 09:17

Should be fine. Check idle - poor idle usually gummed up slow speed jets. Rusty trim motor.

Mechanicals are never a problem. Common problems on f30/f40 for future reference:

Start relay failure - solenoid just clicks.
Trim tilt relay failure as above.
Trigger sensor failure - engine won't start.
ECU faulty - engine misfires.

All above apart from the trim relay are attributable to being Mercury sourced electrics. The new models are now 100% Yamaha and far more reliable.

Ron Noco · 18 July 2015, 11:19

Good to know :-)

Thanks for the advice

Cheers
Noel

Ron Noco · 18 July 2015, 14:43

Haven't seen the engine yet, but was talking to the seller and he says the starter solenoid needs to be replaced... He's getting it fixed and serviced shortly...
Any need to worry or be concerned ?

Cheers

phantom 19 · 18 July 2015, 18:50

No they always fail as they are a Mercury part. Easy to fit new one two bolts five minutes. Pattern ones are available and are probably more reliable than originals!

Ron Noco · 28 July 2015, 23:01

Looks like I'm now a Yamaha owner, agreed to buy the F30AET, it's a 2004 (69H) first registered in 2006, 3 cylinder carb engine, big ball of a yoke , compared to my Honda 10 :-)

I'd like to fit a tachometer, will one plug in ? And if so recommendations on which one? eBay ? Or genuine only...

Thanks again :-)

Poly · 28 July 2015, 23:17

If this is on remotes I'd expect the wiring loom to include tacho connections as standard. Basically there will be three wires come OUT the throttle lever that you can connect to most standard tachos (probably yellow, green and black). If you have oil pressure and/or temp sensors you might want a yamaha tacho as it probably will have lights for those too.

Ron Noco · 29 July 2015, 00:28

Hi, previous owner sold boat with loom and control cables so I'm gonna have to buy a new ones, not cheap but I haggled the price down to account for this

Good that it'll take a tachometer as I wasn't sure given its age , might try and pick up a Yamaha gauge if I can...

Thanks