Questions & Answers for: yamaha 2 stroke outboard maintenance

outboard 115 yamaha misfiring at low revs misfiring at low revs and ok at high revs Unscrew the 4 idle mixture screws 1/2 turn 1 at the time till sneezing stops... Clean your carburettors

Yamaha 250vx cards outboard lost rpm wont go above 4200 rpm clean and balance carbs , compressions all above 100psi ? sparks on all cyls ?

I have 2 x 50 hp Yamaha 2 stroke outboards which now are about 15 klm p/h slower since having a service, what could cause this spark plug cold

2002 yamaha 150 outboard wont shut off with key Broken wire in loom,white wire,bad connection in loom plug,if it switches off with kill switch,then it points to ign switch

...two yamaha 115 hp outboard one engine suddenly become power less than the other one gave me 5 the other 4.5 what is the problem more info needed but it sounds like fuel,maybe water like ...

...yamaha goes up but wont come down 4 stroke 2006 have a feeling the mac tried the battery reversed polarity not sure shows both blue and green live at relay ???? engine no 6c2l1005914 Reverse polarity ...

have a 115 2 stroke Yamaha runs great at 3500 rpm's but when I kick it up it gets hot and shuts down Replace the impeller, should be done every couple of years.

...stroke Yamaha f9.9sf code 669 ser3# 006042. I NEED THE YEAR OF THE MOTOR SO I CAN BUY THE SERVICE MANUEL FOR IT. CAN YOR HELP ME. THANK YOU , TED THIS IS FOR A OUTBOARD MOTOR ...

I have a yamaha 9.9 4 stroke 6G9 F9-9MLHT 306962 Y that runs but will not idle properly.I also have CR6HS NGK-R spark plugs that I need to gap. gap at .032" - .035" max

Mariner 9.9 outboard 2 stroke owners manual free download? do and online search and include year --